Title: Influence analysis of front grille shape on flow field in front cabin of series hybrid electric truck based on large eddy simulation

Authors: Miao Qi; Anzhu Chen; Congxiang Lu; Xiaofang Yang; Bao Tang; Yun Wang

Addresses: School of Automobile and Transportation, Yancheng Polytechnic College, Yancheng, 224005, China ' School of Automobile and Transportation, Yancheng Polytechnic College, Yancheng, 224005, China ' School of Automobile and Transportation, Yancheng Polytechnic College, Yancheng, 224005, China ' School of Automobile and Transportation, Yancheng Polytechnic College, Yancheng, 224005, China ' School of Automobile and Transportation, Yancheng Polytechnic College, Yancheng, 224005, China ' School of Automobile and Transportation, Yancheng Polytechnic College, Yancheng, 224005, China

Abstract: In view of the influence of front grille design variables on the flow field in the front cabin of series hybrid electric trucks, the cooling system of a certain models simulated calculation. The influence of design variables such as grid shape, spacing and width on the cooling system of series hybrid electric truck engines was studied. The results show that when the front grille is changed to hexagon, vertical strip, horizontal strip, square and diamond, the performance of the cooling system is improved most obviously by the vertical strip grille. Under the condition that the shape and width of the grille remain unchanged, as the grille spacing decreases from 7 mm to 1 mm, the air mass flow rate increases by 5.72%. The width of the grid has little effect on the air mass flow rate of the cooling module.

Keywords: cooling system; grid; mass flow rate; numerical simulation; large eddy simulation.

DOI: 10.1504/IJVD.2023.134765

International Journal of Vehicle Design, 2023 Vol.92 No.2/3/4, pp.403 - 416

Received: 10 May 2022
Received in revised form: 17 Dec 2022
Accepted: 29 Aug 2023
Published online: 09 Nov 2023 *

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