【摘要】 发展高精度的高阶谱方法,通过抛物化稳定性方程及其局部法,研究在压力梯度作用下的非平行流边界层稳定性问题。与经典的平行流边界层稳定性结果相比,显示了在某些条件下非平行性对稳定性的关键作用。提出了压力梯度对临界雷诺数的影响研究,探讨了不同压力场对流动稳定性作用的规律性更多还原

【Abstract】 The spectral collocation method for the high accuracy with the high order is developed. The problems of non-parallel boundary layer stability under a function of the pressure gradient are studied by the parabolic stability equation (PSE) and the local method. The key function of the non-parallelism under some conditions is shown by the comparison of the results from the classical stability problem of the parallel flow. The effect of the pressure gradient on critical Reynolds number is also displayed and the influence rule of the different pressure fields on the flow stability is exploited.更多还原