| 基于重叠网格技术和多重网格算法的悬停旋翼粘性绕流数值模拟 |
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| 引用本文： | 杨爱明,刘金花,翁培奋.基于重叠网格技术和多重网格算法的悬停旋翼粘性绕流数值模拟[J].空气动力学学报,2009,27(1). |
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| 作者姓名： | 杨爱明 刘金花 翁培奋 |
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| 作者单位： | 上海大学,上海市应用数学和力学研究所,上海,200072 |
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| 基金项目： | 上海市重点学科建设项目，上海市高等学校青年科学基金 |
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| 摘 要： | 发展了一种基于重叠网格的多重网格算法,并应用于悬停旋翼粘性绕流的Navier-Stokes方程数值模拟.多重网格算法在重叠网格上实施主要面临如下两个问题:粗网格间几何关系的建立,即洞单元、边界单元的确定;洞边界存在的情况下如何进行粗细网格间流场信息的传递.本文针对以上问题给出了相应的解决方案.采用两层网格的V循环,应用有限体积法对一跨声速悬停旋翼粘性流场进行了数值计算.计算结果表明该多重网格方法可以显著加快悬停旋翼粘性流场数值解收敛速度,加速比约为3.
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| 关 键 词： | 重叠网格 多重网格 旋翼 Navier-Stokes方程 |
Navier-Stokes computation about a helicopter rotor in hover using chimera grids and multigrid acceleration |
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| YANG Ai-Ming,LIU Jin-hua,WENG Pei-fen.Navier-Stokes computation about a helicopter rotor in hover using chimera grids and multigrid acceleration[J].Acta Aerodynamica Sinica,2009,27(1). |
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| Authors: | YANG Ai-Ming LIU Jin-hua WENG Pei-fen |
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| Institution: | Shanghai University;Shanghai Institute of Applied Mathematics & Mechanics;Shanghai 200072;China |
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| Abstract: | An effective multigrid method is presented for accerlerating the Navier-Stokes solution of a helicopter rotor in hover using chimera technique.Because of the periodic nature of the flow for hovering rotors,calculations are performed only for a single blade of the rotor,and the periodic boundary condition is applied between the blades.Chimera grid technique is adapted to the implementation of the periodic boundary condition and is useful for the capture of wake.The motive of using multigrid method is based o... |
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| Keywords: | chimera grids multigrid helicopter rotor Navier-Stokes equations |
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