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采用Roe的FDS(Flux Difference Splitting)差分格式结合min mod,van Leer和Osher-C限制器,对高超声速体外部流场进行数值模拟.研究了限制器对高超声速体气动力/热数值模拟的区别,对比分析了3种限制器对三维模型表面热流数值模拟结果的影响.研究表明,限制器对数值模拟精度有重要影响,且对气动热数值模拟的影响大于对气动力的影响;对简单或较复杂的气动外形,采用Roe的FDS格式结合min mod限制器获得的表面热特性比它结合van Leer和Osher-C限制器时要好,可为热防护设计提供可靠结果.
A Flux Difference Splitting (FDS) difference scheme of Roe was used to simulate the external flow field of hypersonic body combined with the min mod, van Leer and Osher-C limiter.The effects of the limiter on the aerodynamic / thermal numerical simulation of hypersonic body The results show that the limiter has an important influence on the accuracy of numerical simulation and the influence on aerodynamic numerical simulation is greater than that on the aerodynamic force. Or more complex aerodynamic shapes, the surface thermal characteristics obtained with Roe’s FDS format combined with the min mod limiter are better than when it is combined with the van Leer and Osher-C limiters, providing reliable results for thermal protection design.