B-C转捩模型的DDES方法模拟转捩大分离流动

doi:10.19596/j.cnki.1001-246x.8007

计算物理 ›› 2020, Vol. 37 ›› Issue (1): 46-54.DOI: 10.19596/j.cnki.1001-246x.8007

B-C转捩模型的DDES方法模拟转捩大分离流动

余秋阳¹, 包芸¹, 王圣业², 王光学^2,3

1. 中山大学航空航天学院, 广东广州 510006;
2. 国防科技大学空天科学学院, 湖南长沙 410073;
3. 中山大学物理学院, 广东广州 510006

收稿日期:2018-11-15 修回日期:2019-01-25 出版日期:2020-01-25 发布日期:2020-01-25
作者简介:余秋阳,硕士生,主要从事计算流体力学研究,E-mail:yuqy7@mail.sysu.edu.cn

DDES for Separated Transitional Flows Based on B-C Transition Model

YU Qiuyang¹, BAO Yun¹, WANG Shengye², WANG Guangxue^2,3

1. School of Aeronautics and Astronautics, Sun Yat-sen University, Guangzhou, Guangdong 510006, China;
2. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073, China;
3. School of Physics, Sun Yat-sen University, Guangzhou, Guangdong 510006, China

Received:2018-11-15 Revised:2019-01-25 Online:2020-01-25 Published:2020-01-25

摘要/Abstract

摘要： 根据零压力梯度平板的实验数据对B-C转捩模型中的经验关联式进行标定.标定后的B-C转捩模型在进口湍流度较低的平板算例上可以提供更合理的转捩预测结果.但受限于RANS方法自身特性，B-C转捩模型对转捩后出现的大分离流动计算可靠性较差.结合延迟分离涡模拟SA-DDES方法和B-C转捩模型，发展了转捩-延迟分离涡模拟BC-DDES方法.三维S-K平板的数值模拟表明，BC-DDES方法能得到与B-C转捩模型一致的转捩结果.三维圆柱绕流的数值模拟表明，BC-DDES方法得到与实验符合的平均阻力系数和表面压力分布，并且计算花费比tHRLES方法少.

关键词: 转捩模型, 标定, 分离涡模拟, BC-DDES, 大分离流动

Abstract: Empirical correlations in B-C transition model were calibrated with experimental values of zero pressure gradient plates. Calibrated B-C transition model predicts reasonably transition positions with low inlet turbulence intensity. However, due to limitations of RANS method, B-C transition model’s accuracy diminishes for massively separated flows. A turbulence closure named transitional Delayed Detached-Eddy Simulation (BC-DDES) method is proposed which combines traditional SA-DDES method and B-C transition model. This method has the potential for accurately capturing massively separated boundary layers in transitional Reynolds number range. Numerical simulation of three-dimensional S-K flat plate shows that BC-DDES method obtains transition prediction consistent with baseline transition model. Comparisons are evaluated on circular cylinder in crossflow. It shows that pressure distribution and drag coefficient of cylinder calculated with BC-DDES method agree well with experimental data, with less computational costs than tHRLES method.

Key words: transition model, calibration, detached-eddy simulation, BC-DDES, massively separated flow

中图分类号:

V211.3

余秋阳, 包芸, 王圣业, 王光学. B-C转捩模型的DDES方法模拟转捩大分离流动[J]. 计算物理, 2020, 37(1): 46-54.

YU Qiuyang, BAO Yun, WANG Shengye, WANG Guangxue. DDES for Separated Transitional Flows Based on B-C Transition Model[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2020, 37(1): 46-54.

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B-C转捩模型的DDES方法模拟转捩大分离流动

DDES for Separated Transitional Flows Based on B-C Transition Model

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