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限制器对高超声速体表面热流数值模拟的影响

DOI: 10.13700/j.bh.1001-5965.2013.0253, PP. 417-421

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Abstract:

采用Roe的FDS(FluxDifferenceSplitting)差分格式结合minmod,vanLeer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minmod限制器获得的表面热特性比它结合vanLeer和Osher-C限制器时要好,可为热防护设计提供可靠结果.

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