| 低耗散高可信度格式及其在气动力热计算中的应用 |
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| 引用本文： | 黎作武. 低耗散高可信度格式及其在气动力热计算中的应用[J]. 空气动力学学报, 2009, 27(Z1) |
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| 作者姓名： | 黎作武 |
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| 作者单位： | 中国空气动力研究与发展中心国家计算流体力学实验室,北京,100191 |
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| 基金项目： | 国家自然科学基金，创新基金群体 |
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| 摘 要： | 本文简要介绍了TVD类型格式中近似黎曼解的耗散机理,该耗散机制对于粘性问题的计算有较大的负面影响.通过引入低耗散的格式,所发展的数值方法对粘性流场的气动力热问题的计算具有较高的精度.以该数值方法为基础发展的软件系统,在亚跨超和高超声速领域中的气动力热问题上均得到了验证,计算结果与实验进行了对比验证,表明该计算软件系统具有较高的可信性.
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| 关 键 词： | 计算格式 数值模拟 气动力 气动热 |
Low-dissipation-high-credibility scheme for computation of aerodynamic force and heating |
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| LI Zuo-wu. Low-dissipation-high-credibility scheme for computation of aerodynamic force and heating[J]. Acta Aerodynamica Sinica, 2009, 27(Z1) |
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| Authors: | LI Zuo-wu |
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| Abstract: | In present paper, the dissipative mechanism in TVD -type schemes is analyzed to be responsible for severe smearing of viscous boundary layer. The dissipation is introduced through the approximate Riemann solver, and could be minimized with exact Riemann solution. Combined with the exact Riemann solver, numerical software is developed on multi - block grid system to solve the aerodynamic force and heat around several three - dimensional configurations. The comparison with experiment shows excellent agreement and validates the numerical methods and software. |
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| Keywords: | high resolution scheme numerical simulation aerodynamic force aerodynamic heating |
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