【摘要】 利用时空守恒元解元(CE/SE)算法求解二维无量纲非稳态可压缩Navier-Stokes方程,将CE/SE算法应用于二维平板内驻波声流的计算,对求解出的流场与理论近似解作对比分析,在此基础上通过对比自然对流换热来研究驻波声流对二维平板内对流换热的影响。分析结果,CE/SE算法能很好的计算出声流流场,计算得到的声流流场与理论近似解相吻合,同时得到了声流流场下的温度场。结果表明了驻波声流能明显的加快对流换热,有效的降低流场中的热量。更多还原

【Abstract】 Based on the CE /SE method,the procedures were used for solving the 2-D Non-dimensional unsteady compressible Navier-stokes equation,the CE / SE method was applied to computation of the standing wave acoustic streaming in a two-dimensional flat plate. The correctness of the CE / SE method is verified by the comparative analysis of the calculated acoustic streaming and the theoretical approximate solution. On this basis,the influence of standing wave acoustic streaming on the convective heat transfer in a two-dimensional flat plate is studied by comparing the natural convection heat transfer. The results show that the calculated acoustic streaming is in agreement with the theoretical approximate solution. In other words,the CE / SE method can perfectly calculate acoustic streaming. By analyzing the temperature field in the acoustic streaming field,the results show that the standing wave acoustic streaming can obviously accelerate the convective heat transfer,and effectively reduce the heat in the flow field.更多还原