Sudden drop in convergence plots

Easyqus · December 8, 2015, 15:12

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, 15:35

Quote:

Originally Posted by Easyqus

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?

December 8, 2015, 15:12	Sudden drop in convergence plots	#1
Easyqus New Member a m s Join Date: Dec 2015 Posts: 5 Rep Power: 10	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.

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