[James L Miller]

Originally Posted by SSDiv6

Steve,

You were actually looking for a Gas Dynamics response which happens to be related to Fluid Dynamics.

Here is a link to a good treatise regarding Gas Dynamics.

http://www3.nd.edu/~powers/ame.30332/notes.pdf

Boy I was right with you until I hit the bit on tensors. It's been 30 years since I did that in college and I've sort of forgotten most of the mathematics.