A Method for Mixing Simulation of Porous Media and Multiphase Fluids Using Virtual Particle Phases

A multiphase fluid and porous media technology, applied in design optimization/simulation, instrumentation, calculation, etc., can solve problems such as the inability to deal with multiphase fluid and porous material co-simulation in general, and achieve a unified model that is flexible, stable, and of high quality Consistent effect with momentum transfer

Active Publication Date: 2022-05-27
NANKAI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current particle method simulation technology cannot generally deal with the joint simulation of multiphase fluid and porous material, and proposes a novel fluid simulation algorithm based on virtual particle phase, which is used for porous media materials and multiphase materials. joint dynamics simulation

Method used

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  • A Method for Mixing Simulation of Porous Media and Multiphase Fluids Using Virtual Particle Phases
  • A Method for Mixing Simulation of Porous Media and Multiphase Fluids Using Virtual Particle Phases
  • A Method for Mixing Simulation of Porous Media and Multiphase Fluids Using Virtual Particle Phases

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Embodiment 1

[0114] The present invention provides a method for mixing simulation of porous media and multiphase fluids using virtual particle phases. According to the theory introduced above, the method of the present invention can organize and write an algorithm program according to the following steps, and then run the algorithm program to implement actual simulation. The execution steps of the program algorithm are as follows:

[0115] Step 1: Initialize the particle properties of the fluid scene, including position, speed, whether the particle type is a solid particle or a liquid particle, and if it is a liquid particle, the volume fraction of each phase it contains;

[0116] After initialization, in the computation of each time step,

[0117] Step 2: Calculate the density ρ of all solid particles using standard SPH interpolation s,i and the density ρ of the liquid particles f,i ;

[0118] Step 3: Calculate the N of the liquid particles f , that is, the sum of the general SPH ker...

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Abstract

A method for the mixed simulation of porous media and multiphase fluids using virtual particle phases, using virtual particle phases to calculate the absorption phases of solid external fluids and internal fluids, and then calculate the mass and momentum transfer between different phases, and based on SPH method gets discretized implementation. In this method, the internal and external fluids are uniformly modeled using the volume fraction and the mixing model, which avoids constant particle deletion and insertion, realizes the real solid-fluid mixing simulation effect, and provides an artistic control scheme, for porous media and The efficiency and effect of fluid mixing simulation are comparable to the effect of current industry-leading methods.

Description

technical field [0001] The invention relates to the field of computer graphics fluid dynamics simulation, in particular to a dynamic simulation method and system for porous solid media and multi-component fluids. Background technique [0002] Research work on porous media is ongoing in many areas of computer graphics, such as computer graphics work involving cloth, sand or soil, and volumetric solids. Porous media are different from impermeable solids that only interact with the fluid on the surface. When the fluid acts, the porous media exhibits stronger coupling, and the interaction with the fluid occurs on the surface and inside of the medium at the same time. These flow phenomena are far more complex than single-phase fluid flows in open spaces, and they may involve many simultaneous physical processes, such as fluid mass transfer in porous solids, absorption and emission at solid surfaces, hydrophobic and hydrophilic behavior, capillary effects and multiphase flow. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/25G06F30/28G06F113/08G06F119/14
CPCG06F30/28G06F30/25G06F2113/08G06F2119/14
Inventor 任博徐奔李晨锋
Owner NANKAI UNIV
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