Year 2021, Volume 5 , Issue 2, Pages 166 - 171 2021-06-30

An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body

Sultan SADYKOV [1] , Rinat KHALİMOV [2] , Yestay KYLYSHBEK [3] , Sagidolla BATAY [4] , Yong ZHAO [5]


The reduction of energy consumption of cars is always a significant issue in automotive design. Turbulent flow around a car body is very difficult to simulate accurately due to the complexity of the flow conditions around the body, such as complex flow separation and laminar to turbulent flow transition. In particular, flow over the Ahmed body with a rear angle of 25o is considered a challenging problem for the RANS approach with two-equation turbulence models. In this study, we aim to analyze the Kelvin-Helmholtz instability associated with this flow with a URANS approach. Methodology for utilizing the URANS method is fully discussed. The predicted velocity profiles and drag coefficient are com-pared with experimental results. Three turbulence models, such as the k-ε, k-ω and SST models, are assessed and validated with experimental data. The aim of the study is to evaluate the performance of these models for the study of the Kel-vin-Helmholtz instability over the Ahmed body and for car bodies generally us-ing experimental data for their validations. It is found that the URANS approach with the turbulence models with proper numerical treatment can perform as well as or even better than the LES. And the SST model shows the best performance compared with other turbulence models.
Turbulence Models, Ahmed Body, CFD, LES, Automotive Aerodynamics, Car Aerodynamic Design, URANS, RANS, Kelvin- Helmholtz
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Primary Language en
Subjects Engineering, Mechanical
Journal Section Research Articles
Authors

Orcid: 0000-0002-6693-2017
Author: Sultan SADYKOV
Institution: Nazarbayev Unversity
Country: Kazakhstan


Orcid: 0000-0003-2025-0034
Author: Rinat KHALİMOV
Institution: Nazarbayev Unversity
Country: Kazakhstan


Orcid: 1410-1470-0000-0031
Author: Yestay KYLYSHBEK
Institution: Nazarbayev Unversity
Country: Kazakhstan


Orcid: 0000-0001-8692-9571
Author: Sagidolla BATAY (Primary Author)
Institution: Nazarbayev University
Country: Kazakhstan


Orcid: 0000-0002-9574-4787
Author: Yong ZHAO
Institution: Nazarbayev Unversity
Country: Kazakhstan


Dates

Application Date : April 25, 2021
Acceptance Date : May 18, 2021
Publication Date : June 30, 2021

Bibtex @research article { ijastech923917, journal = {International Journal of Automotive Science And Technology}, issn = {}, eissn = {2587-0963}, address = {Gazi Üniversitesi Teknoloji Fakültesi Otomotiv Mühendisliği Bölümü, Teknikokullar, Ankara}, publisher = {Otomotiv Mühendisleri Derneği}, year = {2021}, volume = {5}, pages = {166 - 171}, doi = {10.30939/ijastech..923917}, title = {An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body}, key = {cite}, author = {Sadykov, Sultan and Khalimov, Rinat and Kylyshbek, Yestay and Batay, Sagidolla and Zhao, Yong} }
APA Sadykov, S , Khalimov, R , Kylyshbek, Y , Batay, S , Zhao, Y . (2021). An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body . International Journal of Automotive Science And Technology , 5 (2) , 166-171 . DOI: 10.30939/ijastech..923917
MLA Sadykov, S , Khalimov, R , Kylyshbek, Y , Batay, S , Zhao, Y . "An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body" . International Journal of Automotive Science And Technology 5 (2021 ): 166-171 <https://dergipark.org.tr/en/pub/ijastech/issue/60881/923917>
Chicago Sadykov, S , Khalimov, R , Kylyshbek, Y , Batay, S , Zhao, Y . "An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body". International Journal of Automotive Science And Technology 5 (2021 ): 166-171
RIS TY - JOUR T1 - An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body AU - Sultan Sadykov , Rinat Khalimov , Yestay Kylyshbek , Sagidolla Batay , Yong Zhao Y1 - 2021 PY - 2021 N1 - doi: 10.30939/ijastech..923917 DO - 10.30939/ijastech..923917 T2 - International Journal of Automotive Science And Technology JF - Journal JO - JOR SP - 166 EP - 171 VL - 5 IS - 2 SN - -2587-0963 M3 - doi: 10.30939/ijastech..923917 UR - https://doi.org/10.30939/ijastech..923917 Y2 - 2021 ER -
EndNote %0 International Journal of Automotive Science and Technology An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body %A Sultan Sadykov , Rinat Khalimov , Yestay Kylyshbek , Sagidolla Batay , Yong Zhao %T An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body %D 2021 %J International Journal of Automotive Science And Technology %P -2587-0963 %V 5 %N 2 %R doi: 10.30939/ijastech..923917 %U 10.30939/ijastech..923917
ISNAD Sadykov, Sultan , Khalimov, Rinat , Kylyshbek, Yestay , Batay, Sagidolla , Zhao, Yong . "An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body". International Journal of Automotive Science And Technology 5 / 2 (June 2021): 166-171 . https://doi.org/10.30939/ijastech..923917
AMA Sadykov S , Khalimov R , Kylyshbek Y , Batay S , Zhao Y . An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body. ijastech. 2021; 5(2): 166-171.
Vancouver Sadykov S , Khalimov R , Kylyshbek Y , Batay S , Zhao Y . An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body. International Journal of Automotive Science And Technology. 2021; 5(2): 166-171.
IEEE S. Sadykov , R. Khalimov , Y. Kylyshbek , S. Batay and Y. Zhao , "An URANS Simulation of the Kelvin-Helmholtz Aerodynamic Effect over the Ahmed Body", International Journal of Automotive Science And Technology, vol. 5, no. 2, pp. 166-171, Jun. 2021, doi:10.30939/ijastech..923917