Ultrafiltration water purification structure design optimization method and system

Abstract

The application relates to an ultrafiltration water purification structure design optimization method and system, and the method comprises the following steps: establishing a geometric model of an ultrafiltration water purification structure; constructing a physical model based on the geometric model, wherein the physical model is added with a physical model boundary condition; performing mesh division on the geometric model to obtain a mesh-divided geometric model; solving the physical model based on the mesh-divided geometric model to obtain related data of the physical model; and performing data arrangement, display and analysis on the related data of the physical model to evaluate the performance of the ultrafiltration water purification structure. The application can standardize and efficiently provide an optimization direction for an engineer in aspects of a ceramic membrane geometric shape, an arrangement mode and a reasonable working condition setting and the like, and the error is controllable, the cycle is short and the cost is low.

Description

Technical Field

[0001] This application relates to the field of membrane fouling technology, and more specifically, to a method and system for optimizing the structural design of ultrafiltration water purification. Background Technology

[0002] Membrane fouling refers to the irreversible changes in permeate flow rate and separation characteristics of the membrane during membrane filtration, caused by the adsorption and deposition of microparticles, colloidal particles, or large solute molecules on the membrane surface or within the pores due to physicochemical or mechanical interactions with the membrane. Figure 1 As shown.

[0003] Statistics show that for every ton of coal mined, coal mines generate approximately 2 tons of mine water. Direct discharge of large amounts of mine water severely pollutes the surrounding environment, placing immense pressure on the ecological protection of the mining area and wasting water resources. Coal mine wastewater typically contains high levels of suspended solids, organic matter, and heavy metals, and has a high color intensity. Removing suspended solids is one of the key performance indicators in mine water treatment. Ceramic membranes possess significant advantages such as resistance to acid and alkali corrosion, oxidation, organic solvents, and microbial erosion; good thermal stability; high mechanical strength; narrow and uniform pore size; resistance to clogging; and long service life. They are widely used in wastewater treatment in food processing, biopharmaceuticals, lubricant production, cold-rolled steel emulsion wastewater, and oilfield produced water, especially in the treatment of high-turbidity wastewater.

[0004] The design of membrane geometry and arrangement in traditional ultrafiltration water purification structures often requires experimental methods to measure information such as membrane stress, throughput, and filtration effect. The experimental errors are large, the time cycle is long, and the investment cost is high, which greatly limits the applicability of ultrafiltration water purification structures to new filtration requirements. Summary of the Invention

[0005] To overcome at least one deficiency in the prior art, this application provides a method and system for optimizing the structural design of ultrafiltration water purification.

[0006] Firstly, a method for optimizing the structural design of an ultrafiltration water purification system is provided, including:

[0007] A geometric model of the ultrafiltration water purification structure is established. The geometric model includes a rotating membrane part and a fluid part. The fluid part is divided into a rotating flow domain and a non-rotating flow domain. Geometric boundary conditions are added to the geometric model, including the rotation speed and the center of rotation of the geometric model. Material properties are added to the rotating and non-rotating flow domains of the geometric model, and a dynamic mesh is added to the rotating flow domain.

[0008] A physical model is constructed based on a geometric model, and physical model boundary conditions are added to the physical model.

[0009] The geometric model is meshed to obtain the meshed geometric model;

[0010] The physical model is solved based on the geometric model after mesh generation, and the relevant data of the physical model are obtained.

[0011] Data from the physical model is organized, presented, and analyzed to evaluate the structural performance of the ultrafiltration water purification system.

[0012] In one embodiment, the physical model is solved based on the meshed geometric model to obtain relevant data of the physical model, including:

[0013] Set the solution parameters and use a solver to solve the physical model. The solver can be a steady-state solver, a transient solver, or a parameterized solver.

[0014] In one embodiment, the physical model is a flow physical field, a temperature field, a solid mechanical field, a fluid dynamics field, or an electromagnetic field.

[0015] In one embodiment, the physical model is a fluid dynamics field, and the boundary conditions of the physical model include the inlet velocity, the rotational velocity of the rotating domain, and the slip properties of the boundary layer.

[0016] Secondly, an ultrafiltration water purification structural design optimization system is provided, including:

[0017] The geometric model building module is used to build the geometric model of the ultrafiltration water purification structure. The geometric model includes a rotating membrane part and a fluid part. The fluid part is divided into a rotating flow domain and a non-rotating flow domain. Geometric model boundary conditions are added to the geometric model, including the rotation speed and the center of rotation of the geometric model. Material properties are added to the rotating and non-rotating flow domains of the geometric model, and a dynamic mesh is added to the rotating flow domain.

[0018] The physical model building module is used to build physical models based on geometric models. Physical model boundary conditions are added to the physical model.

[0019] The mesh generation module is used to generate a mesh from the geometric model, resulting in a meshed geometric model.

[0020] The solver module is used to solve the physical model based on the meshed geometric model to obtain relevant data of the physical model;

[0021] The analysis module is used to organize, display, and analyze the relevant data from the physical model in order to evaluate the performance of the ultrafiltration water purification structure.

[0022] In one embodiment, the solving module is further configured to:

[0023] Set the solution parameters and use a solver to solve the physical model. The solver can be a steady-state solver, a transient solver, or a parameterized solver.

[0024] In one embodiment, the physical model is a flow physical field, a temperature field, a solid mechanical field, a fluid dynamics field, or an electromagnetic field.

[0025] In one embodiment, the physical model is a flow physical field, and the boundary conditions of the physical model include the inlet velocity, the rotational velocity of the rotating domain, and the slip properties of the boundary layer.

[0026] Thirdly, a computer-readable storage medium is provided, which stores a computer program that, when executed by a processor, implements the aforementioned ultrafiltration water purification structure design optimization method.

[0027] Fourthly, a computer program product is provided, including a computer program / instruction, which, when executed by a processor, implements the aforementioned ultrafiltration water purification structure design optimization method.

[0028] Compared with the prior art, this application has the following advantages: The ultrafiltration water purification structure design optimization method and system of this application can provide engineers with standardized and efficient optimization directions in terms of ceramic membrane geometry, arrangement and reasonable operating conditions, and the error is controllable, the cycle is short and the cost is low. Attached Figure Description

[0029] This application can be better understood by referring to the description given below in conjunction with the accompanying drawings, which, together with the detailed description below, are incorporated in and form part of this specification. In the drawings:

[0030] Figure 1 A schematic diagram of the ultrafiltration water purification structure is shown.

[0031] Figure 2 A flowchart illustrating the method for optimizing the structure design of an ultrafiltration water purification system according to an embodiment of this application is shown.

[0032] Figure 3 A schematic diagram of a two-dimensional geometric model of an ultrafiltration water purification structure according to an embodiment of this application is shown;

[0033] Figure 4 A schematic diagram illustrating the partitioning of a geometric model according to an embodiment of this application is shown;

[0034] Figure 5 A schematic diagram of mesh generation of a geometric model according to an embodiment of this application is shown;

[0035] Figure 6 The diagram shows the velocity distribution cloud map of the ultrafiltration water purification structure;

[0036] Figure 7 The diagram shows the pressure distribution cloud map of the ultrafiltration water purification structure;

[0037] Figure 8 The surface eddy current distribution cloud map of the ultrafiltration water purification structure is shown;

[0038] Figure 9 The pressure distribution diagrams of the surface at three different locations—outer, middle, and inner—are shown in the geometric model.

[0039] Figure 10 A structural block diagram of an ultrafiltration water purification structure design optimization system according to an embodiment of this application is shown. Detailed Implementation

[0040] Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of the actual embodiments are described in the specification. However, it should be understood that many embodiment-specific decisions can be made in the development of any such actual embodiment to achieve the developer’s specific objectives, and these decisions may vary as the embodiments differ.

[0041] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the device structure closely related to the solution according to this application is shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0042] It should be understood that this application is not limited to the described embodiments by virtue of the following description with reference to the accompanying drawings. In this document, embodiments may be combined with each other, features may be substituted or borrowed between different embodiments, and one or more features may be omitted in one embodiment, where feasible.

[0043] Figure 2 A flowchart illustrating the ultrafiltration water purification structure design optimization method according to an embodiment of this application is shown. See also... Figure 2 The methods include:

[0044] Step S210: Establish a geometric model of the ultrafiltration water purification structure. The geometric model includes a rotating membrane part and a fluid part. The fluid part is divided into a rotating flow domain and a non-rotating flow domain. Geometric boundary conditions are added to the geometric model, including the rotation speed and the center of rotation of the geometric model. Material properties are added to the rotating and non-rotating flow domains of the geometric model. A dynamic mesh is added to the rotating flow domain.

[0045] In this step, the geometric model can be a two-dimensional model or a three-dimensional model. Correspondingly, the modeling interface can be a two-dimensional interface or a three-dimensional interface. The advantage of using a two-dimensional interface to build a two-dimensional model is that the geometric model can be divided with fewer meshes, thereby reducing the amount of calculation, shortening the calculation time, and clearly reflecting the differences in calculation results. The advantage of using a three-dimensional interface to build a three-dimensional model is that it can more realistically reflect the working state of the ultrafiltration water purification structure, but the amount of calculation and calculation time will increase accordingly.

[0046] The geometric model includes a rotating diaphragm section and a fluid section, with the fluid further divided into rotating and non-rotating flow domains. Here, circular or cylindrical geometry can be used to separate the rotating and non-rotating flow domains, and the boundary between the rotating and non-rotating flow domains is handled using a consistent pairing method.

[0047] In this step, boundary conditions are added to the geometric model. These boundary conditions include the rotational speed and rotation center of the geometric model, where the rotation center is the center of the rotating flow domain. Additionally, considering the rotation of the geometric model, a dynamic mesh needs to be added to the rotating flow domain.

[0048] In this step, material properties are added to the fluid region of the geometric model; here, the material can be selected from a material library, such as liquid water, ceramics, or gravel.

[0049] Step S220: Construct a physical model based on the geometric model, and add physical model boundary conditions to the physical model;

[0050] In this step, the physical model is an approximation of the fields experienced by the research object in the real world using a series of differential or partial differential equations. The accuracy of the physical model directly affects the feasibility of the simulation results, thus placing high demands on the professionalism of the modelers. The physical models constructed in this step include: temperature field, solid mechanical field, fluid dynamics field, electromagnetic field, etc.

[0051] In this step, the boundary conditions include: velocity, mass, pressure inlet / outlet, free surface, wall, thermal insulation, symmetry, etc. If the physical model is a fluid dynamics field, the boundary conditions of the physical model include inlet velocity, rotational velocity of the rotating flow domain, and slip properties of the boundary layer. Here, the boundary layer refers to the boundary region between the fluid and the wall.

[0052] Step S230: Mesh the geometric model to obtain the meshed geometric model;

[0053] For 3D structures, meshes can be created using tetrahedrons, pyramids, triangular prisms, or other similar shapes. Mesh generation can be achieved through automatic generation, user-defined methods, or external import. Specifically, the overall cell size is set to a standard size, and the boundary meshes for the edges of the rotating flow domain, the surface of the rotating diaphragm, and the central region of the rotating flow domain are ultra-refined. During mesh generation, the number of meshes and the degree of distortion are strictly controlled to avoid generating large obtuse angles and severely distorted elements. Then, the boundaries between the rotating and non-rotating flow domains are calibrated to hydrodynamics, and the mesh is set to a finer level. Free triangles are selected to define the boundaries between the rotating and non-rotating flow domains, and these boundaries are copied to the moving mesh to the consistent boundary. All domains of the geometric model are further refined. Here, the fluid properties on both sides of the moving mesh to the consistent boundary are kept consistent to ensure that different fluid properties do not appear due to geometric segmentation. The 2D geometric model is divided into domains, boundaries, and points. Boundary layers are set for all boundaries of the geometric model.

[0054] Step S240: Solve the physical model based on the geometric model after mesh generation to obtain relevant data of the physical model.

[0055] In this step, solution parameters are set, and a solver is used to solve the physical model. The solver can be a steady-state solver, a transient solver, or a parametric solver; different solvers can be used for different situations, including steady-state, transient, and parametric solutions. When the physical model is a solid mechanical field, the relevant data of the physical model include the stress, strain, and displacement of the object; when the physical model is a fluid mechanical field, the relevant data of the obtained physical model include the fluid velocity, pressure, etc.

[0056] Step S250 involves organizing, displaying, and analyzing the relevant data from the physical model to evaluate the performance of the ultrafiltration water purification structure.

[0057] In this embodiment, the relevant data of the physical model are processed as necessary and displayed in a certain way to evaluate the structural performance or the rationality of the design, and to provide corresponding improvements or optimizations. This is the purpose of structural finite element analysis. The displayed results are mainly related to the physical model used. For example, if the solid mechanical field is calculated, the stress, strain, and displacement of the object can be obtained; if the fluid mechanical field is calculated, the flow velocity, pressure distribution, etc., of the fluid can be obtained. Various post-processing display methods can be used, including one-dimensional, two-dimensional, three-dimensional, tables, images, and videos.

[0058] The embodiments described above in this application can provide engineers with standardized and efficient optimization directions in terms of ceramic diaphragm geometry, arrangement, and reasonable working condition settings, with controllable errors, short cycles, and low costs.

[0059] The following are the specific steps of another embodiment of the ultrafiltration water purification structure design optimization method, including:

[0060] Step 1: Establish the geometric model of the ultrafiltration water purification structure. This geometric model can be either two-dimensional (2D) or three-dimensional (3D), and correspondingly, the modeling interface can be either 2D or 3D. The advantage of using a 2D interface to build a 2D model is that it requires less meshing, thus reducing computational load and time, and clearly reflecting the differences in calculation results. The advantage of using a 3D interface to build a 3D model is that it can more realistically reflect the working state of the ultrafiltration water purification structure; however, this increases the computational load and time. Figure 3 A schematic diagram of a two-dimensional geometric model of an ultrafiltration water purification structure established according to an embodiment of this application is shown.

[0061] Step 2: Divide the geometric model into sections. The geometric model includes a rotating diaphragm section and a fluid section. The fluid section is further divided into rotating and non-rotating flow domains. Here, circular or cylindrical geometry can be used to separate the rotating and non-rotating flow domains. The boundary between the rotating and non-rotating flow domains is handled using a consistent pairing method. Figure 4 A schematic diagram of partitioning a geometric model according to an embodiment of this application is shown.

[0062] Step 3: Add boundary conditions to the geometric model. Here, the boundary conditions determine the rotation speed and rotation center of the geometric model. The rotation center is the center position of the rotating flow domain. In addition, add a moving mesh to the rotating flow domain.

[0063] Step 4: Add material properties to the fluid region of the geometric model; here, the material can be selected from the material library, such as liquid water, ceramics, or gravel.

[0064] Step 5: Construct the physical model. Specifically, when the constructed physical model is a hydrodynamic field, set the reference temperature and wall slip conditions, and create pressure constraint points. Select incompressible flow and adopt the turbulent k-ε model, which is one of the most commonly used turbulence models in industrial applications. This model introduces two additional transport equations and two dependent variables: turbulent kinetic energy k (J) and turbulent dissipation rate ε (%).

[0065] The turbulent viscosity model is as follows:

[0066]

[0067] In the formula, μ T ρ is the turbulent viscosity, in Pa·s; ρ is the density, in kg / m³. 3 C μ This is a model constant, taken as 0.09.

[0068] The transport equation for turbulent kinetic energy k is:

[0069]

[0070]

[0071] In the formula, u is the flow velocity, in m / s; μ is the dynamic viscosity, in Pa·s; σ k P is a coefficient, with a value of 1. k For generated items; The gradient operator for turbulent kinetic energy; The gradient operator for the flow velocity; For flux; ":" indicates tensor multiplication;

[0072] The transport equation for the turbulent dissipation rate ε is:

[0073]

[0074] Wherein, coefficient C ε1 =1.44, coefficient C ε2 =1.92, coefficient σ ε =1.3. The gradient operator for turbulent dissipation rate.

[0075] Step 6: Set the boundary conditions for the physical model. Here, the boundary conditions include the inlet flow velocity, the rotation speed of the rotating domain, and the slip properties of the boundary layer.

[0076] Step 7: Mesh the geometric model. For two-dimensional models, triangular or quadrilateral meshes can be used; for three-dimensional structures, tetrahedral, pyramidal, triangular prism, or tetrahedral meshes can be used. Figure 5 A schematic diagram of meshing a geometric model according to an embodiment of this application is shown.

[0077] Step 8: Set the solution parameters and use the solver to solve the physical model to obtain the relevant data of the physical model;

[0078] In this step, the fluid dynamics field is solved. The solution parameters are set as follows: output duration is 2 seconds, output time step is 0.02 seconds, relative tolerance is 0.01; the time stepping adopts the backward difference method, the initial step size is set to 0.001, the maximum BDF order is 2, the minimum BDF order is 1, and the event tolerance is 0.01.

[0079] When solving the physical model, a separate solution method can be used, specifically the PARDISO direct solver, to obtain relevant data of the physical model, including fluid velocity, pressure, etc.

[0080] Step 9 involves organizing, displaying, and analyzing the relevant data from the physical model to evaluate the performance of the ultrafiltration water purification structure. This step extracts the velocity, pressure, and pressure state on the membrane surface during the flow process. Figure 6 The diagram shows the velocity distribution cloud map of the ultrafiltration water purification structure. Figure 7 The diagram shows the pressure distribution cloud map of the ultrafiltration water purification structure. Figure 8 The surface eddy current distribution cloud map of the ultrafiltration water purification structure is shown. The pressure of the surface at three different locations (outer, middle, and inner) in the geometric model was extracted, and the data results are shown in Table 1. Figure 9 The pressure distribution diagrams of the surface at three different locations—outer, middle, and inner—in the geometric model are shown.

[0081] Table 1 Pressure Distribution on Diaphragm Surface

[0082]

[0083]

[0084]

[0085]

[0086] By studying the calculated data and cloud map results, it was found that the pressure distribution on the membrane surface varies significantly at different locations within the structure. The closer to the center of rotation, the greater the negative pressure caused by the flow, necessitating further increases in pressure differential and reducing filtration efficiency. As the radius of rotation increases, the surface velocity, Reynolds number, and eddy current intensity of the outermost membrane are greater than those of the inner membrane. The greater the turbulence on the surface, the less likely particulate matter is to form a dense membrane, thus mitigating membrane fouling and effectively reducing gaps in the membrane structure. The research results indicate that the filtration efficiency of the outer membrane is greater than that of the inner membrane. Therefore, it is necessary to use this system to conduct further simulation calculations for other structures to develop an ultrafiltration water purification structure that meets the requirements.

[0087] Based on the same inventive concept as the ultrafiltration water purification structure design optimization method in the embodiments of this application, the embodiments of this application also provide an ultrafiltration water purification structure design optimization system. Figure 10 A structural block diagram of an ultrafiltration water purification structure design optimization system according to an embodiment of this application is shown. The system includes:

[0088] The geometric model building module 101 is used to build the geometric model of the ultrafiltration water purification structure. The geometric model includes a rotating membrane part and a fluid part. The fluid part is divided into a rotating flow domain and a non-rotating flow domain. Geometric model boundary conditions are added to the geometric model, including the rotation speed and rotation center of the geometric model. Material properties are added to the rotating flow domain and the non-rotating flow domain of the geometric model. A dynamic mesh is added to the rotating flow domain.

[0089] The module provides a rich set of modeling tools, including but not limited to creating points, lines, surfaces, and volumes, and performing operations such as extrusion, shearing, rotation, mirroring, and Boolean operations. It also offers third-party import functionality, supporting common CAD formats such as STEP, STL, and IGS.

[0090] The geometric model can be a two-dimensional model or a three-dimensional model. Correspondingly, the modeling interface can be a two-dimensional interface or a three-dimensional interface. In this step, the advantage of using a two-dimensional interface to build a two-dimensional model is that the geometric model can be divided with fewer meshes, thereby reducing the amount of calculation, shortening the calculation time, and clearly reflecting the difference in calculation results. The advantage of using a three-dimensional interface to build a three-dimensional model is that it can more realistically reflect the working state of the ultrafiltration water purification structure, but the amount of calculation and calculation time will increase accordingly.

[0091] The geometric model includes a rotating diaphragm section and a fluid section, with the fluid further divided into rotating and non-rotating flow domains. Here, circular or cylindrical geometry can be used to separate the rotating and non-rotating flow domains, and the boundary between the rotating and non-rotating flow domains is handled using a consistent pairing method.

[0092] This module is also used to add boundary conditions to the geometric model. Here, the boundary conditions include the rotational speed and the center of rotation of the geometric model. The center of rotation is the center of the rotating flow domain. In addition, considering the rotation of the geometric model, a dynamic mesh needs to be added to the rotating flow domain.

[0093] Material properties are fundamental to physical process calculations. The system covers basic properties of common materials, including but not limited to: density, dynamic viscosity, coefficient of thermal expansion, elastic modulus, Poisson's ratio, etc. It also supports user-defined material and related properties, offering powerful customization capabilities. Material properties are added to the fluid region of the geometric model. Here, materials can be selected from a material library, such as liquid water, ceramics, or gravel.

[0094] The physical model construction module 102 is used to construct a physical model based on the geometric model. The physical model has added physical model boundary conditions.

[0095] A physical model is an approximation of the fields experienced by the research object in the real world using a series of differential or partial differential equations. The accuracy of the physical model directly affects the feasibility of the simulation results, thus placing high demands on the professionalism of the modelers. The physical models constructed in this step include: temperature field, solid mechanical field, fluid dynamics field, electromagnetic field, etc.

[0096] Boundary conditions include: velocity, mass, pressure, inlet / outlet, free surface, wall, thermal insulation, symmetry, etc.; if the physical model is a fluid dynamics field, the boundary conditions of the physical model include inlet velocity, rotational velocity of the rotating domain, and slip properties of the boundary layer.

[0097] Mesh generation module 103 is used to mesh the geometric model to obtain the meshed geometric model;

[0098] For 3D structures, meshes can be created using tetrahedrons, pyramids, triangular prisms, or other similar shapes. Mesh generation can be achieved through automatic generation, user-defined methods, or external import. Specifically, the overall cell size is set to a standard size, and the boundary meshes for the edges of the rotating flow domain, the surface of the rotating diaphragm, and the central region of the rotating flow domain are ultra-refined. During mesh generation, the number of meshes and the degree of distortion are strictly controlled to avoid generating large obtuse angles and severely distorted elements. Then, the boundaries between the rotating and non-rotating flow domains are calibrated to hydrodynamics, and the mesh is set to a finer level. Free triangles are selected to define the boundaries between the rotating and non-rotating flow domains, and these boundaries are copied to the moving mesh to the consistent boundary. All domains of the geometric model are further refined. Here, the fluid properties on both sides of the moving mesh to the consistent boundary are kept consistent to ensure that different fluid properties do not appear due to geometric segmentation. The 2D geometric model is divided into domains, boundaries, and points. Boundary layers are set for all boundaries of the geometric model.

[0099] The solver module 104 is used to solve the physical model based on the geometric model after mesh generation, and obtain the relevant data of the physical model.

[0100] The solver module's task is to solve the physical model. Due to the massive computational load, this part is entirely controlled by the solver and completed automatically on the computer. The system provides multiple solvers for different situations. The solvers are steady-state solvers, transient solvers, or parametric solvers; different solvers can be used for different situations, including steady-state, transient, and parametric solutions. When the physical model is a solid mechanical field, the relevant data includes the stress, strain, and displacement of the object; when the physical model is a fluid mechanical field, the relevant data includes the fluid velocity, pressure, etc. Specifically, steady-state solves invariant problems, i.e., partial differential equations containing only spatial partial differentials; transient solves unsteady problems, i.e., partial differential equations containing both spatial and temporal partial differentials; parametric solves steady-state problems with a series of parameters.

[0101] Analysis module 105 is used to organize, display and analyze the relevant data of the physical model in order to evaluate the performance of the ultrafiltration water purification structure.

[0102] In this embodiment, the relevant data of the physical model are processed as necessary and displayed in a certain way to evaluate the structural performance or the rationality of the design, and to provide corresponding improvements or optimizations. This is the purpose of structural finite element analysis. The displayed results are mainly related to the physical model used. For example, if the solid mechanical field is calculated, the stress, strain, and displacement of the object can be obtained; if the fluid mechanical field is calculated, the flow velocity, pressure distribution, etc., of the fluid can be obtained. The system provides multiple post-processing display formats, including one-dimensional, two-dimensional, three-dimensional, tables, images, and videos.

[0103] The embodiments described above in this application can provide engineers with standardized and efficient optimization directions in terms of ceramic diaphragm geometry, arrangement, and reasonable working condition settings, with controllable errors, short cycles, and low costs.

[0104] In summary, the embodiments of this application can quickly calculate the performance results of the ultrafiltration water purification membrane structure, such as the strength of the membrane, the wastewater treatment flux, and the treatment efficiency. Compared with traditional experimental methods, this method greatly saves the time required to obtain results. By calculation, a mid-level engineer equipped with a workstation featuring an Intel i9 or higher CPU with a main frequency of no less than 3GHz, 16GB or more of memory, and a dedicated graphics card with 8GB or more of video memory can generally obtain results in two days after becoming familiar with all the calculation processes. Compared with the time cost of 1 to 2 months required for real physical experiments, this method greatly improves efficiency and reduces trial and error costs.

[0105] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described ultrafiltration water purification structure design optimization method.

[0106] This application also provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the above-described ultrafiltration water purification structure design optimization method.

[0107] The above descriptions are merely various embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for optimizing the structural design of an ultrafiltration water purification system, characterized in that, include: A geometric model of an ultrafiltration water purification structure is established. The geometric model includes a rotating membrane part and a fluid part. The fluid part is divided into a rotating flow domain and a non-rotating flow domain. The geometric model is given boundary conditions, which include the rotational speed and center of rotation of the geometric model; material properties are added to the rotating and non-rotating flow domains of the geometric model, and a dynamic mesh is added to the rotating flow domain; A physical model is constructed based on the geometric model, and physical model boundary conditions are added to the physical model. The geometric model is meshed to obtain the meshed geometric model; The physical model is solved based on the geometric model after mesh division to obtain the relevant data of the physical model; The relevant data from the physical model are organized, displayed, and analyzed to evaluate the performance of the ultrafiltration water purification structure.

2. The method as described in claim 1, characterized in that, in, The physical model is solved based on the geometric model after mesh generation to obtain relevant data of the physical model, including: Set the solution parameters and use a solver to solve the physical model. The solver can be a steady-state solver, a transient solver, or a parameterized solver.

3. The method as described in claim 1, characterized in that, The physical model is a flow physical field, temperature field, solid mechanical field, fluid dynamics field, or electromagnetic field.

4. The method as described in claim 1, characterized in that, The physical model is a fluid dynamics field, and the boundary conditions of the physical model include the inlet velocity, the rotational velocity of the rotating flow domain, and the slip properties of the boundary layer.

5. An ultrafiltration water purification structural design optimization system, characterized in that, include: The geometric model building module is used to build a geometric model of the ultrafiltration water purification structure. The geometric model includes a rotating membrane part and a fluid part. The fluid part is divided into a rotating flow domain and a non-rotating flow domain. Geometric model boundary conditions are added to the geometric model, including the rotational speed and the center of rotation of the geometric model. Material properties are added to the rotating flow domain and the non-rotating flow domain of the geometric model. A dynamic mesh is added to the rotating flow domain. The physical model construction module is used to construct a physical model based on the geometric model, wherein physical model boundary conditions are added to the physical model. The mesh generation module is used to perform mesh generation on the geometric model to obtain a meshed geometric model. The solver module is used to solve the physical model based on the geometric model after the mesh is divided, and to obtain the relevant data of the physical model; The analysis module is used to organize, display, and analyze the relevant data of the physical model in order to evaluate the performance of the ultrafiltration water purification structure.

6. The system as described in claim 5, characterized in that, The solution module is also used for: Set the solution parameters and use a solver to solve the physical model. The solver can be a steady-state solver, a transient solver, or a parameterized solver.

7. The system as described in claim 5, characterized in that, The physical model is a flow physical field, temperature field, solid mechanical field, fluid dynamics field, or electromagnetic field.

8. The system as described in claim 5, characterized in that, The physical model is a flow physical field, and the boundary conditions of the physical model include the inlet velocity, the rotational velocity of the rotating flow domain, and the slip properties of the boundary layer.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the ultrafiltration water purification structure design optimization method according to any one of claims 1-4.

10. A computer program product, characterized in that, It includes a computer program / instruction, which, when executed by a processor, implements the ultrafiltration water purification structure design optimization method according to any one of claims 1-4.

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