Field terrestrial heat analogue simulation method and system based on digital twinning

Abstract

The invention relates to the technical field of analogue simulation, in particular to a field terrestrial heat analogue simulation method and system based on digital twinning, and the method comprises the steps: building a U-shaped buried pipe structure model, and carrying out the simulation calculation of a soil temperature field; the method comprises the following steps: establishing a digital twinning virtual test field simulation environment by constructing a geothermal test field digital twinning model; displaying and updating the heat exchange simulation data of the buried pipe in real time according to the simulation data; carrying out lightweight processing on the digital twinborn model, and optimizing the digital twinborn model subjected to the lightweight processing; by defining a player object, interactive operation under a first-person view angle is realized. The method has the beneficial effects that the performance and underground temperature distribution of the geothermal system can be accurately predicted, the monitoring capability of the state of the geothermal system is enhanced, timely adjustment and optimization operation are facilitated, the operation efficiency of the model and the user experience are improved, and interactive access and display of data of the underground pipe heat exchanger in a virtual scene are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of simulation, and particularly to a method and system for field geothermal simulation based on digital twin. Background Art

[0002] With the rapid development of information technology, digital twin technology, as a new digital technology model, shows broad application prospects in many fields. However, in the field of development and utilization of geothermal resources, there are some significant deficiencies in the existing technologies. First, traditional geothermal test sites are usually located in remote areas, which limits frequent on-site visits and real-time monitoring, resulting in delays in data collection and analysis. Second, the construction and maintenance costs of geothermal test sites are relatively high, which includes not only the initial construction investment but also the long-term operation and maintenance costs, restricting the exploration and development of more extensive geothermal resources. In addition, the functionality of geothermal test sites is limited, often only providing limited data and analysis results, making it difficult to achieve a comprehensive and in-depth understanding of geothermal systems. These limitations affect the efficiency and large-scale process of geothermal resource development, and the potential of geothermal energy as a clean and renewable energy source has not been fully exploited. Therefore, there is an urgent need for new technologies in the field of geothermal resources to overcome these challenges and achieve more efficient and low-cost development and utilization. Summary of the Invention

[0003] In view of the problems existing in the above or the prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a method for field geothermal simulation based on digital twin, which can achieve efficient development of geothermal resources and integrate and interact with data in real time.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A method for field geothermal simulation based on digital twin, which includes simulating and calculating the soil temperature field by establishing a U-shaped buried pipe structure model;

[0006] Establishing a digital twin virtual test site simulation environment by constructing a digital twin model of the geothermal test site;

[0007] According to the simulation data, the heat exchange simulation data of the buried pipe is displayed and updated in real time;

[0008] Lightweight processing is performed on the digital twin model, and the lightweight digital twin model is optimized;

[0009] By defining a player object, interactive operations in the first-person perspective are realized.

[0010] As a preferred solution of the in - field geothermal simulation method based on digital twin of the present invention, the establishment of the U - shaped buried pipe structure model includes using the SpaceClaim tool in ANSYS software to establish the U - shaped buried pipe structure model, and using FluentMeshing to mesh the model calculation domain, and performing mesh encryption on the elbow part and the fluid part;

[0011] Simulate and calculate the soil temperature field, that is, set boundary and material parameters in Fluent software, simulate and calculate the soil temperature field, and obtain the temperature nephogram.

[0012] As a preferred solution of the in - field geothermal simulation method based on digital twin of the present invention, the digital twin virtual test field simulation environment includes a geothermal test field digital twin model, virtual buried pipe equipment, and a virtual formation model.

[0013] As a preferred solution of the in - field geothermal simulation method based on digital twin of the present invention, the real - time display and update of the buried pipe heat exchange simulation data include,

[0014] Create a human - machine interaction interface using UGUI components in Unity3D to display the buried pipe heat exchange simulation data;

[0015] Write a C# script to enable users to read the simulation data of the buried pipe heat exchanger model through click operations in the virtual test field;

[0016] Bind the read simulation data to UI elements to achieve real - time display and update of the data.

[0017] As a preferred solution of the in - field geothermal simulation method based on digital twin of the present invention, the lightweight processing of the digital twin model includes,

[0018] Establish a model of the geothermal test field buildings and monitoring equipment and perform lightweight processing;

[0019] Export the lightweight model in FBX format and import it into Unity3D for real - time rendering and interactive simulation;

[0020] Optimize the imported model in Unity3D to improve the operation efficiency and visual effect of the simulation environment.

[0021] As a preferred solution of the in - field geothermal simulation method based on digital twin of the present invention, the realization of the interactive operation in the first - person perspective includes,

[0022] Add a collider to the buried pipe heat exchanger model and attach a label;

[0023] Create a click-to-read script that connects to the mouse click position by emitting a ray.

[0024] To solve the above technical problems, the present invention also provides the following technical solutions: A field geothermal simulation system based on digital twin, which includes a simulation module: used to create and simulate a three-dimensional model of a U-shaped buried pipe, and conduct geothermal heat exchange simulation analysis;

[0025] A communication module: used to collect the actual operation data of the buried pipe heat exchanger, provide real-time input for the simulation model, and at the same time be used for internal data transmission and connection to an external network;

[0026] A data processing module: used to store, process, and analyze a large amount of data generated by the simulation, as well as the operation data collected by actual sensors;

[0027] An interaction module: provides an immersive virtual environment and establishes a mode of interacting with the virtual test site from a first-person perspective.

[0028] As a preferred solution of the field geothermal simulation system based on digital twin of the present invention, wherein: the simulation module includes a processor, memory, and graphics card, a 3D mouse and a digital tablet, a display, ANSYS, 3Ds Max, and Unity3D;

[0029] The processor, memory, and graphics card are used to run ANSYS, 3Ds Max, and Unity3D;

[0030] 3D mouse and digital tablet: used for 3D model operation and design;

[0031] High-resolution display: used to display 3D models and simulation results.

[0032] As a preferred solution of the field geothermal simulation system based on digital twin of the present invention, wherein: the communication module includes a router and a firewall, a wireless access point, and network cables and connectors;

[0033] Router and firewall: ensure network communication security;

[0034] Wireless access point: provides a wireless network connection;

[0035] Network cables and connectors: used for wired network connection;

[0036] The data processing module includes a data server, data analysis software, and a network switch;

[0037] Data server: stores and processes simulation data;

[0038] Data analysis software: used to process and analyze simulation results;

[0039] Network switch: Ensures high-speed data transmission between servers and workstations.

[0040] As a preferred solution of the digital twin-based field geothermal simulation system of the present invention, wherein: The interaction module includes a touch screen display and a virtual reality helmet;

[0041] Touch screen display: Used to display and interact with the user interface;

[0042] Virtual reality helmet: Used to implement a first-person interactive virtual test site.

[0043] Advantages of the present invention: By establishing a U-shaped buried pipe structure model and simulating and calculating the soil temperature field, the present invention can accurately predict the performance of the geothermal system and the underground temperature distribution; The real-time display and update function of the simulation data enhances the monitoring ability of the geothermal system state, facilitating timely adjustment and optimization of operations. The lightweight processing and optimization of the digital twin model improve the operation efficiency of the model and the user experience. Defining the first-person perspective interaction operation implemented by the player object provides a more intuitive and immersive virtual environment experience for users. By adding a collider and writing a click-to-read script, the interactive access and display of the buried pipe heat exchanger data in the virtual scene are realized, greatly enhancing the interactivity and practicality of the virtual test site. Brief Description of the Drawings

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0045] Figure 1 Schematic diagram of the buried pipe model for the digital twin-based field geothermal simulation method.

[0046] Figure 2 Schematic diagram of the mesh model of the U-shaped pipe elbow part for the digital twin-based field geothermal simulation method.

[0047] Figure 3 Schematic diagram of the simulation result of the buried pipe heat transfer model for the digital twin-based field geothermal simulation method. Detailed Embodiments

[0048] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings of the specification.

[0049] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways than those specifically described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0050] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0051] Embodiment 1

[0052] Refer to 1 to Figure 3 This is the first embodiment of the present invention, which provides a field geothermal simulation method based on digital twin, capable of achieving efficient development of geothermal resources and integrating and real-time interacting with data.

[0053] Specifically, by establishing a U-shaped buried pipe structure model, the soil temperature field is simulated and calculated;

[0054] By constructing a digital twin model of the geothermal test field, a simulation environment of the digital twin virtual test field is established;

[0055] According to the simulation data, the simulation data of the buried pipe heat exchange is displayed and updated in real time;

[0056] The digital twin model is lightweight processed, and the lightweight digital twin model is optimized;

[0057] By defining a player object, interactive operations in the first-person perspective are realized.

[0058] Furthermore, establishing a U-shaped buried pipe structure model includes using the SpaceClaim tool in ANSYS software to establish a U-shaped buried pipe structure model, and using FluentMeshing to mesh the model calculation domain, and performing mesh encryption on the elbow part and the fluid part;

[0059] It should be noted that in Fluent Meshing, the "Local Mesh Refinement" function is used to encrypt the mesh in a specific area, that is, the key areas of the elbow part and the fluid part are selected, and a smaller mesh size or a higher mesh density is set;

[0060] For the area that needs to be encrypted, the Size Function is used to control the mesh size. By defining a mesh size field that varies with position using the size function, smaller size values can be set in the elbow and fluid regions. The final mesh model of the elbow part of the U-shaped tube is as shown in Figure 2 as follows.

[0061] Additional mesh layers are created on or near the surfaces of the elbow and fluid parts through "boundary layer meshing" to capture the boundary layer effect and complex flow details. Outside the mesh refinement area, the mesh growth rate can also be set to make the mesh gradually coarser outward from the refinement area.

[0062] The soil temperature field is simulated and calculated, that is, the boundary and material parameters are set in the Fluent software to simulate and calculate the soil temperature field, and a temperature contour map is obtained, as shown in Figure 3 as follows.

[0063] It should be noted that the simulation and calculation of the soil temperature field need to describe the heat transfer process in the soil through energy conservation. The specific formula is as follows:

[0064]

[0065] where ρ is the density of the soil (kg / m 3 ), c p is the specific heat capacity of the soil (J / kg·K), T is the temperature (K), t is the time (s), k is the thermal conductivity of the soil (W / m·K), and Q is the heat source term per unit volume (W / m 3 ).

[0066] Boundary conditions are set in the Fluent software, including

[0067] Dirichlet boundary condition (specifying the temperature), and the formula is as follows:

[0068] T = T specified at ΓT

[0069] Neumann boundary condition (specifying the heat flux density), and the formula is as follows:

[0070]

[0071] Robin boundary condition (convection boundary condition):

[0072]

[0073] where T specified is the specified temperature value, q is the heat flux density (W / m 2), h is the convective heat transfer coefficient (W / m 2 ·K), T ambient is the ambient temperature (K), is the unit normal vector of the boundary.

[0074] Among them, in the Fluent software, the material parameter settings involved in the simulation are shown in Table 1:

[0075] Parameter Name Parameter Value Thermal Conductivity of U-tube 0.42W / m·K Thermal Conductivity of Backfill Soil 1.5W / m·K Average Thermal Conductivity of Formation 1.405W / m·K Average Specific Heat Capacity of Formation 1558.45J / m3·K Inlet Water Temperature 35℃ Flow Velocity in Pipe 0.7m / s Initial Subsurface Temperature 18.5℃

[0076] Table 1 Parameter settings

[0077] Furthermore, the digital twin virtual test field simulation environment includes a geothermal test field digital twin model, virtual buried pipe equipment, and a virtual formation model.

[0078] It should be noted that the establishment of the digital twin virtual test field includes,

[0079] By working together with 3DsMax and Unity3D software, constructing digital twin models of the field geothermal test field and buried pipe equipment;

[0080] Constructing a geothermal test field digital twin simulation scenario composed of a geothermal test field digital twin model, virtual buried pipe equipment, and a virtual formation model in Unity3D;

[0081] Designing and implementing an interactive interface for buried pipe heat transfer simulation data in the virtual test field to read and display simulation data.

[0082] Furthermore, the real-time display and update of buried pipe heat transfer simulation data include,

[0083] Using UGUI components in Unity3D to create a human-computer interaction interface to display buried pipe heat transfer simulation data;

[0084] Writing a C# script to enable users to read the simulation data of the buried pipe heat exchanger model through click operations in the virtual test field;

[0085] Binding the read simulation data to UI elements to achieve real-time display and update of the data.

[0086] It should be noted that the C# script for the virtual test field defines a DataReader class, which contains an Update method to detect mouse click events and uses Unity's physical raycasting (Physics.Raycast) to determine the object clicked by the user. For example, if the clicked object is a buried pipe heat exchanger (identified by a label), the ShowData method is called to display the simulation data of that object. The specific script is as follows:

[0087]

[0088]

[0089] Furthermore, the lightweight processing of the digital twin model includes

[0090] building a model of the geothermal test site buildings and monitoring equipment and performing lightweight processing;

[0091] exporting the lightweight model in FBX format and importing it into Unity3D for real-time rendering and interactive simulation;

[0092] optimizing the imported model in Unity3D to improve the running efficiency and visual effects of the simulation environment.

[0093] It should be noted that the lightweight processing of the digital twin model includes geometric simplification, texture optimization, level of detail, data structure optimization, as well as script and logic optimization;

[0094] Among them, geometric simplification includes reducing the number of polygons of the model while trying to maintain the accuracy of the appearance and shape;

[0095] Texture optimization includes compressing texture files to reduce their size while trying to maintain the image quality, using texture atlas technology to merge multiple small textures into one large texture, and reducing draw calls;

[0096] Level of detail includes implementing models with multiple levels of detail, using a low-polygon version of the model when the camera is far away, and a high-polygon version when the camera is close;

[0097] Data structure optimization includes using an efficient data structure to store model data, reducing memory occupancy and improving data processing speed;

[0098] Script and logic optimization includes optimizing script code, reducing unnecessary calculations and logical judgments, merging or deleting redundant scripts and components, and reducing the CPU burden.

[0099] Furthermore, the implementation of interactive operations in the first-person perspective includes

[0100] adding a collider to the buried pipe heat exchanger model and attaching a tag;

[0101] Making a click-to-read script and connecting it to the mouse click position by emitting a ray.

[0102] It should be noted that when the object tag detected by the click-to-read script is a specific value, the bound UI element is displayed, and the software is further run to implement the function of clicking on the buried pipe heat exchanger model in the virtual scene to read and display relevant data.

[0103] In summary, by establishing a U-shaped buried pipe structure model and simulating and calculating the soil temperature field, the present invention can accurately predict the performance of the geothermal system and the underground temperature distribution; the real-time display and update function of the simulation data enhance the monitoring ability of the geothermal system state, facilitating timely adjustment and optimization of operations. The lightweight processing and optimization of the digital twin model improve the operation efficiency of the model and the user experience. The first-person perspective interaction operation implemented by defining the player object provides users with a more intuitive and immersive virtual environment experience. By adding colliders and writing click-to-read scripts, the interactive access and display of the data of the buried pipe heat exchanger in the virtual scene are realized, greatly enhancing the interactivity and practicality of the virtual test site.

[0104] Embodiment 2

[0105] Refer to 1 to Figure 3 , which is the second embodiment of the present invention. This embodiment provides a field geothermal simulation method based on digital twins, which can achieve efficient development of geothermal resources and integrate and interact with data in real time.

[0106] Specifically, the digital twin virtual test site is specifically applied to the simulation of buried pipe heat transfer. By using the digital twin virtual test site, a mathematical model for simulating buried pipe heat transfer is established to simulate the data of buried pipe heat transfer. The specific calculation process includes the control differential equation, the momentum conservation equation, and the energy conservation equation, which are as follows:

[0107] Control differential equation

[0108] The fluid flow in the U-shaped pipe is mainly turbulent flow. This fluid is generally incompressible and is solved using the k-ε model. This model includes:

[0109] The mass conservation equation, which stipulates that the mass increment of the fluid microelement in unit time is equal to the static mass flowing in during the same time. In this solution, the fluid in the buried pipe is an incompressible fluid, and the density ρ of the fluid in the buried pipe is a constant. Then the above formula is simplified, and the specific simplified formula is as follows:

[0110]

[0111] Among them, x, y, and z are the three directions of the rectangular coordinate system; u, v, and w are the flow velocities in each rectangular coordinate direction;

[0112] ρ is the fluid density, a constant; t is time.

[0113] Momentum conservation equation

[0114] The momentum conservation equation, namely the momentum equation, refers to that the sum of forces on the fluid in the elemental volume is equal to the rate of change of the fluid's momentum. Through this law, the momentum conservation equations in the three directions of x, y, and z can be derived, and their formulas are as follows:

[0115]

[0116] Among them, P is the pressure of the fluid microelement; τ xx 、τ xy 、τ xz etc. are the components of the viscous force acting on the surface of the microelement due to molecular viscosity; F x 、F y 、F z are the body forces on the microelement.

[0117] Energy conservation equation

[0118] The energy conservation equation is a fundamental law in heat exchange flow. It is actually the first law of thermodynamics, and its definition is: the rate of increase of energy in the microelement is equal to the net heat flux entering the microelement and the work done on the microelement. Its formula is as follows:

[0119]

[0120] Among them, c P is the specific heat capacity; T is the temperature; S T is the internal heat source of the fluid and the part of the conversion of fluid mechanical energy into heat energy due to viscosity.

[0121] Furthermore, by implementing the simplification of the model for the buried pipe heat exchange model, due to reasons such as the large span of the actual buried pipe physical model and the uneven distribution of soil, in order to simplify the calculation, the following assumptions are made for the model:

[0122] The soil is a physically isotropic whole;

[0123] It is assumed that the thermophysical parameters of the fluid, buried pipe, backfill soil, etc. do not change with temperature;

[0124] The interaction between pipe groups is not considered, and the underground seepage situation is ignored;

[0125] It is assumed that the initial soil temperature is the average soil temperature.

[0126] According to the above assumptions, a simplified model of the buried pipe heat exchange model is established. The buried pipe heat exchanger model mainly consists of the external soil, backfill soil, the pipe wall of the U-shaped pipe, and the water flowing and exchanging heat inside the buried pipe. The model size is a cylinder with a radius of 1m and a depth of 50m, divided into four layers (or two layers). The buried depth of the buried pipe is 47.93m, the borehole diameter is 400mm, the buried pipe diameter is 50mm, and the soil radius is 1m. The outer diameter of the U-shaped pipe is 25mm, the inner diameter is 21mm, the center distance between the two pipes is 260mm, and water is used as the fluid inside the pipe for heat exchange circulation. The specific model parameters are shown in Table 2, and the buried pipe model is as Figure 1 shown:

[0127] Structure Parameter Parameter Value Unit Drilling Depth 47.8 m Drilling Hole Diameter 0.4 m Outer Diameter of U-tube 0.05 m Inner Diameter of U-tube 0.042 m Wall Thickness 0.004 m Center Distance between Two Pipes 0.26 m

[0128] Table 2 Model Structure Parameters

[0129] In summary, through the establishment of the U-shaped buried pipe structure model and the simulation calculation of the soil temperature field, the present invention can accurately predict the performance of the geothermal system and the underground temperature distribution; the real-time display and update function of the simulation data enhance the monitoring ability of the geothermal system state, facilitating timely adjustment and optimization of operations. The lightweight processing and optimization of the digital twin model improve the operation efficiency and user experience of the model. The implementation of the first-person perspective interaction operation by defining the player object provides users with a more intuitive and immersive virtual environment experience. By adding a collider and writing a click-to-read script, the interactive access and display of the buried pipe heat exchanger data in the virtual scene are realized, greatly enhancing the interactivity and practicality of the virtual test field.

[0130] Example 3

[0131] This example is the third example of the present invention, which provides a field geothermal simulation method based on digital twins, capable of realizing the efficient development of geothermal resources and integrating and real-time interacting data.

[0132] Specifically, the simulation module: used to create and simulate the three-dimensional model of the U-shaped buried pipe, and conduct geothermal heat exchange simulation analysis;

[0133] The communication module: used to collect the actual operation data of the buried pipe heat exchanger, provide real-time input for the simulation model, and at the same time used for internal data transmission and connection to the external network;

[0134] The data processing module: used to store, process, and analyze a large amount of data generated by the simulation, as well as the operation data collected by actual sensors;

[0135] The interaction module: provides an immersive virtual environment and establishes a mode of interacting with the virtual test field from the first-person perspective.

[0136] Further, the simulation module includes a processor, memory, a graphics card, a 3D mouse, a digitizing tablet, a display, ANSYS, 3Ds Max, and Unity3D;

[0137] The processor, memory, and graphics card are used to run ANSYS, 3Ds Max, and Unity3D;

[0138] 3D mouse and digitizing tablet: Used for 3D model operation and design;

[0139] High-resolution display: Used to display 3D models and simulation results.

[0140] Further, the communication module includes a router, a firewall, a wireless access point, and network cables and connectors;

[0141] Router and firewall: Ensure network communication security;

[0142] Wireless access point: Provide wireless network connection;

[0143] Network cables and connectors: Used for wired network connection;

[0144] The data processing module includes a data server, data analysis software, and a network switch;

[0145] Data server: Store and process simulation data;

[0146] Data analysis software: Used to process and analyze simulation results;

[0147] Network switch: Ensure high-speed data transmission between the server and the workstation.

[0148] Further, the interaction module includes a touch screen display and a virtual reality headset;

[0149] Touch screen display: Used to display and interact with the user interface;

[0150] Virtual reality headset: Used to implement a first-person interactive virtual test field.

[0151] In summary, by establishing a U-shaped buried pipe structure model and simulating and calculating the soil temperature field, the present invention can accurately predict the performance of the geothermal system and the underground temperature distribution; the real-time display and update function of the simulation data enhance the monitoring ability of the geothermal system state, facilitating timely adjustment and optimization of operations. The lightweight processing and optimization of the digital twin model improve the operation efficiency and user experience of the model. The first-person perspective interaction operation implemented by defining the player object provides users with a more intuitive and immersive virtual environment experience. By adding colliders and writing click-to-read scripts, the interactive access and display of the buried pipe heat exchanger data in the virtual scene are realized, greatly enhancing the interactivity and practicality of the virtual test field.

[0152] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (such as installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number, or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the functions described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0153] In addition, to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described.

[0154] It should be understood that in the development of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without excessive experimentation, the development efforts will be a routine task of design, manufacturing, and production.

[0155] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A field geothermal simulation method based on digital twin, characterized in that: including By establishing a U-shaped buried pipe structure model, simulating and calculating the soil temperature field; By constructing a digital twin model of the geothermal test field, establishing a simulation environment for the digital twin virtual test field; According to the simulation data, the buried pipe heat transfer simulation data is displayed and updated in real time; Lightweight processing of the digital twin model, and optimizing the lightweight digital twin model; By defining a player object, realizing interactive operations from the first-person perspective.

2. The method for field geothermal simulation based on digital twin according to claim 1, characterized in that: The establishment of the U-shaped buried pipe structure model includes using the SpaceClaim tool in ANSYS software to establish the U-shaped buried pipe structure model, and using FluentMeshing to mesh the model calculation domain, and encrypting the mesh of the elbow part and the fluid part; The simulation and calculation of the soil temperature field means setting boundary and material parameters in Fluent software, simulating and calculating the soil temperature field, and obtaining a temperature contour map.

3. The method for field geothermal simulation based on digital twin according to claim 2, wherein: The simulation environment of the digital twin virtual test field includes a digital twin model of the geothermal test field, virtual buried pipe equipment, and a virtual formation model.

4. The method for field geothermal simulation based on digital twin according to claim 3, wherein: The real-time display and update of the buried pipe heat transfer simulation data includes Using UGUI components in Unity3D to create a human-computer interaction interface to display the buried pipe heat transfer simulation data; Writing a C# script to enable users to read the simulation data of the buried pipe heat exchanger model through click operations in the virtual test field; Binding the read simulation data to UI elements to achieve real-time display and update of the data.

5. The method for field geothermal simulation based on digital twin according to claim 4, characterized in that: The lightweight processing of the digital twin model includes Establishing a model of the geothermal test field building and monitoring equipment and performing lightweight processing; Exporting the lightweight model in FBX format and importing it into Unity3D for real-time rendering and interactive simulation; Optimizing the imported model in Unity3D to improve the operation efficiency and visual effect of the simulation environment.

6. The method for field geothermal simulation based on digital twin according to claim 5, wherein: The realization of the interactive operation from the first-person perspective includes Adding a collider to the buried pipe heat exchanger model and attaching a label; Making a click-to-read script and connecting it to the mouse click position by emitting a ray.

7. A field geothermal simulation system based on digital twin, applicable to the above-mentioned field geothermal simulation method based on digital twin, characterized in that: including Simulation module: used to create and simulate a 3D model of a U-shaped buried pipe, and perform geothermal heat transfer simulation analysis; Communication module: used to collect the actual operation data of the buried pipe heat exchanger, provide real-time input for the simulation model, and at the same time used for internal data transmission and connection to the external network; Data processing module: used to store, process and analyze a large amount of data generated by simulation, as well as the operation data collected by actual sensors; Interaction module: provides an immersive virtual environment, and establishes a mode of interacting with the virtual test field from the first-person perspective.

8. The digital-twin-based field geothermal simulation system according to claim 7, wherein: The simulation module includes a processor, memory and graphics card, 3D mouse and digitizer, monitor, ANSYS, 3Ds Max, and Unity3D; The processor, memory and graphics card are used to run ANSYS, 3Ds Max and Unity3D; The 3D mouse and digitizer: used for 3D model operation and design; The high-resolution monitor: used to display 3D models and simulation results.

9. The digital-twin-based field geothermal simulation system according to claim 8, characterized in that: The communication module includes a router, a firewall, a wireless access point, as well as network cables and connectors; The router and firewall: Ensure network communication security; The wireless access point: Provide wireless network connections; The network cables and connectors: For wired network connections; The data processing module includes a data server, data analysis software, and a network switch; The data server: Store and process simulation data; The data analysis software: Used to process and analyze simulation results; The network switch: Ensure high-speed data transmission between the server and the workstation.

10. The digital twin-based field geothermal simulation system according to claim 9, characterized in that: The interaction module includes a touch screen display and a virtual reality helmet; The touch screen display: Used to display and interact with the user interface; The virtual reality helmet: Used to implement a first-person interactive virtual test field.

Images