考虑热传导与动态黏度的真实感流体仿真

摘要

For heat conduction in fluid simulation,this paper introduces a discrete heat conduction and variable viscosity model to simulate the dynamics and phase transition of fluid.First,based on smoothed particle hydrodynamics,we model the heat conduction discretely in the fluid body and on the interfaces between fluid and solid.Then we present the details of the fluid dynamics through variable viscosity.Finally,parallel processing in GPU is used to improve the efficiency of our method and simulate the heat conduction and viscosity change of fluid under different circumstances.The experimental results show that our method can simulate the phenomena in real world realistically and efficiently.%针对流体仿真过程中的热传导现象,引入离散的热传导模型与动态黏度的计算,提出对流体运动及相变过程进行真实感仿真的方法.首先基于光滑粒子流体动力学模型,对流体内部及流体与外界的热传导过程进行离散建模;然后通过计算动态黏度来表达流体运动过程中的细节;最后利用GPU将算法并行处理以提升整体效率,实现了不同情况下流体与外界的热传导、黏度变化及仿真.仿真结果表明,该方法可以真实、高效地反映现实场景中的现象.