阻性管道消声器消声量方程的一个新算法

New scheme for transmission loss estimation of mufflers

将阻性管道消声器消声量特征疗程（组）转化为常微分方程（组），由此给出消声量计算的一个新方法．该方法毋需迭代因而不存在计算稳定性问题，计算量小，初值的选取也很简单，适合于扁矩形、任意矩形及圆形等各种截面管道消声器，尤其对多变量、考虑平均流影响的情形更为有效。

A new scheme for estimation of transmission loss of muffiers is developedby equation transformation. The new scheme has no problem of stability which oftenhappens in iterative methods and the selection of starting complex value is easier thaniterative methods. It is more effective for muffiers with multiple solution variables con-sidering mean flow. Some examples are used to validate the new scheme.