摘要
The stability characteristics of laminar boundary layers over compliant walls was studied by the linear theory.Unlike the previous authors,the coupled motion of the fluid and solid was required to sat- isfy the continuity conditions of both the velocity and stress at the interface.Results of calculations show that as the speed ratio or density ratio exceeds a certain threshold value,the two types of unstable waves will no longer be distinguishable,and the tangential component of the disturbance stress is no longer negligi- ble.So the neglect of it,as the previous authors did,is unjustified.
The stability characteristics of laminar boundary layers over compliant walls was studied by the linear theory.Unlike the previous authors,the coupled motion of the fluid and solid was required to sat- isfy the continuity conditions of both the velocity and stress at the interface.Results of calculations show that as the speed ratio or density ratio exceeds a certain threshold value,the two types of unstable waves will no longer be distinguishable,and the tangential component of the disturbance stress is no longer negligi- ble.So the neglect of it,as the previous authors did,is unjustified.
基金
The project is supported by the National Natural Science Fundation of China.
