TURBULENCE MODEL FOR WALL-BOUNDED FLOW WITH ARBITRARY ROTATING AXES

机译：任意旋转轴心边界流动的湍流模型

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Rotating flows have been encountered in many engineering relevant applications such as a flow in turbo-machinery. Recently, rotating channel flows with arbitrary rotating axes have been investigated by direct numerical simulation (DNS). Although numerical studies of spanwise rotating channel flow have been reported, there are few reports on streamwise and wall-normal rotating channel flows. In the present study, first, we conducted DNS of various rotational channel flows. It is found from the DNS results that cases of streamwise rotating channel flow which have a mean spanwise velocity caused by rotation involve the counter gradient turbulent diffusion. Thus, since it is well-known that the conventional eddy viscosity turbulence model can not predict this case, we have to consider the reconstruction of a nonlinear two-equation turbulence model based on a cubic model. Consequently, we evaluated existing nonlinear two-equation turbulence models based on our DNS of streamwise and wall-normal rotating channel flows. Using the results of evaluation, we have improved the modeled expression for Reynolds stress, in which a new cubic-type nonlinear model has been proposed. The proposed nonlinear two-equation turbulence model can accurately predict rotating channel flows with arbitrary rotating axes.

机译：在许多与工程相关的应用中已经遇到了旋转流，例如涡轮机械中的流。近来，已经通过直接数值模拟（DNS）研究了具有任意旋转轴的旋转通道流。尽管已经报道了沿展向旋转通道流动的数值研究，但是关于流向和壁法向旋转通道流动的报道却很少。在本研究中，首先，我们对各种旋转通道流量进行了DNS。从DNS结果发现，由旋转引起的具有平均展向速度的沿流方向旋转的通道流涉及反梯度湍流扩散。因此，由于众所周知，传统的涡流湍流模型无法预测这种情况，因此，我们必须考虑基于三次模型的非线性二方程湍流模型的重建。因此，我们根据流向和壁法向旋转通道流的DNS评估了现有的非线性二方程湍流模型。利用评估结果，我们改进了雷诺应力的建模表达式，其中提出了新的立方型非线性模型。提出的非线性二方程湍流模型可以准确预测具有任意旋转轴的旋转通道流量。

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来源
《ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements(ETMM6); 20050523-25; Sardinia(IT)》|2005年|P.175-184|共10页
会议地点 Sardinia(IT)
作者
H. Hattori; N. Ohiwa; Y. Nagano;
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作者单位

Department of Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

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原文格式 PDF
正文语种 eng
中图分类工程流体力学;
关键词
turbulence modelling; turbulence; rotational flow; arbitrary rotating axes; direct numerical simulation;

机译：湍流建模湍流旋转流任意旋转轴直接数值模拟;

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专利

1. Nonlinear eddy diffusivity model for wall-bounded flow with arbitrary rotating axes [J] . H. Hattori, N. Ohiwa, Y. Nagano International Journal of Heat and Fluid Flow . 2006,第5期

机译：具有任意旋转轴的壁面流动的非线性涡流扩散模型
2. A simplified structure-based model using standard turbulence scale equations: computation of rotating wall-bounded flows [J] . S.C. Kassinos, C.A. Langer, G. Kalitzin, International Journal of Heat and Fluid Flow . 2006,第4期

机译：使用标准湍流比例方程的基于结构的简化模型：旋转壁边界流的计算
3. Numerical prediction of wall-bounded flows with low-Reynolds k-ε turbulence models [J] . Y. Bentaleb, E. Schall, T. Kousksou Progress in computational fluid dynamics . 2009,第2期

机译：低雷诺k-ε湍流模型对壁面流动的数值预测
4. TURBULENCE MODEL FOR WALL-BOUNDED FLOW WITH ARBITRARY ROTATING AXES [C] . H. Hattori, N. Ohiwa, Y. Nagano ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements(ETMM6) . 2005

机译：任意旋转轴的壁限流湍流模型
5. A new algebraic structure-based turbulence model for rotating wall-bounded flows. [D] . Langer, Carlos Alberto. 2004

机译：一种新的基于代数结构的湍流模型，用于旋转壁边界流。
6. Turbulence intensities in large-eddy simulation of wall-bounded flows [O] . H. J. Bae, A. Lozano-Durán, S. T. Bose, -1

机译：壁面流动大涡模拟中的湍流强度
7. Uncertainty Quantification of Turbulence Model Closure Coefficients for Transonic Wall-Bounded Flows [O] . John A. Schaefer, Thomas West, Serhat Hosder, 2015

机译：跨音壁限流湍流模型闭合系数的不确定度量化
8. Uncertainty Quantification of Turbulence Model Closure Coefficients for Transonic Wall-Bounded Flows. [R] . Schaefer, J., West, T., Hosder, S., 2015

机译：跨音速壁面流动的湍流模型闭合系数的不确定性量化。

TURBULENCE MODEL FOR WALL-BOUNDED FLOW WITH ARBITRARY ROTATING AXES

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