AUSM-Based High-Order Solution for Euler Equations
Angelo L. Scandaliato 1, Meng-Sing Liou 2*1 Ohio Aerospace Institute, Cleveland, OH, 44142, USA. Currently, University of California at San Diego.
2 NASA Glenn Research Center, Cleveland, OH, 44135, USA.
Received 25 March 2011; Accepted (in revised version) 8 December 2011
Available online 17 April 2012
In this paper we demonstrate the accuracy and robustness of combining the advection upwind splitting method (AUSM), specifically AUSM^+-UP , with high-order upwind-biased interpolation procedures, the weighted essentially non-oscillatory (WENO-JS) scheme  and its variations [2, 7], and the monotonicity preserving (MP) scheme , for solving the Euler equations. MP is found to be more effective than the three WENO variations studied. AUSM^+-UP is also shown to be free of the so-called ``carbuncle'' phenomenon with the high-order interpolation. The characteristic variables are preferred for interpolation after comparing the results using primitive and conservative variables, even though they require additional matrix-vector operations. Results using the Roe flux with an entropy fix and the Lax-Friedrichs approximate Riemann solvers are also included for comparison. In addition, four reflective boundary condition implementations are compared for their effects on residual convergence and solution accuracy. Finally, a measure for quantifying the efficiency of obtaining high order solutions is proposed; the measure reveals that a maximum return is reached after which no improvement in accuracy is possible for a given grid size.AMS subject classifications: 65, 76
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Key words: Shock capturing, advection upwind splitting, Euler equations, weighted essentially non-oscillatory, monotonicity preserving.
Email: firstname.lastname@example.org (A. L. Scandaliato), email@example.com (M.-S. Liou)