中文摘要：

本文应用已经过验证的有限长管道声学模型进行声衬参数的优化设计，研究了固定工况下，优化半径、声衬长度和声衬位置对阻抗优化参数的影响，其中声衬长度和声衬位置对阻抗优化参数的影响和应用无限长管道声学模型进行优化设计时的影响明显不同。本文讨论得到的结论对声衬参数优化设计有重要的指导价值。

英文摘要：

In this paper a finite duct model, which has been validated previously, is used for acoustic liner optimization design. The effects of three different parameters are discussed. The influences of liner length and liner location are apparently different from those designed by infinite duct models. The discussion results in this paper are significant for acoustic liner optimization design.