车用空气滤清器总成性能分析与优化

摘要

提出了混合优化设计的概念,在考虑空气滤清器流动性能和降噪两大指标的前提下对空气滤清器作出整体优化.计算过程中利用有限元分析前处理软件HyperMesh进行了网格划分,利用声学分析软件Sysnoise对空气滤清器总成进行了声学性能计算,利用流场分析软件Fluent进行了进气流场和压降分析,最后依据各分析结果提出了针对空气滤清器结构改进的合理优化方案,使其在满足结构要求的前提下,传递损失和压力损失得到了较大的改善.%The concept of mixed optimization was put forward. Based on the flow performance and denoising of air filter, the overall optimization was carried out. During the calculation, the Hypermesh FEA software was used for the mesh generation, the Sysnoise acoustic software was used to calculate the acoustic performance and the Fluent fluid software was used to analyze the intake flow field and pressure loss. Finally the feasible optimized scheme for the structure-improved air filter model was acquired, which improved transfer and pressure loss under meeting the structural requirements.