Comparison of Turbulent Models and Discretization Schemes Based on OpenFOAM for the Numerical Simulation of the Flow Around an Automotive Standard Model

doi:10.11908/j.issn.0253-374x.23730

Home > Archive>Volume 50, Issue S1, 2022 >32-41. DOI:10.11908/j.issn.0253-374x.23730

Comparison of Turbulent Models and Discretization Schemes Based on OpenFOAM for the Numerical Simulation of the Flow Around an Automotive Standard Model
DOI:
                        10.11908/j.issn.0253-374x.23730
                    
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                        XIA Chao1,2XIA Chao
School of Automotive Studies， Tongji University， Shanghai 201804， China;Shanghai Automotive Wind Tunnel Center， Tongji University， Shanghai 201804， China
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WANG Mengjia1,2WANG Mengjia
School of Automotive Studies， Tongji University， Shanghai 201804， China;Shanghai Automotive Wind Tunnel Center， Tongji University， Shanghai 201804， China
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CHU Shijun3CHU Shijun
School of Mathematics and Statistics， University of Sheffield， S3 7RH Sheffield， UK
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YANG Zhigang1,2,4YANG Zhigang
School of Automotive Studies， Tongji University， Shanghai 201804， China;Shanghai Automotive Wind Tunnel Center， Tongji University， Shanghai 201804， China;Beijing Aeronautical Science & Technology Research Institute， Beijing， 102211， China
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Affiliation:1.School of Automotive Studies， Tongji University， Shanghai 201804， China;2.Shanghai Automotive Wind Tunnel Center， Tongji University， Shanghai 201804， China;3.School of Mathematics and Statistics， University of Sheffield， S3 7RH Sheffield， UK;4.Beijing Aeronautical Science & Technology Research Institute， Beijing， 102211， China
Clc Number:U461.1
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Abstract:

The flow around the 35° Ahmed model is numerically explored by using three different turbulence models （the realizable k-ε （RKE）， the Spalart-Allmaras （SA）， and the shear stress transport k-ω （SST）） and four different velocity convection schemes （the linear upwind （LU）， the linear upwindV （LUV）， the localblend， and the total variation diminishing （TVD）） based on OpenFOAM. Then， two other software platforms （FLUENT and STARCCM+） are also used as references. It shows that the numerical results of RKE and SST are more reasonable than those of SA. The stable LUDSV and localblend convective scheme both partly weaken the wake oscillation caused by numerical instability， but only the TVD scheme entirely suppresses this oscillation behavior. The drag coefficients predicted by the three software platforms are all in good agreement with those of the experiment， and the error of OpenFOAM using TVD is the smallest， only 0.7%. In addition， OpenFOAM and STARCCM+ can obtain a more reasonable and similar three-dimensional wake flow structure， while FLUENT overestimates the strength of the streamwise C-pillar vortex.

Key words:vehicle aerodynamics;OpenFOAM;turbulence model;convection scheme;steady simulation

Reference

[1] Ahmed S R, Ramm G, Faltin G. Some salient features of the time-averaged ground vehicle wake[R]. Detroit: SAE World Congress, 1984: 840300.

[2] GUILMINEAU E, DENG G B, LEROYER A, et al. Assessment of hybrid RANS-LES formulations for flow simulation around the Ahmed body[J]. Computers and Fluids, 2018, 176: 302.

[3] 刘训, 赖晨光. 基于Ahmed模型的外流场数值模拟[J]. 重庆理工大学学报(自然科学版), 2013, 27(9): 122.LIU Xun, LAI Chenguang. Numerical simulation research of external flow field on ahmed model[J]. Journal of Chongqing University (Natural science), 2013, 27(9): 122.

[4] 贾志浩. 基于不同湍流模型的汽车外流场数值模拟[D].郑州: 郑州大学, 2013.JIA Zhihao. Numerical simulation of cars in the external flow field based on different turbulence models[D]. Zhengzhou: Zhengzhou University, 2013.

[5] ASHTON N, WEST A, LARDEAU S, et al. Assessment of RANS and DES methods for realistic automotive models[J]. Computers and Fluids, 2016, 128: 1.

[6] GUILMINEAU E. Computational study of flow around a simplified car body[J]. Journal of Wind Engineering & Industrial Aerodynamics, 2008, 96(6/7): 1207.

[7] MARTINAT G, BOURGUET R, HOARAU Y, et al. Numerical simulation of the flow in the wake of Ahmed body using detached eddy simulation and URANS modeling[J]. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 2008, 97: 125.

[8] 田思, 谭文林, 张英朝,等. 基于35° Ahmed模型的外流场仿真精确性与被动控制减阻研究[J]. 西华大学学报(自然科学版), 2018, 37(6):19.TIAN Si, TAN Wenlin, ZHANG Yingchao, et al. Research on simulation accuracy of exterior flow field and on passive flow control to reduce aerodynamic drag based on 35°ahmed model[J]. Journal of Xihua University(Natural Science), 2018, 37(6): 19.

[9] 崔阳阳. 基于OpenFOAM的高速列车多相流计算模型的开发和应用[D].杭州: 浙江大学, 2012.CUI Yangyang. Development and application of OpenFOAM-based multiphase flow computational model for high-speed trains[D]. Hangzhou: Zhejiang University, 2012.

[10] 吴德久. 轿车外气动噪声大涡模拟亚格子模型和壁面函数研究[D]. 长春: 吉林大学, 2015.WU Dejiu. Research on LES subgrid-scale models and wall functions for sedan exterior aerodynamic noise[D]. Changchun: Jilin University, 2015.

[11] LI T, HEMIDA H, RASHIDI M M, et al. The effect of numerical divergence schemes on the flow around trains[J]. Fluid Dynamic Research, 2020, 52(2): 5509.

[12] LI T, QIN D, ZHANG J . Effect of RANS turbulence model on aerodynamic behavior of trains in crosswind[J]. Chinese Journal of Mechanical Engineering, 2019, 32(1):1.

[13] SPALART P R, ALLMARAS S R. A one-equation turbulence model for aerodynamic flows[C]//30th Aerospace Sciences Meeting and Exhibit. Reno NV: AIAA Paper, 1992.

[14] SHIH T H, LIOU W W, SHABBIR A, et al. A new κ-ε eddy viscosity model for high reynolds number turbulent flows[J]. Computers Fluids, 1995, 24(3):227.

[15] MENTER F R. Two-equation eddy-viscosity turbulence models for engineering applications[J]. AIAA Journal, 1994, 32(8): 1598.

[16] VERSTEEG H K, MALALASEKERA W. An introduction to computational fluid dynamics: the finite volume method[M]. New York: Pearson education, 2007.

[17] MEILE W, BRENN G, REPPENHAGEN A, et al. Experiments and numerical simulations on the aerodynamics of the Ahmed body[J]. CFD Letters, 2011, 3(1):32.

[18] LIENHART H, BECKER S. Flow and turbulence structure in the wake of a simplified car model[R]. SAE Technical Paper, 2003-01-0656.

[19] ARGYROPOULOS C D, MARKATOS N C. Recent advances on the numerical modelling of turbulent flows[J]. Applied Mathematical Modelling, 2015, 39(2):693.

[20] TUNAY T, SAHIN B, OZBOLAT V. Effects of rear slant angles on the flow characteristics of Ahmed body[J]. Experimental Thermal and Fluid Science, 2014, 57:165.

[21] LIU K, ZHANG B F, ZHANG Y C, et al. Flow structure around a low-drag Ahmed body[J]. Journal of Fluid Mechanics, 2021, 913(A21):1.

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XIA Chao, WANG Mengjia, CHU Shijun, YANG Zhigang. Comparison of Turbulent Models and Discretization Schemes Based on OpenFOAM for the Numerical Simulation of the Flow Around an Automotive Standard Model[J].同济大学学报(自然科学版),2022,50(S1):32~41

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Received:October 20,2022
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Online: June 04,2024
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