How to proceed to higher order solution convergence -- CFD Online Discussion Forums

July 27, 2017, 10:01	How to proceed to higher order solution convergence	#1
Abhinand Member Abhinand Join Date: Jun 2016 Posts: 75 Rep Power: 10	Hello CFD giants, I am simulating a supersonic flow over a flat plate with an injector in a viscous laminar model. I have a converged solution with the first order scheme, but I want to get a better solution using a second order upwind scheme. I had previously used a courant number of 0.96, density based solver settings with AUSM Implicit scheme. But now when I continue my calculation and change to second order scheme, the residuals shoot up drastically. How do I control that and achieve a second order converged solution. Any help and advice is appreciated. Thanks for your time guys.

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