03.1 - Aerodynamics – CFD Methods and ValidationENHANCING CFD PREDICTIONS FOR THE GRIPEN AIRCRAFTP. Eliasson¹, P. Weinerfelt¹, F. Bramkamp, NSC, Sweden; ¹Saab, Sweden We demonstrate the advantages we obtain with a fully implicit solution technique of the Navier-Stokes equations on unstructured grids. We show comparative results for several test cases with focus on large scale on the Gripen calculations leading to more than a factor of three reduction in computing time. In many cases we also get improved steady state convergence leading to improved accuracy. |