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为有效降低车辆封闭式冷却风道中风扇蜗壳的空气流动阻力,提出了计算流体力学分析与遗传算法相结合的蜗壳排气段结构优化方法,建立了蜗壳结构优化模型,开发了优化算法可执行程序Control CFD.EXE。对某车辆的风扇蜗壳排气段进行了结构优化。优化后蜗壳排气段的空气流动阻力比优化前减小了10.1%,空气质量流量增大了1.70%。
In order to effectively reduce the air flow resistance of the fan volute in the enclosed cooling air duct of a vehicle, a optimization method of volute exhaust section structure based on computational fluid dynamics analysis and genetic algorithm is proposed, and a volute configuration optimization model is established. An optimization algorithm Executable Control CFD.EXE. The fan volute exhaust section of a vehicle has been structurally optimized. The air flow resistance of the volute exhaust section after optimization was reduced by 10.1% and the air mass flow rate increased by 1.70% compared with that before optimization.