Numerical experiments on a new class of nonoscillatory schemesNumerical experiments for the SONIC schemes on 2D inviscid, compressible, steady, and unsteady problems are presented. These schemes belong to a new class of uniformly second-order accurate nonoscillatory schemes introduced by Huynh, with the well known UNO2 scheme of Harten and Osher being the most 'diffusive' in this class. The SONIC schemes can also be considered as uniformly second order accurate extensions of the popular TVD schemes. For simplicity, a MUSCL approach for spatial discretization and a Runge-Kutta method for time integration are used. Test problems include steady oblique shock reflection and the well known unsteady double Mach reflection problem. Results confirm that the SONIC schemes are more accurate than their TVD counterparts.
Document ID
19920045569
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Suresh, Ambady (NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)
Huynh, Hung T. (NASA Lewis Research Center Cleveland, OH, United States)