Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed

Ahmed Al-Saadi; Khaled Al-Farhany; Ahmed Essa Faisal; Mohammed Azeez Alomari; Wasim Jamshed; Mohamed R Eid; El Sayed M Tag El Din; Ayesha Amjad

doi:10.1038/s41598-022-23183-z

Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed

Sci Rep. 2022 Nov 2;12(1):18462. doi: 10.1038/s41598-022-23183-z.

Authors

Ahmed Al-Saadi¹, Khaled Al-Farhany¹, Ahmed Essa Faisal¹, Mohammed Azeez Alomari¹, Wasim Jamshed², Mohamed R Eid^{3

4}, El Sayed M Tag El Din⁵, Ayesha Amjad⁶

Affiliations

¹ Department of Mechanical Engineering, University of Al-Qadisiyah, Al-Qadisiyah, 58001, Iraq.
² Department of Mathematics, Capital University of Science and Technology (CUST), Islamabad, 44000, Pakistan. wasiktk@hotmail.com.
³ Department of Mathematics, Faculty of Science, New Valley University, Al-Kharga, 72511, Al-Wadi Al-Gadid, Egypt.
⁴ Department of Mathematics, Faculty of Science, Northern Border University, Arar, 1321, Saudi Arabia.
⁵ Electrical Engineering, Faculty of Engineering and Technology, Future University in Egypt, New Cairo, 11835, Egypt.
⁶ Faculty of Organization and Management, Silesian University of Technology, 44-100, Gliwice, Poland.

Abstract

The current study investigates different methods to minimize the drag coefficient (C_D) without ignoring the safety factor related to the stability of a vehicle, i.e., the lift coefficient (C_L). The study was carried out by employing an SUV car analyzed numerically using one of the CFD software, Ansys. Four different models such as realizable k-ε, standard k-ω, shear stress transport k-ω, and Reynolds stress model (RSM). The considered models have been validated with experimental data and found in good agreement. The considered inlet velocity varies from 28 to 40 m/s, the results showed that the drag coefficient and the stability are both improved by applying a modification on the roof of the considered car.

MeSH terms

Automobiles*
Software*
Stress, Mechanical