The flow field of a self-excited precessing jet was numerically simulated and its influence to a heating plate was obtained using Large-Eddy Simulation(LES)model.
本文使用大涡模拟模型对自激励旋进射流的内部流场和冲击平板换热的温度场进行数值模拟,得到了不同进口Re数和不同膨胀比情况下的旋进射流的内部流场和冲击平板的温度场,并在此基础上分析了不同进口Re数和不同膨胀比对换热Nu数的影响。
The results show that:The polygonal wear phenome- non is a typical nonlinear self-excited vibration;the frequency range of self-excited vibration fluctuated according to vehicle types and the status of tire worn.
建立轮胎-悬架-车身系统的考虑时间延迟的轮胎多边形磨损动力学模型,探讨基于自激励振动理论的轮胎多边形磨损现象。