等离子体流动分离控制的数值模拟

摘要

One simplified model for plasma actuator was present. Further simulation of this model and the effectiveness of the plasma actuator was studied based on the simulation of flow over circle and NACA 0015. The effect of the flow control depends on the location of the plasma actuator and its intensity. Leading edge of NACA 0015 is proved to be the best choice for the flow control.%采用Shyy等提出的等离子体激励器对流动施加体积力的简化模型,测试了激励器对圆柱绕流分离的控制效果.研究了激励器对于大迎角下NACA 0015翼型流动分离的控制情况.数值结果表明:前缘是施加激励作用的最佳位置;当激励器处于最佳激励位置时,对NACA 0015翼型施加等离子体激励能有效的抑制流动的分离.在所研究的范围内,施加的激励强度越大,控制效果越好.结果表明:该方法对于流动分离的控制效果显著,达到了增升减阻的目的.