چکیده مقاله
This paper examines the aerodynamic efficiency of an Audi A4 model car through the flow properties about the body under various turbulence hypothesis using the Computational Fluid Dynamics CFD The simulation aims at achieving fuel efficiency and decreasing drag by establishing the verdict of drag and friction ratios To identify the behavior of flow around the car under incompressible headwind conditions, four turbulence models were used; k epsilon, k omega SST, Transition SST and k kl omega ANSYS Fluent software was modeled, meshed, and solved to get the car geometry The findings indicated that, the k omega SST model had the lowest drag coefficient of 0 2583, and thus it was the best in terms of ensuring that there was a reduction in the aerodynamic drag The model that presented the best drag coefficient of 0 3654 was the Transition SST model To gain a comprehensive insight into the aerodynamic behaviour of every turbulence model, velocity contours, distribution of pressure and streamline patterns were examined
کلیدواژهها
نویسندگان
Mohammad Abolfathi
M Sc, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
Seyyed Mohammadreza Mirahmadian
M Sc student, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
Yasin Salami Ranjbaran
Research Associate, School of Automotive Engineering, Iran University of Science and Technology
شیوه ارجاع
Abolfathi, Mohammad and Mirahmadian, Seyyed Mohammadreza and Salami Ranjbaran, Yasin,1404,Analysis of Aerodynamics on Surface of a Car Using Different Turbulant Models,2nd Automotive Industries Recent Advances and Future Trends,Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس پیشرفت های اخیر و روندهای آینده در صنعت خودرو29 بهمن 1404 · تهران