I am working to design a efficient aircraft nose cone. for my work the longitudinal wave simulator is necessary to find the some physical properties of the fluid.

I want to design a simulator for Longitudinal Wave as shown in the following page.


In the Longitudinal Wave animation, the Object is moving in front and back and the fluid is at rest.
In case the object is at rest and the fluid is moving, what will be the result?.
Both the Object and fluid are in motion in opposite direction with same speed, what will be the result?
Here i want to use the different object.

Please Help Me