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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Simulation of Supersonic Flow over a Cone with the SU2 Code: Verification and Validation
Submission Author:
Dener Augusto Iorio , PR
Co-Authors:
Dener Augusto Iorio, Guilherme Bertoldo, Carlos Henrique Marchi
Presenter: Dener Augusto Iorio
doi://10.26678/ABCM.ENCIT2020.CIT20-0430
Abstract
The verification of the numerical solution of Euler's mathematical model present in the SU2 code and the validation of this mathematical model for an external flow problem are objectives of this work. The problem of a cone, with fineness ratio three, subject to a supersonic flow with Mach number 3.50 was addressed. Simulations were performed using up to eight meshes, with 20x20 to 2560x2560 volumes. The drag coefficients obtained from the simulations and ones calculated using extrapolated wall pressure distribution were compared with the numerical solution of the Taylor-Maccoll flow, with the numerical solution of another computational code and with experimental results. Furthermore, this work presents estimates of the numerical error and extrapolated numerical solutions with the Repeated Richardson Extrapolation method and the convergent solution. The GCI estimator presented the most conservative estimate, indicating that the estimated numerical error range of the numerical solution of the finest simulated mesh is 0.002% of its value. The validation indicated that using Euler's mathematical model to represent the phenomenon results in a modeling error estimate in the range of -9.16% to -4.47% of the experimental result.
Keywords
SU2, Cone, Verification, Validation, CFD
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