轮辐通风孔结构对车轮风阻及通风性能的影响

Effect of Spoke Hole Structure on Air Drag and Ventilating Performance of wheel

采用CFD方法对某型号钢制车轮风阻及通风性能进行了仿真分析,研究了轮辐通风孔结构对车轮风阻及通风性能的影响,并通过与实验结果的对比验证了本文流场计算方法的可靠性.结果表明:左轮改型风阻系数比原型增加了1.29%,右轮改型增加了1.64%;左轮改型总通风量比原型减小了52.74%,右轮改型增加了47.09%.说明改型的风阻虽有小幅增加,但右轮改型可以较大幅度提高通风孔的通风性能.

The air drag and ventilating performance of steel wheel were simulated by CFD method. The effect of spoke hole structure on air drag and ventilating performance of wheel was studied. The reliability of the flow field calculation method was validated by comparing with experimental results. The results show that the drag coefficients of remodeled left and right wheel increase by 1.29% and 1.64% respectively compared with the original wheel. The ventilation rate of the proposed left wheel decreases by 52. 74% and the right wheel increases by 47. 09%. These indicate that although both the remodeled wheels can increase air drags slightly, the remodeled right wheel can increase ventilating performance of ventilation holes greatly.