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| Compressible inviscid flow computation on a hovering rotor based on high order accuracy and high efficiency with schemes |
| Received:May 02, 2014 Revised:August 17, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201504013 |
| KeyWord:rotor compressible flow Euler equations high order accurate method high effective method |
| Author | Institution |
| 徐丽 |
上海交通大学 数学系, 上海 ;上海电力学院 数理学院, 上海 |
| 张开军 |
上海电力学院 数理学院, 上海 |
| 吴泉军 |
上海电力学院 数理学院, 上海 |
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| Abstract: |
| An implicit finite volume method with high-order accuracy and great efficiency is developed to capture complex flow phenomena on a helicopter rotor in hover.A fifth-order Weighted Essentially Non-oscillatory (WENO) is used to reconstruct the left and right states of convective flux of Euler governing equations.To improve efficiency,the use of a class of lower-upper symmetric Gauss-Seidel (LU-SGS) implicit algorithm in conjunction with three-level V-cycle multigrid relaxation schemes is explored.Considering building idea of multigrid and fifth-order WENO scheme involving six cells,it is proposed that WENO scheme is only executed in the finest grid.The results reveal that the present scheme has great capabilities in capturing shock and wake.The multigrid scheme with the implicit LU-SGS method can substantially improve computational efficiency. |