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Easyqus December 8, 2015 14:12
Sudden drop in convergence plots
 
Hi

Please forgive me if I've put this question in the wrong section or if the answer is very simple etc.

I am using a very basic euler code with runge-kutta and have applied it to a prandtl meyer expansion on a corner transitioning from mach 1 to 4. In the convergence plot of the residuals there is a large sudden drop of all flow variables. What is a potential cause of this drop?

Many thanks for any help.

FMDenaro December 8, 2015 14:35
Quote:
Originally Posted by Easyqus (Post 576859)
Hi

Please forgive me if I've put this question in the wrong section or if the answer is very simple etc.

I am using a very basic euler code with runge-kutta and have applied it to a prandtl meyer expansion on a corner transitioning from mach 1 to 4. In the convergence plot of the residuals there is a large sudden drop of all flow variables. What is a potential cause of this drop?

Many thanks for any help.
what about your definition of resduals in the equations?


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