271 results about "Advection" patented technology

Preferred embodiments relates to a cooling system and a method for cooling an electronic display. Embodiments include a transparent liquid cooling chamber, a reservoir tank, and a pump. The components in the system are preferably housed within the electronic display housing. The cooling chamber defines a fluid compartment that is anterior to and coextensive with the electronic display surface. Circulating coolant removes heat directly from the electronic display surface by advection. In order to view the display, the coolant fluid is transparent or at least semi-transparent. The image quality of an exemplary embodiment remains essentially unchanged, even though coolant is flowing over the visible face of the electronic display surface.

The method provides a new fluid simulation technique that significantly reduces the non-physical dissipation of velocity using particles and derivative information. In solving the conventional Navier-Stokes equations, the method replace the advection part with a particle simulation. When swapping between the grid-based and particle-based simulators, the physical quantities such as the level set and velocity must be converted. A novel dissipation-suppressing conversion procedure that utilizes the derivative information stored in the particles as well as in the grid points is developed. Through several experiments, the proposed technique can reproduce the detailed movements of high-Reynolds-number fluids, such as droplets / bubbles, thin water sheets, and whirlpools. The increased accuracy in the advection, which forms the basis of the proposed technique, can also be used to produce better results in larger scale fluid simulations.

A system and method for shallow water simulation may provide a framework for solving General Shallow Wave Equations (GSWE) to efficiently simulate 3D fluid effects on arbitrary surfaces using a height field representation. The height field representation may include height columns constructed along surface normals, which may be dependent on a condition of boundary cells adjacent to fluid cells and / or artificial viscosity effects. The framework may provide implicit schemes for solving for the effects of external forces applied to the fluid, including gravity and surface tension, and explicit schemes for solving for advection effects. The system and method may be implemented on general-purpose CPU(s) and / or GPU(s) and may be capable of simulating a variety of fluid effects including: waves, rivulets and streams, drops, and capillary events. In some embodiments, the system and method may achieve real-time fluid control and fluid shape design through user-interaction (e.g., in a graphical painting application).

The present invention provides a system, method and product for porting computationally complex CFD calculations to a coprocessor in order to decrease overall processing time. The system comprises a CPU in communication with a coprocessor over a high speed interconnect. In addition, an optional display may be provided for displaying the calculated flow field. The system and method include porting variables of governing equations from a CPU to a coprocessor; receiving calculated source terms from the coprocessor; and solving the governing equations at the CPU using the calculated source terms. In a further aspect, the CPU compresses the governing equations into combination of higher and / or lower order equations with fewer variables for porting to the coprocessor. The coprocessor receives the variables, iteratively solves for source terms of the equations using a plurality of parallel pipelines, and transfers the results to the CPU. In a further aspect, the coprocessor decompresses the received variables, solves for the source terms, and then compresses the results for transfer to the CPU. The CPU solves the governing equations using the calculated source terms. In a further aspect, the governing equations are compressed and solved using spectral methods. In another aspect, the coprocessor includes a reconfigurable computing device such as a Field Programmable Gate Array (FPGA). In yet another aspect, the coprocessor may be used for specific applications such as Navier-Stokes equations or Euler equations and may be configured to more quickly solve non-linear advection terms with efficient pipeline utilization.

The invention discloses a small-sized closed horizontal circulating water channel device which is a closed flow circulating channel composed of sections. The top of a test section is open, a bent section of a medium guide section is provided with a medium guide corner rectifier, a bent section of a large guide section is provided with a large guide corner rectifier, and a '#'-shaped cellular rectifier and a net rectifier are arranged between the large guide section and a first contraction section sequentially. A small guide section is provided with a rotary shaft, and the rotary shaft is provided with a propeller at one end. By the structure, the closed horizontal circulating water channel has the advantages that a circulating pipeline flows stably; the water channel is suitable for observation of a flow field and observation of a test model; flow rate of a test section along a cross section is distributed evenly and the speed rate is controllable; speed of advection and speed of turbulence are controllable; and water transparency is high, and a fluid mechanics basic test, a ship maneuverability test, a large-sized algae cultivation method test, observation and shooting of a flowing pattern and the like can be performed.

The invention provides a method of simulating behavior of a flow interacting with an object. The invention improves the accuracy of the approximation of the spatial pth derivative Dp, p≧1, and therefore reduces the cost of the simulation. It includes in the approximation values of the parameter at points which do not lay on grid lines passing through the point of computation P, and by using these values to optimize the approximation. The use of these additional points depends on a preferential direction, such as determined by the advection direction of the flow. The points used in the approximation extend beyond a unit cube on the computational grid. The simulation is in three or more dimensions. The numerical simulation produces output which can be used in the design or optimization of the object which interacts with the flow. In certain cases, it is the output by itself which is important.

The invention is a method of developing a sedimentary basin from a stratigraphic simulation of multilithologic filling accounting for fine sediment transport. The sedimentary basin is broken up into geologic layers with each geologic layer being subdivided into a series of climatic layers. Each climatic layer is associated with at least one constant climatic parameter. A stratigraphic simulation is performed within each climatic layer using a stratigraphic model. The sediment transport in the continental domain and sediment bottom layer transport in the marine and lacustrine domains are modelled using nonlinear diffusion equations under maximum erosion rate constraint. Suspended sediment transport in the marine and lacustrine domain is modeled using an advection-diffusion equation accounting for a particle fall rate and of a marine and lacustrine current velocity. The climatic layers belonging to a single geologic layer are then homogenized and the basin is developed according to the stratigraphic simulation results.

The invention relates to a self-support fracture testing and analyzing device and method for oil-gas field development. The device is mainly composed of a fluid storage tank, an advection pump, a pretreated working fluid tank, a reverse mold fluid tank, a flow conduction chamber, a displacement sensor, a hydraulic press, a fracture maker, a back-pressure controller, a collected fluid bottle, a data acquisition and control board and a computer. The method comprises the following steps: naturally breaking a rock core into two rock plates; putting the rock plates into the inner cavity of the flow conduction chamber to form a self-support in-fracture fluid flow region; applying an initial pressure so that the in-fracture fluid flow region is fully filled with the testing fluid; pretreating the in-fracture fluid flow region; starting the computer, inputting experimental parameters, and injecting the testing fluid; acquiring self-support fracture flow conductivity; treating the in-fracture fluid flow region again; and driving the reverse mold fluid into the flow conduction chamber to form a reverse mold casting. The invention can simulate the actual situation of the self-support fracture to acquire accurate flow conductivity test data, and can also acquire the flow form of the self-support in-fracture fluid.

The present invention provides a floatable conveying type substrate handling device. Looking in conveying direction (X direction), setting a plurality of rollers or profile rollers (110) with certain distance in a line along conveying direction on two sides of a platform (80). On the platform (80), the basal plate (G) floats in the air using the pressure of gas obtained from the just subjacent ejecting mouth (100) on the platform, and the two ends of the two sides are loaded on the top of the profile roller (110). By means of the rotation motion of the profile roller (110), the basal plate (G) floated on the platform (80) is tossing to convey on the profile rollers (110) and moves towards conveying direction (X direction) in advection mode.

The present invention is directed towards systems and methods for simulating and analyzing viscoelastic fluid flow. The fluid flows through a channel and is ejected from a channel. The fluid has an interface between a first fluid and a second fluid. The method includes performing finite difference analysis and using a level set projection method to solve equations governing the viscoelastic flow of the fluids through the channel. The equations governing the viscoelastic flow include an azimuthal velocity term that is an approximate description of the azimuthal flow of the fluid. The equations governing the viscoelastic flow also include an approximation of the stress experienced by the fluids being simulated. The equations governing the viscoelastic flow include an advection term that includes an azimuthal velocity term. The finite difference analysis used to solve the governing equations includes a second-order Godunov type upwind scheme to update the advection terms over time. The level set for the first and second fluids is updated periodically during the simulation.

A system and method for shallow water simulation may provide a framework for solving General Shallow Wave Equations (GSWE) to efficiently simulate 3D fluid effects on arbitrary surfaces using a height field representation. The height field representation may include height columns constructed along surface normals, which may be dependent on a condition of boundary cells adjacent to fluid cells and / or artificial viscosity effects. The framework may provide implicit schemes for solving for the effects of external forces applied to the fluid, including gravity and surface tension, and explicit schemes for solving for advection effects. The system and method may be implemented on general-purpose CPU(s) and / or GPU(s) and may be capable of simulating a variety of fluid effects including: waves, rivulets and streams, drops, and capillary events. In some embodiments, the system and method may achieve real-time fluid control and fluid shape design through user-interaction (e.g., in a graphical painting application).

The present invention relates to a neutralizing agent for treating acid waste water produced by cold-rolling process in metallurgical industry and its technological method. The neutralizing agent is a magnesium system material containing soft-burned magnesium powder oversize which is pulverized into 100-140 meshes by using Raymond mill, electrofused magnesium dust-removed ash, soft-burned magnesium powder and MgO whose content is above 40%. Its technological process includes the following steps: 1. supplying waste acid water into pre-aeration pool and executing aeration; 2. supplying the aerated acid water into neutralizing pool; 3. supplying neutralizing agent into neutralizing tower; 4. neutralizing reaction including three modes: mixing and aerating, mechanical mixing and single aeration; 5 advection pool deposition; 6. sludge and water separation treatment. The invention provides a neutralizing agent which can directly generate economic benefit, save investment, use low operation cost, and is simple in device structure, easy in operation management, has broad neutralizing agent source, and uses three waste resources to treat waste, and cancels the new water consume in lime cream and realizes the reuse for reclaimed water a technological method and a device thereof.

The invention relates to a microfluidic chip with oil-water demulsification and separation under an electric field / interface synergistic effect and a preparation method thereof. Microstructures and microchannels are arranged on the surface of the microfluidic chip; the hydrophilic modification and the oleophylic modification are implemented on the left sides and the right sides of the microchannels respectively; under the driving of an external peristaltic pump, oil-water mixed solution enters a demulsification area which is provided with microstructures on the surface; the demulsification is implemented for the oil-water mixed solution under the electric field effect; water moves to the hydrophilic sides; oil moves to the oleophylic sides; the oil-water mixture not totally separated from each other is circulated to an original feeding area for implementing the secondary demulsification and separation; and finally, the oil-water separation is achieved. The microfluidic chip is mainly applied in the related fields, such as oil of transformers, turbine oil of power stations, treatment of sea crude oil leakage accidents, failed oil of oil fields, floating oil of sea drilling well platforms, advection oil of steelworks, a large amount of oil-containing waste water of refineries and the like. The microfluidic chip realizes quick demulsification and quick separation of the oil-water mixed solution, has the characteristics of portability, economy, quickness and high efficiency, and provides a brand new analysis technology for the oil-water separation field.

Embodiments of the present invention provide a novel method and discretization for animating water waves. The approaches disclosed combine the flexibility of a numerical approach to wave simulation with the stability and visual detail provided by a spectrum-based approach to provide Eulerian methods for simulating large-scale oceans with highly detailed wave features. A graphics processing unit stores a one-dimensional texture referred to as a wave profile buffer that stores pre-computed results at a number of discrete sample points for performing wave height evaluation. The water surface is rendered according to water height values computed using the wave profile, accounting for advection, spatial diffusion, angular diffusion, boundary reflections, and dissipation.

A method and device for fuel cell heat and water management is provided. A thermally and electrically conductive hydrophilic heat and mass transport element is provided to the fuel cell spanning from inside to outside the cell. The transport element is deposited between current collector and gas diffusion layers, where heat is transported along the transport element from an interior portion of the element inside the cell to an exterior portion of the element outside the cell. Liquid water is transported along the element into or out of the cell, and heat is removed from the exterior portion by any combination of radiation, free convection and forced convection, and where the liquid water is removed from the exterior portion by any combination of convection driven evaporation and advection. The water is added to the cell from the exterior to the interior by any combination of advection and capillary wicking.

Methods for vessel segmentation and tracking using 7D MRI flow image data incorporate information from the velocity field and the magnitude. A vessel tracking methods selects a time containing sufficient blood flow through a vessel, uses the magnitude image to determine the vessel boundary and uses the velocity image to define the vessel direction. A method for segmenting tubular and circular objects segments the objects into separate vessels and then uses the velocity data to reunite the objects, where touching components are evaluated by the velocity field where they are connected. If vectors point towards the other component, the two components are reconnected. An advection-diffusion method based on fluid dynamics performs a fluid dynamics simulation with image forces according to the Navier-Stokes equations. With the 7D data, the vector field is available from the flow data, from the time point at which maximal flow occurs in the vessel of interest.

The invention relates to a multifunctional dynamic pollution evaluation device of coalbed drilling fluid, belonging to the technical field of damage evaluation of coalbed methane drilling fluid. The multifunctional dynamic pollution evaluation device comprises a gas booster pump, a triaxial stress coal core gripper, a measuring axial-loading pump, a gas mass flow meter, a computer acquisition board, a mud container, an oven, a precise advection pump, and the like; wherein the gas booster pump is arranged at the left side of the oven; a gas storage tank, the precise advection pump, the measuring axial-loading pump and the gas mass flow meter are arranged at the lower part of the oven; and the triaxial stress coal core gripper and the mud container are arranged in a working space of the oven. The evaluation device can not only simulate the invasion, the invasion depth and the invasion degree of the drilling fluid to a coal bed under the condition of coalbed true triaxial stress, but also simulates the dynamic pollution process of mud in positive differential pressure, negative differential pressure and balanced drilling process and ensures that the coalbed pollution process is integrated with the percolation test process. The invention solves the problem that the conventional evaluation device can not load different axial loads on three axial directions and has the advantages of convenient operation and standardized experimental data.

The invention discloses a method for calculating effect of traffic flow on city pollution. The effect on the city pollution is calculated according to the vehicle shape of the traffic flow; 1) fast identifying the sizes of vehicles, wherein the sizes of the vehicles are classified by the classification technology based on the under color of a license; the vehicle of which the under color of the license is blue is a car and the vehicle of which the under color of the license is yellow is a cart; 2) after determining the size of the vehicle according to the under color of the license, setting the emission factors according to the speeds of the vehicles; 3) turning the factors into the identified or given different emission indexes of the vehicles to generate the concentration of exhaust dust and carbon monoxide (CO) of a road; and performing difference approximation on each road region to calculate concentration by taking an advection equation as a pollution model ; and 4) defining the concentration of the exhaust dust according to the transmission of inertia light,; performing conversion on the transmission (VI%) of 100m distance by natural logarithm; and calculating the CO concentration in PPM.

A described exemplary embodiment of the present invention includes a computational “toolbox” for the a priori design of optimized fluidic components. These components consist of a channel under low-Reynolds number, pressure-driven flow, with an arrangement of grooves cut into the top and / or bottom to generate a tailored cross-channel flow. An advection map for each feature (i.e., groove of a particular shape and orientation) predicts the lateral transport of fluid within the channel due to that feature. We show that applying these maps in sequence generates an excellent representation of the outflow distribution for complex designs that combine these basic features. The effect of the complex three-dimensional flow field can therefore be predicted without solving the governing flow equations through the composite geometry, and the resulting distribution of fluids in the channel is used to evaluate how well a component performs a specified task. The generation and use of advection maps is described, and the toolbox is applied to determine optimal combinations of features for specified mixer sizes and mixing metrics.

The invention relates to a true tri-axial hydraulic fracture test machine which comprises a confining pressure system, an injection system and a true tri-axial test stand, wherein the injection system comprises a fracturing solution container I, a fracturing solution container II and a piston container, and a stirring mechanism is mounted in the fracturing solution container II. A test method comprises the following steps: injecting clear water and an additive into the fracturing solution container II according to a certain proportion, and starting the stirring mechanism to stir; injecting a fracturing solution into a cavity body above a piston plate in the piston container by utilizing pressure; respectively applying confining pressures onto three axial directions of a downhole rock core simultaneously through three high-pressure advection pumps; draining into a cavity body under the piston plate in the piston container through a constant-pressure constant-speed plunger pump I and / or a constant-pressure constant-speed plunger pump II; injecting the fracturing solution into the rock core to start to fracture and taking out the downhole rock core after the end of fracturing to observe fracture expansion condition. The true tri-axial hydraulic fracture test machine provided by the invention has the benefits that the technical scheme is simple and easy to understand, the operation is convenient and fast, the unified control of the confining pressure system and the injection system can be realized, and the fracturing solution is convenient to replace.

The invention relates to an advection wind light composite generator and relative application. The invention is characterized in that the generator is vertical axle advection rectangle type or screw blade radiation distributing type, to rotate the main axle via wind rejecter and wind lifter, to operate mechanical speed changer and generation converter to generate electricity via wind. The light generator is dynamic-static battery template incline adjustable photoelectric converter, via solar battery template on beam rectangle or upper and lower faces of screw blade and the reflection of reflective membrane on ground to receive light radiation, to select right incline angle of battery membrane relative to the wind lifting and rejecting via rotation axle and angle fixing element. The invention can realize photoelectric conversion and dynamic-static transmission.

The invention discloses a return air circulation heat drying apparatus. The return air circulation heat drying apparatus comprises a housing, wherein a drying chamber and a heat pump chamber are arranged in the housing; the upper part of the drying chamber is connected to an advection channel; the other end of the advection channel is respectively connected to inlets of a recovery channel and a circulation channel; an outlet of the circulation channel is communicated with the drying chamber; the recovery channel is communicated with an inlet of an air module in the heat pump chamber; and an outlet of the air module is communicated with the drying chamber. According to the design, heat is recovered from the return air and heated to dry the material, thereby reducing material drying time andsaving electricity consumption by 20%.

The invention relates to a method for using micro reactor to prepare micro powder drug, which comprises that dissolving the material drug into organic solvent to prepare the drug solution; then using respective advection pump 2 of material solution and reverse solvent to input them into the micro reactor 3 connected with the pump 2, while the flow speeds of drug solution and the reverse solvent is rated at 1:1-1:80; the micro reactor 3 contains a tube 7 for transmitting drug solution and a tube 7 for transmitting reverse solvent at 0-180 degree corner; the outlets of two tubes 7 have a micro space 8 between; the drug solution and the reverse solvent are mixed at the outlets of tubes 7 to realize the reverse-solvent recrystallization while the recrystallization temperature is -10-50Deg. C, to obtain the recrystallization pulp, to be filtered, washed and dried to obtain the micro powder drug. The inventive method can control the diameter, with narrow granularity distribution, simple process and low cost.

Integrated, sequential stages of nanofiltration, forward osmosis, and reverse osmosis and related membranes provide an Integrated Osmosis structure, systems and methods. By optimally placing and using the desired characteristics of each membrane, performance and cost effectiveness not attainable individually is obtained. Integrated Osmosis systems provide high diffusive and osmotic permeability, high rejection, low power consumption, high mass transfer, and favorable Peclet number, by manipulating convection, advection and diffusion, low concentration polarization gradients, low reverse salt flux and effective restoration of performance after cleaning fouled membranes. Benefits include increased permeate recovery and decreased waste concentrate volume from reverse osmosis processes or other elevated osmotic pressure solutions. Integrated Osmosis first employs nanofiltration for selective harvesting of solutes, proffering a reduced osmotic pressure permeate. Forward osmosis dewaters the lowered osmotic pressure permeate generating a dilute draw solution which serves as feed to a reverse osmosis process. Reverse osmosis permeate provides freshwater and concentrate provides draw solution for the forward osmosis process.

An impeller includes a metal base plate, a shaft and a plurality of plastic blades. The metal base plate includes a shaft-coupling portion, a peripheral portion, and first and second surfaces. The first surface faces away from the second surface in a first direction, the second surface faces away from the first surface in a second direction. The metal base plate is flat between the shaft-coupling portion and the peripheral portion. The first surface has a permanent magnet. The shaft has a fixing end coupled with the shaft-coupling portion, as well as a free end extending axially in the first direction. Each plastic blade has a coupling portion coupled with the peripheral portion, as well as an air-driving portion axially extending in the second direction. The impeller may be rotatably coupled with a driving module. The driving module is installed in a fan frame to form an advection fan.

The invention discloses a compound gas flow generation device and in particular relates to a compound gas flow generation device under mutual action of atmosphere turbulence and laser. The compound gas flow generation device comprises a gas flow generation device main body, a turbulence circulation system, a gas inlet, a multi-light-path system, an optical observation window, a gas parameter sensor and a digital signal processing (DSP) controller. The compound gas flow generation device has multiple turbulence modes, so that gases which are different in gas pressure and components can be simulated, and advection and convection can be simulated; an external cold air and hot air circulation system is adopted, so that the system is relatively high in temperature stability and controllability; furthermore, different air fields are produced through different rotational flow guide devices in the circulation controller, so that a relatively complicated atmosphere turbulence environment can be simulated; an improvement-based Harriet multi-light-path system is adopted, so only one compound gas flow device is needed; when the reflection frequency is more than 500, a light path is more than 500 meters; and the problems of high cost, complexity in use and the like which are caused by cascade are solved.

The invention provides a solar battery comprising a base plate which comprises a p-n doping structure formed in the base plate, back material which is attached on the base plate, and comprises glass mixture, organic medium, aluminized material and additive, wherein the glass mixture comprises Al2O3, Bi2O5, B2O3, SiO2, PbO, Tl2O3 and ZnO, the content of aluminium powder in the material is 60-80%, the degree of purity is about 90-99.99%, the additive comprises stearic acid of C10-C24, whose content is smaller than 5%, the content of the organic medium is about 20-35%, and comprises 60-90%alcohol ether organic solvent, 10-20%cellulose resin and 1-5% advection agent, rheologic agent or thixotropic agent. The solar battery of the invention can improve the bending of the silicon base plate caused by stress.

The invention aims at providing a high efficiency and low energy consumption method and a device for collecting and treating blue algae. The method comprises the following steps that: an advection-type collecting bin which floats on the water surface of a water body of the blue algae and is provided with a water inlet is adopted; through the method of putting the water inlet lower than the water surface of the water body of the blue algae and discharging water in the bottom layer of the advection-type collecting bin, the blue algae floating on the water surface of the water body enters the advection-type collecting bin; and the blue algae in the advection-type collecting bin is sent to an air floating device for coagulation, air floating and drying and other treatment.

The invention relates to a metal heat treatment device and discloses a fuel gas roller hearth continuous rapid aging furnace. The fuel gas roller hearth continuous rapid aging furnace comprises a furnace body and a temperature control system, wherein a plurality of heat treatment units are arranged in the furnace body, and each heat treatment unit comprises a workpiece area, a combustion system and a circulating fan; in each heat treatment unit, an independent combustion chamber is arranged above the workpiece area, the combustion system and the circulating fan are respectively arranged at the left end and the right end of the independent combustion chamber, and the independent combustion chamber is provided with a circulating air inlet and a circulating air outlet; air guide windows are arranged on the left side and the right side of each workpiece area, a plurality of air guide holes are arranged on each air guide window, and air inlet passages and air outlet passages are respectively formed between the air guide windows on the two sides and a furnace chamber; and inner cavities of the independent combustion chambers, air suction ports of the circulating fans, air outlets of the circulating fans, the circulating air inlets, the air inlet passages, the workpiece areas, the air outlet passages and the circulating air outlets sequentially form hot air circulating channels respectively. The fuel gas roller hearth continuous rapid aging furnace disclosed by the invention adopts an advection circulation way and is high in uniformity of furnace temperature, short in path and high in efficiency.

The invention provides a technology for extracting puerarin and a process for making kudzu root beverage. The technology for extracting puerarin adopts an ultrasonic multistage advection contact process to carry out extraction, wherein the contact process is as follows: the second stage and the third stage of a three-stage advection contact process for extracting kudzu root adopt ultrasonic wave to assist the extraction; the process for making kudzu root beverage comprises material selection, pretreatment and precooking; during extraction, the ultrasonic multistage advection contact process is adopted to extract kudzu root; finally, the extract is made into kudzu root beverage after centrifugation. The extracting technology is scientific and reasonable and has short extraction time, good effect and strong operability; when the technology is adopted to make kudzu root beverage, the process of the technology has low requirement on equipment and is easy to control along with strong operability, less energy consumption and low production cost; therefore, the technology is suitable for the large-scale production of kudzu root beverage; moreover, manufactured kudzu root beverage has abundant nutrition, convenient eating and delicious and various tastes; therefore, the technology has tremendous economic benefit.