摘要: In modeling the noise propagation in a duct of a ducted fan engine, the authors needed the boundary condition satisfied by the acoustic pressure on a lined duct wall in the presence of flow. The result in the form used by the auth... 展开 In modeling the noise propagation in a duct of a ducted fan engine, the authors needed the boundary condition satisfied by the acoustic pressure on a lined duct wall in the presence of flow. The result in the form used by the authors was derived by M.K. Myers who presented a formal derivation of a related result by K. Taylor. A good review of the subject can be found in this document. Here a brief and simple derivation of the acoustic boundary condition of Myers is given. 收起