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PDE and ALE
Posted Dec 13, 2011, 2:40 p.m. EST Fluid & Heat, Computational Fluid Dynamics (CFD), Mesh, Studies & Solvers 0 Replies
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I'm getting desperate with a simple problem, similar to a shock tube, that I would like to solve using Comsol. I would be very appreciated if you guys give me a little help.
This is the situation. I have a cylinder which has a membrane separating two zones (A and B). Zone B is filled with air at ambient pressure, and is at rest. Zone A is filled with Hellium at a much higher pressure than Zone B. It is also at rest for t=0. When the membrane is removed it is expected that a shock front appears, making the Hellium to expand from Zone A to Zone B. Shouldn't this be solvable using Euler Equations for compressible fluids (PDE general mode), using a moving mesh to follow the shock front?? At this stage I'm assuming only r-direction gradients.
Again, any help or sugestion will be very usefull.
Thanks!!
Pedro Santos
Hello Pedro Santos
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