We consider the use of low speed preconditioning for time dependent problems. These are solved using a dual time step approach. We consider the effect of this dual time step on the parameter of the low speed preconditioning. In addition, we compare the use of two sets of variables, conservation and primitive variables, to solve the system. We show the effect of these choices on both the convergence to a steady state and the accuracy of the numerical solutions for low Mach number steady state and time dependent flows.
Choice of Variables and Preconditioning for Time Dependent Problems
16th AIAA CFD Conference ; 2003 ; Orlando, FL, United States
2003-01-01
Conference paper
No indication
English
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