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Aerospike flow 3rd order

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Old   April 5, 2011, 22:22
Default Aerospike flow 3rd order
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I have a few questions concerning a 1st and 3rd order 'solution'. Below is a pic of my grid (~2.2 million):



I first wanted to solve for a 1st order solution with a pressure inlet and pressure outlet and laminar turb as a simple starting point. My question about the 1st order solution is about the convergence. Is is typical for the 'other' velocities to not converge to a low value like shown in the pic below? Even the other values converge to only ~10-2:



Here is a pic of the mach contour:



The residuals didn't converge to a low number but the flow looks right and the mass flux balances correctly.
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Old   April 5, 2011, 22:25
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When I use the first order case to start the 3rd order solution (3rd order MUSCL), the flow becomes unstable at the outlet boundary, is this typical of a higher order solution (problems near the boundary)?





Can anyone help me out with what I'm doing wrong?
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