Drag prediction and decomposition based on CFD computations
Drag prediction and decomposition based on CFD computations
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DOI：
10.1299/jsmeb.48.235
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发表时间：
2005-05
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影响因子：
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通讯作者：
Wataru Yamazaki;K. Matsushima;K. Nakahashi
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文献类型：
--
作者：
Wataru Yamazaki;K. Matsushima;K. Nakahashi
本文将基于动量守恒原理的先进阻力预测方法应用于CFD计算结果。这些方法可以将总阻力分解为波浪阻力、粘性阻力、诱导阻力以及由数值计算产生的假阻力。因此，通过消除虚假阻力项，可以更精确地预测阻力。计算结果表明，改进的方法具有良好的阻力预测能力和有意义的阻力分解精度。还发现，预测的物理阻力值是弱依赖于网格质量。
In this paper, advanced drag prediction methods based on the momentum conservation theorem were applied to CFD computational results. These methods can decompose total drag into drag components such as wave, viscous and induced drag as well as spurious drag attributed to numerical computations. Hence the more accurate drag prediction is possible by the elimination of the spurious drag term. The computational results showed that the advanced methods had the good capability of drag prediction and meaningful drag decomposition with accuracy. It was also found that the predicted physical drag values were weakly dependent on the mesh quality.