| 复杂几何域中不可压流动的多重网格计算 |
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| 引用本文： | 侯凌云,严传俊.复杂几何域中不可压流动的多重网格计算[J].航空动力学报,1998,13(3):246-249,344. |
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| 作者姓名： | 侯凌云 严传俊 |
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| 作者单位： | 西北工业大学 |
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| 摘 要： | 本文首次将多重网格中的全近似格式ＦＡＳ用到一般曲线坐标系下交错网格布局的ＳＩＭ－ＰＬＥＣ算法中，采用三个流动结构：渐扩平面通道、收扩管流和轴对称弯曲管流作为算例，通过与单网格在不同Ｒｅ数、不同网格点数和不同几何结构上的迭代性能的对比，证明多重网格克服了曲线坐标系下单网格ＳＩＭＰＬＥＣ算法的不足，大大提高收敛速度，节省ＣＰＵ时间。
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| 关 键 词： | 不可压缩流动 气动力计算 曲线坐标 收敛 |
| 收稿时间： | 9/1/1997 12:00:00 AM |
| 修稿时间： | 1997/10/1 0:00:00 |
A MULTIGRID COMPUTATION OF INCOMPRESSIBLE FLOW IN COMPLEX GEOMETRIES |
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| Hou Lingyun and Yan Chuanjun.A MULTIGRID COMPUTATION OF INCOMPRESSIBLE FLOW IN COMPLEX GEOMETRIES[J].Journal of Aerospace Power,1998,13(3):246-249,344. |
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| Authors: | Hou Lingyun and Yan Chuanjun |
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| Abstract: | A procedure using a Full Approximate Scheme (FAS) multigrid is developed in SIMPLEC algorithm with a layout of staggered grid in generalized curvilinear coordinates.This method is applied to three flow problems as test tasks.The comparison between the iteration performance of the Multi-Grid (MG) and Single-Grid (SG) methods in different grid sizes,Reynolds number and geometries demonstrates that the multigrid method improves convergence rate,reduces CPU time,and overcomes the deficiency of single-grid SIMPLEC algorithm in generalized curvilinear coordinates. |
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| Keywords: | Incompressible flow Aerodynamic computation Curvilinear coordinates Convergence |
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