Comparative Study on CFD Turbulence Models for the Flow Field in Air Cooled Radiator

Processes

Xiangyao Xue¹  Kui Shi¹  Mingzhen Shao¹  Chao Yu¹  Yang Liu¹ 

[1] Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;

关键词: computational fluid dynamics;    heat transfer;    engine compartment;    vortex;    turbulent model;   

DOI  :  10.3390/pr8121687

来源: DOAJ

【 摘 要 】

This paper compares the performances of three Computational Fluid Dynamics (CFD) turbulence models, Reynolds Average Navier-Stokes (RANS), Detached Eddy Simulation (DES), and Large Eddy Simulation (LES), for simulating the flow field of a wheel loader engine compartment. The distributions of pressure fields, velocity fields, and vortex structures in a hybrid-grided engine compartment model are analyzed. The result reveals that the LES and DES can capture the detachment and breakage of the trailing edge more abundantly and meticulously than RANS. Additionally, by comparing the relevant calculation time, the feasibility of the DES model is proved to simulate the three-dimensional unsteady flow of engine compartment efficiently and accurately. This paper aims to provide a guiding idea for simulating the transient flow field in the engine compartment, which could serve as a theoretical basis for optimizing and improving the layout of the components of the engine compartment.

【 授权许可】

Unknown