| 用Richardson外推法分析流动传热层流问题的不确定度 |
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| 引用本文： | 屠珊,孙弼,毛靖儒.用Richardson外推法分析流动传热层流问题的不确定度[J].西安交通大学学报,1999,33(11):47-50,85. |
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| 作者姓名： | 屠珊 孙弼 毛靖儒 |
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| 作者单位： | 西安交通大学,710049,西安 |
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| 摘 要： | 用ＳＩＭＰＬＥＣ算法计算了流动传热问题中２个有基准解的层流问题。对于２阶精度中心差分格式的２套网格数值解，用Ｒｉｃｈａｒｄｓｏｎ外推法可以得到４阶精度的解、其工作量比直接求解４阶差散方程的工作量减少许多；对于计算中的数值不确定度，用该方法分析了离散误差，并用逐次加密网格的方法探讨了外推法的合理性。
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| 关 键 词： | 不确定度 流动传热 层流 Richardson外推 |
Uncertainty Analysis of Laminar Flow and Heat Transfer Problems by Richardson Extrapolation |
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| Tu Shan,Sun Bi,Mao Jingru.Uncertainty Analysis of Laminar Flow and Heat Transfer Problems by Richardson Extrapolation[J].Journal of Xi'an Jiaotong University,1999,33(11):47-50,85. |
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| Authors: | Tu Shan Sun Bi Mao Jingru |
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| Abstract: | Two problems in laminar flow and heat transfer are evaluated by using the SIMPLEC algorithm. Fourth precision solution can be derived from two grid sets solution with a second precision central difference scheme by Richardson extrapolation. It reduces the amount of calculation. Uncertainty is determined from the discretization error analysis. A finer grid calculation is made to validate the extrapolation scheme. |
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| Keywords: | N-S equations benchmark solution error uncertainty |
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