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Air flow simulating method based on physical simulation and system thereof

A technology of airflow simulation and physical simulation, applied in the field of airflow simulation method and system based on physical simulation, to achieve the effect of large expressive ability and real simulation effect

Active Publication Date: 2009-09-23
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An efficient method for modeling and simulating both gases simultaneously does not yet exist

Method used

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  • Air flow simulating method based on physical simulation and system thereof
  • Air flow simulating method based on physical simulation and system thereof
  • Air flow simulating method based on physical simulation and system thereof

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Embodiment Construction

[0028] The airflow simulation method and system based on physical simulation proposed by the present invention are described as follows in conjunction with the accompanying drawings and embodiments.

[0029] In this embodiment, the particle system simulates the relationship between particles scattered in space through certain physical characteristics, and then interacts with the environment to simulate gas

[0030] Such as figure 1 As shown, the airflow simulation method includes the following steps:

[0031] S1. Obtain the current position and velocity of the particle by solving the smooth hydrodynamic equation;

[0032] S2. Convert the low-speed particles to the grid model, and convert the high-speed particles to the temporary grid model; that is, modeling to clearly define how the particles should be represented, that is to say, the function of this step is to make the particles move with specific motion rules ;

[0033] S3. Solve the grid model and its corresponding par...

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Abstract

The invention relates to an air flow simulating method based on physical simulation. The method converts low-speed particles into a grid model by solution of the traditional particle model, and simultaneously transfers high-speed particles to a temporary grid model while solving, and finally outputs grid model results and density field superposed by the temporary grids and renders. The invention also provides an air flow simulating system based on physical simulation. The method and the system thereof can effectively carry out simulation requirements of air containing low-speed and high-speed air simultaneously and can provide greater expression capability and more real simulation effect.

Description

technical field [0001] The invention relates to the technical field of realistic graphics rendering, in particular to a physical simulation-based airflow simulation method and system thereof. Background technique [0002] Photorealistic rendering is the core technology in important application fields such as game software development and scientific data visualization. As an important material form, the physical simulation and modeling of gas is an important content of realistic rendering. In the field of gas physics simulation, traditional methods are usually divided into grid-based methods and particle-based methods according to the different properties of the fluid. [0003] Grid-based methods have shown their effectiveness in work on low-velocity airflow simulations. Jos Stam invented a fluid simulation method based on grid model in 1999. An important basic assumption of this invention and many subsequent improved methods (such as the method proposed by Fedkiw et al. i...

Claims

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Application Information

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IPC IPC(8): G06T15/70G06T17/00G06T15/00
Inventor 胡事民高岳
Owner TSINGHUA UNIV
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