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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >COMPARISON OF EULER AND MODIFIED TSP SOLUTIONS FOR UNSTEADY TRANSONIC FLOW CALCULATIONS
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COMPARISON OF EULER AND MODIFIED TSP SOLUTIONS FOR UNSTEADY TRANSONIC FLOW CALCULATIONS

机译：非稳态跨音速流计算的EULER和修正的TSP解决方案的比较

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摘要

Many prediction methods have been developed for the transonic flow calculations, most of them solve the Euler equations. The solution of Euler equations is usually complex and takes long computer time. However, in many practical applications, viz, flutter calculation faster transonic flow calculation is preferred. One such approach is based on modified transonic small perturbation (TSP) theory approach. Here in this paper modified TSP theory incorporating entropy and vorticity effects has been studied by comparing the results with those of Euler equations. The paper presents the description of both the Euler solver and the TSP solver incorporating entropy vorticity effects. The calculated results have been compared with the available experimental results or with available Euler results from literatures. The comparison shows good agreement with the experimental data as well as available data from open literature. The modified TSP code provides acceptable accuracy for most transonic flow calculations. Thus in most cases long computation involved in Euler code can be avoided.
机译：对于跨音速流计算，已经开发了许多预测方法，其中大多数方法可以求解Euler方程。欧拉方程的解通常很复杂，并且需要很长时间。但是，在许多实际应用中，首选颤振计算更快的跨音速流计算。一种这样的方法是基于改进的跨音速小扰动（TSP）理论方法。在本文中，通过将结果与欧拉方程的结果进行比较，研究了结合了熵和涡度效应的改进TSP理论。本文介绍了结合熵涡度效应的Euler解算器和TSP解算器。计算结果已与可用的实验结果或文献中的可用欧拉结果进行了比较。比较显示与实验数据以及公开文献中的可用数据有很好的一致性。修改后的TSP代码为大多数跨音速流量计算提供了可接受的精度。因此，在大多数情况下，可以避免欧拉代码中涉及的长时间计算。

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