两相流方柱绕流的离散涡模拟

运用离散涡方法对流体的方柱绕流进行了数值模拟,对涡团与颗粒相互作用条件下的流固两相绕流进行了计算,并探讨了不同初始位置处颗粒运动对尾流的形成所起的作用.研究表明,尾流中聚积的颗粒主要来源于方柱两侧,来流中夹杂的颗粒多与方柱两侧涡团作用并在方柱两侧聚积.模拟方法将对航天领域中非线性剥蚀问题的解决具有促进作用.

DVM Simulation of the Two-Phase Flow Around A Square Column

The discrete vortex method(DVM) was used in a numerical simulation of the flow around a square column,states of two-phase flow were calculated under a interacting mechanism of vortex,and the effects of particles movement on the wake flow were discussed with the different initial positions.As results indicated,the particles in the wake came mainly from the bilateral side of the column while the particles in the front flow interacted with the bilateral vortex and accumulated there.This method is helpful in the research on nonlinear-ablation problem in the aero field.