Many thanks to Tom for the reference to "High Speed Flow", Chapman C.J. This excellent text covers the mass conservation, momentum conservation & energy conservation equations in depth - together with the relevant jump conditions. His review of characteristic surfaces is also excellent.

I have been working through Chapman's work & have been converting the results of the jump conditions for low-speed, incompressible flows. This has been rather interesting & has begun to present some solid ground for the wave phenomena (periodic solutions) I have been researching.

The question I have at the moment regards references & papers that apply the jump conditions & characteristic surfaces, for incompressible flows within confined domains eg. ducts, pipes etc. If anyone can point me towards additional reference information, I would be extremely grateful.

At this point, the information trail seems to be becoming increasingly rarefied. Many thanks.

mw...

Anyone?