【摘要】 为了寻求一种更简单有效的消声器设计方法,以某一型号发动机为例,将传统的消声器设计理论与GT-power仿真软件相结合,构建了基于GT-power的消声器优化设计流程.利用GT-power软件的声学和流体仿真功能对各消声器结构方案进行仿真分析,通过比较消声器的插入损失和压力损失,得出较优方案,然后再对特定方案进行正交试验以获取最优参数组合,并以试验进行验证.结果表明,优化后的消声器的消声量增加了约12dB.更多还原

【Abstract】 In order to seek a simpler and more effective muffler design method,take an engine as an example,the design optimization process based on GT-power was built by combining the traditional muffler design theory with GT-power simulation software.First,the simulation analysis about the structure of each muffler was carried out by using acoustic and fluid simulation function of the GT-power.Then,the optimal solution was obtained by comparing muffler insertion loss and pressure loss.Last,conduct orthogonal experiment for specific schemes to obtain the optimal parameters,which were verified by the test.The result showed that noise elimination quantity of the optimized muffler increased about 12 dB.更多还原