55世纪app

该报告题目大全：PANS investigation of the influence of ground and wheel motion on the aerodynamic behaviors of a van
报 告 人：Sinisa Krajnovic，瑞典查尔姆斯工院大学生机械装备和海上科学性教育医生，测算气体力学结构领域行业硕士生导师。
数据时刻：202两年6月30日 9:30-10:30
报表的位置：南岭学校小车实验楼214多性能厅
上报提要：A numerical investigation of the effects of the moving ground and rotating wheels on the turbulent flow around a square-back van model will be presented. A comparison among the partially averaged Navier–Stokes (PANS), large eddy simulation (LES) and particle image velocimetry (PIV) involving the aerodynamic drag, the wake topology, the velocity and the Reynolds stress profiles in the wake region is conducted. The proper orthogonal decomposition and fast Fourier transform are applied to the shear layers shedding from the trailing edges to comment on the coherent structures and their frequency content. The results show that PANS accurately predicts the flow field measured in experiments and predicted by a resolved LES, even with a low-resolution grid. The superiority of the PANS approach could provide good guidance for industrial research in predicting the turbulent flow around the van model with affordable computational grids. The wheel and ground motion mechanism on the aerodynamic forces has been revealed by analyzing the surface pressure distribution, the wheels’ surrounding flow, the underbody flow characteristics and the turbulent wake structures. The effects of the ground and wheel motion on the frequency, evolution and development characteristics of the wake shear layers are analyzed, providing relevant insights for future experimental investigations of square-back van models.
牵头厂家：四平市社会货车的市政工程学员   货车的减震模块化与防生全国性主要工作室