超声速边界层转捩预测e^N方法及其软件开发

Transition prediction e^N method and its software development for supersonic boundary layers

首先论述了边界层转捩预测的研究现状,总结了目前三种边界层转捩预测方法的优缺点,重点从理论方面和工程应用方面分析了现有转捩预测eN方法及其预测软件的不足,展望了未来转捩预测方法和预测软件的发展趋势,然后结合工程应用的需要,提出了面向工程的基于转捩预测eN方法的超声速边界层转捩预测软件的实现途径。在对现有转捩预测eN方法进行不断改进和完善的基础上,结合流动稳定性分析和转捩工程应用方面的经验,建立特征值、感受性系数、转捩判据等一系列知识库,有望开发一套实用、全自动、高效、用户接口友好的面向工程的超声速边界层转捩预测软件。

Research status of boundary layer transition prediction is reviewed at first;the advantages and disadvantages of the present three kinds of boundary layer transition prediction methods are summarized;from the aspects of theoretical and engineering application,the shortcomings of existing transition prediction eN method and its transition prediction software are emphatically analyzed,and the development trend of the future transition prediction method and its software is forecasted;then from the point of view of engineering application,an implementation approach of engineering oriented transition prediction software based on transition prediction eN method for supersonic boundary layer is put forward.By continuously improving and perfecting the traditional transition prediction eN method,combining with the experience of flow stability analysis and transition engineering application,setting up a series of knowledge databases of eigenvalue,receptivity coefficient and transition criterion,it is expected to develop a practical,fully automatic,highly efficient,friendly user interface and engineering oriented software of transition prediction for supersonic boundary layers.