EFFECTS OF NUMERICAL DISSIPATION ON VISCOUS SUPERSONIC FLOWS VARIABLES

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HEYDARINEZHAD G.; ESFAHANIAN V.; RASHIDI M.M.

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Journal: AMIRKABIR Year:2003 | Volume:14 | Issue:53 Page(s): 217-230

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Information Journal Paper

Title

EFFECTS OF NUMERICAL DISSIPATION ON VISCOUS SUPERSONIC FLOWS VARIABLES

Author(s)

HEYDARINEZHAD G. | ESFAHANIAN V. | RASHIDI M.M. | Issue Writer Certificate

Keywords

SHOCK FITTINGQ4

SHOCK CAPTURINGQ4

TOTAL VARIATION DIMINISHING(TVD)Q4

BEAM-WARMINGQ4

ROEQ4

Abstract

The present investigation is concerned with the understanding of the effect of numerical dissipation on viscous supersonic flow variables. The numerical dissipation is added to the central difference scheme in order to control numerical instability and to enable the capturing of shock waves. Unfortunately, the dispersive nature of this scheme introduced oscillations around discontinuities. On the other hand, the upwind schemes perform well in these regions. But due to inherent dissipative property of upwind schemes, the accuracy of flow variables especially in high gradient region within the boundary layer can be deteriorated A systematic study is performed in order to investigate the effect of numerical dissipation used in the central difference scheme compared with upwind schemes. The viscous supersonic flow variables at the wall and their profiles computed based on "Roe", "TVD" and "Beam-Warming" methods are compared with each other in order to gain some insight about the effect of numerical dissipation. Moreover, the computed results; are compared with experimental data.

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APA: Copy

HEYDARINEZHAD, G., ESFAHANIAN, V., & RASHIDI, M.M.. (2003). EFFECTS OF NUMERICAL DISSIPATION ON VISCOUS SUPERSONIC FLOWS VARIABLES. AMIRKABIR, 14(53), 217-230. SID. https://sid.ir/paper/673/en

Vancouver: Copy

HEYDARINEZHAD G., ESFAHANIAN V., RASHIDI M.M.. EFFECTS OF NUMERICAL DISSIPATION ON VISCOUS SUPERSONIC FLOWS VARIABLES. AMIRKABIR[Internet]. 2003;14(53):217-230. Available from: https://sid.ir/paper/673/en

IEEE: Copy

G. HEYDARINEZHAD, V. ESFAHANIAN, and M.M. RASHIDI, “EFFECTS OF NUMERICAL DISSIPATION ON VISCOUS SUPERSONIC FLOWS VARIABLES,” AMIRKABIR, vol. 14, no. 53, pp. 217–230, 2003, [Online]. Available: https://sid.ir/paper/673/en

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