Comparison of Turbulence Models Applied to Backward-Facing Step Flow

Toshio KOBAYASHI; Shigenori TOGASHI

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Comparison of Turbulence Models Applied to Backward-Facing Step Flow

机译：逆向分步流动中湍流模型的比较

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In our previous work, we have already computed backward-facing step flow using large eddy simulation(LES) and obtained satisfactory results in comparison to experimental data. In this work, the behavior of time-averaged turbulence models and the influence of the diffusion model in the turbulent energy equation are investigated using the LES database. It is found that the algebraic stress model describes this flow more accurately than the eddy viscosity model, and that the gradient-diffusion model for the turbulent diffusion term cannot accurately predict the turbulent energy distribution in the recirculating region. A new diffusion model using TSDIA theory is applied and the relationship between the reattachment length and the turbulent energy distribution in the recirculating region is discussed.

机译：在我们以前的工作中，我们已经使用大涡模拟（LES）计算了向后的步流，并且与实验数据相比获得了令人满意的结果。在这项工作中，使用LES数据库研究了时间平均湍流模型的行为以及扩散模型对湍流能量方程的影响。发现代数应力模型比涡流粘度模型更准确地描述了该流动，并且湍流扩散项的梯度扩散模型无法准确预测再循环区域中的湍流能量分布。应用了基于TSDIA理论的新扩散模型，并讨论了再附着长度与再循环区湍流能量分布之间的关系。

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《JSME International Journal. Series B, Fluids and Thermal Engineering》 |1996年第3期|p.453-460|共8页
作者
Toshio KOBAYASHI; Shigenori TOGASHI;
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作者单位

Institute of Industrial Science, University of Tokyo, 7-22-1 Roppongi, Minato-ku, Tokyo 106, Japan;

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原文格式 PDF
正文语种 eng
中图分类机械学（机械设计基础理论）;能源与动力工程;
关键词
turbulent flow; separation; numerical analysis; LES database; algebraic stress model; gradient-diffusion model; reattachment length;

机译：湍流分离数值分析LES数据库代数应力模型梯度扩散模型附着长度;

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1. Prediction of homogeneous shear flow and a backward-facing step flow with some linear and non-linear K-ε turbulence models [J] . X.-D. Yang, H.-Y. Ma, Y.-N. Huang Communications in Nonlinear Science and Numerical Simulation . 2005,第3期

机译：用一些线性和非线性K-ε湍流模型预测均质剪切流和后向阶跃流
2. CFD Investigation of Flow Over a Backward-facing Step using an RNG k-? Turbulence Model [J] . Steven Darmawan, Harto Tanujaya International Journal of Technology . 2019,第2期

机译：使用RNG k-α在后向沿后的步骤中的差价合约调查湍流模型
3. Unsteady Supersonic Flows over a Backward-Facing Step with Applied Magnetic Field [J] . Ovais U. Khan, Klaus A. Hoffmann Journal of Spacecraft and Rockets . 2010,第3期

机译：在施加磁场的情况下，超音速流向后倾斜
4. A Comparison of Detached-Eddy Simulation and Reynolds-Stress Modelling Applied to the Flow over a Backward-Facing Step and an Airfoil at Stall [C] . Axel Probst, Rolf Radespiel, Christoph Wolf, AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition . 2010

机译：拆卸涡流仿真和雷诺 - 应力建模的比较，其在落后步骤中的流动和翼型的流动
5. Implementation of 3DPTV for turbulence analysis and subgrid-scale stress model testing of a backward-facing step flow [D] . Dona, Nicholas 2015

机译：3DPTV的实现，用于反向步流的湍流分析和亚网格尺度应力模型测试
6. Modeling of Knudsen Layer Effects in the Micro-Scale Backward-Facing Step in the Slip Flow Regime [O] . Apurva Bhagat, Harshal Gijare, Nishanth Dongari 2019

机译：滑流区微尺度向后退步中的克努森层效应建模
7. Comparison of Turbulence Models Applied to Backward-Facing Step Flow. [O] . Toshio KOBAYASHI, Shigenori TOGASHI 1996

机译：None
8. Turbulent Separated Flow Past a Backward-Facing Step: A Critical Evaluation ofTwo-Equation Turbulence Models [R] . Thangam, S., Speziale, C. G. 1991

机译：湍流分离流经过后向步骤：两个方程湍流模型的临界评价

Comparison of Turbulence Models Applied to Backward-Facing Step Flow

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