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COBEM 2019
25th International Congress of Mechanical Engineering
EFFECTS OF NUMERICAL PARAMETERS AND ARTIFICIAL DISSIPATION IN THE SIMULATION OF INVISCID NOZZLE FLOWS
Submission Author:
Frederico Bolsoni Oliveira , SP
Co-Authors:
Frederico Bolsoni Oliveira, João Luiz F. Azevedo
Presenter: Frederico Bolsoni Oliveira
doi://10.26678/ABCM.COBEM2019.COB2019-1227
Abstract
An internal, two-dimensional transonic nozzle flow is simulated using four different numerical schemes: Beam and Warming implicit approximate factorization algorithm, Steger and Warming implicit flux vector splitting algorithm, van Leer explicit flux vector splitting algorithm and Liou’s AUSM+. The effects of numerical parameters over the simulation output and the influence of artificial dissipation in the flow features are evaluated. The present results show good agreement with the available literature and demonstrate that some flow structures can be severely dampened or incorrectly captured by the direct or indirect inclusion of excessive artificial dissipation.
Keywords
Computational Fluid Dynamics, Nozzle Flow, Artificial Dissipation, Euler equations, Flux Vector Splitting
