| 用预处理方法及可压Navier-Stokes方程计算低马赫数流动 |
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| 引用本文： | 刘学强,李青,柴建忠,伍贻兆.用预处理方法及可压Navier-Stokes方程计算低马赫数流动[J].南京航空航天大学学报(英文版),2007,24(4):271-275. |
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| 作者姓名： | 刘学强 李青 柴建忠 伍贻兆 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016,中国
2. 第一飞机设计研究院,西安,710089,中国 |
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| 摘 要： | 用可压方法及预处理方法求解了低马赫数紊流流动,其中空间离散格式采用了Roe格式,紊流模型采用了DES模型.以绕NACA0012的紊流流动为例,分析了该方法对提高流动速度和精度的特性,并将其用到多段翼型及绕圆柱的非定常流动中.数值模拟结果表明,该方法能有效求解低速流动及混合流场问题,且具有较高的数值精度.
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| 关 键 词： | Navier-Stokes方程 预处理方法 紊流模型 Navier-Stokes equations preconditioning method turbulence model 预处理方法 可压 方程 计算 低马赫数流动 EQUATIONS METHODS PRECONDITIONING COMPUTATION FLOW Numerical results show methods combined equations efficient cases circular cylinder test |
| 文章编号： | 1005-1120(2007)04-0271-05 |
| 修稿时间： | 2006年10月19 |
LOW MACH NUMBER FLOW COMPUTATION USING PRECONDITIONING METHODS AND COMPRESSIBLE NAVIER-STOKES EQUATIONS |
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| Liu Xueqiang,Li Qing,Chai Jianzhong,Wu Yizhao.LOW MACH NUMBER FLOW COMPUTATION USING PRECONDITIONING METHODS AND COMPRESSIBLE NAVIER-STOKES EQUATIONS[J].Transactions of Nanjing University of Aeronautics & Astronautics,2007,24(4):271-275. |
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| Authors: | Liu Xueqiang Li Qing Chai Jianzhong Wu Yizhao |
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| Abstract: | The preconditioning method is used to solve the low Mach number flow. The space discritisation scheme is the Roe scheme and the DES turbulence model is used. Then, the low Mach number turbulence flow around the NACA0012 airfoil is used to verify the efficiency of the proposed method. Two cases of the low Mach number flows around the multi-element airfoil and the circular cylinder are also used to test the proposed method. Numerical results show that the methods combined the preconditioning method and compressible Navier-Stokes equations are efficient to solve low Mach number flows. |
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| Keywords: | Navier-Stokes equations preconditioning method turbulence model |
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