Drag prediction, decomposition and visualization in unstructured mesh CFD solver of TAS‐code
Drag prediction, decomposition and visualization in unstructured mesh CFD solver of TAS‐code
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DOI：
10.1002/fld.1643
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发表时间：
2008-06
影响因子：
1.8
通讯作者：
Wataru Yamazaki;K. Matsushima;K. Nakahashi
中科院分区：
文献类型：
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作者：
Wataru Yamazaki;K. Matsushima;K. Nakahashi
采用阻力分解方法，对日本东北大学空气动力学模拟程序TAS（Tohoku University Aerodynamic Simulation）中非结构网格CFD求解器的阻力预测精度进行了研究。阻力分解法将总阻力分解为波阻、剖面阻力、诱导阻力和伪阻力，伪阻力是由数值扩散和误差引起的。采用阻力分解法进行网格分辨率分析。采用阻力分解法研究了改进的非结构网格U-MUSCL格式的重构效果。计算结果表明，阻力分解方法可靠地预测阻力，并能够有意义的阻力分解。通过消除总阻力中的虚假阻力分量，提高了阻力预测的准确性。它也证实了物理阻力分量几乎是独立的网格分辨率和方案修改。版权所有© 2007约翰威利父子有限公司。
The accuracy of drag prediction in unstructured mesh CFD solver of TAS (Tohoku University Aerodynamic Simulation) code is discussed using a drag decomposition method. The drag decomposition method decomposes total drag into wave, profile, induced and spurious drag components, the latter resulting from numerical diffusion and errors. The mesh resolution analysis is conducted by the drag decomposition method. The effect of an advanced unstructured mesh scheme of U‐MUSCL reconstruction is also investigated by the drag decomposition method. The computational results show that the drag decomposition method reliably predicts drag and is capable of meaningful drag decomposition. The accuracy of drag prediction is increased by eliminating the spurious drag component from the total drag. It is also confirmed that the physical drag components are almost independent of the mesh resolution and scheme modification. Copyright © 2007 John Wiley & Sons, Ltd.