| 用RNG K-E模式数值模拟180°弯道内的湍流分离流动 |
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| 引用本文： | 王少平,曾扬兵,沈孟育,中峰,徐忠.用RNG K-E模式数值模拟180°弯道内的湍流分离流动[J].力学学报,1996,28(3):257-263. |
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| 作者姓名： | 王少平 曾扬兵 沈孟育 中峰 徐忠 |
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| 作者单位： | 清华大学工程力学系 |
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| 摘 要： | 将Ｙａｋｈｏｔ与Ｏｒｓｚａｇ新近提出的ＲＮＧＫ－ε湍流模式推广应用于１８０°强曲率弯道内的湍流分离流动的数值模拟，计算在任意曲线坐标下进行，并采用速度协变分量作为求解变量以保证计算的高度稳定性，控制方程的求解采用通常的控制容积法，文中给出了详细的数值计算结果，并与实验结果进行了比较，结果表明，ＲＮＧＫ－ε湍流模式能有效地模拟有强曲率影响的湍流分离流动，展示了这一模式在工程湍流计算中的前景
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| 关 键 词： | RNGK－ε湍流模式 湍流分离流动 强曲率道 任意曲线坐标系 协变分量 |
NUMERICAL CALCULATION OF TUBULENT SEPARATED FLOWS IN 180 DEG DUCT WITH RNG K ε TUBULENCE MODEL |
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| Abstract: | A two equation turbulence mode of K ε type was recently derived by Yakhot and Orszag on Renormalization Group (RNG) methods.It was applied to solve the turbulent separated flows in a 180 deg duct.The scheme has been developed for a generalized coordinate system and in based on a control volume approach with a staggered grid arragement.The physical covariant velicity components are selected as the dependent variable in the momentum equations.The detail numerical results were given and compared with th... |
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| Keywords: | RNG K ε model turbulent separated flows 180 deg degree duct generalized coordinate covariant velocity |
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