基于粒子系统的湍流燃烧火焰的可视化研究

引入粒子系统作为可视化建模的基本方法，建立了包含火焰粒子子模型、湍流流场子模型和燃料属性子模型的湍流燃烧火焰可视化模型．通过将温度场与湍流流场的有机结合及燃烧室内网格体单元的颜色与透明度的显示，实现了湍流燃烧火焰的三维动态传播可视化．最后，结合实例给出了火焰效果图，体现了湍流涡对火焰前锋面的影响．

Visualization of Turbulent Combustion Flame Based on Particle System

The purpose of this study is to realize the dynamic simulation of turbulent combustion flame, and as a result of this study, a three-dimensional visualization model of flame using particle motion animation is presented. The model is composed of flame particle sub-model, turbulent flow sub-model, and fuel property sub-model. A physical relation is established between the turbulent flow and the particle motion, where the flow field is integrated with the temperature field. The temperature field of a combustion chamber is displayed by a rendering of color and transparence of triangular meshes. It clearly shows that the flame front surface is deeply affected by the turbulent swirl by applying the model to the combustion flame of a natural gas engine.