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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Numerical Solution of Internal Flow through a de Laval Nozzle Based on the Euler Model with the SU2 Code: Verification and Validation
Submission Author:
Giovanne Deni Iorio , PR
Co-Authors:
Giovanne Deni Iorio, Guilherme Bertoldo, Carlos Henrique Marchi
Presenter: Giovanne Deni Iorio
doi://10.26678/ABCM.ENCIT2020.CIT20-0426
Abstract
The present work performs the verification of the numerical solution of the internal flow through a de Laval nozzle obtained with the SU2 code and the validation of Euler's mathematical model. The flow was solved numerically in several meshes, where the finest one had 2048x1024 volumes. The discharge coefficient is the variable of interest, a coefficient that characterizes the flow and pressure losses. Comparisons of the numerical discharge coefficient with analytical and experimental results showed relative differences of 0.0257% and 0.379%, respectively, for the most refined simulated mesh. Comparisons also were made with the numerical solution of another computational code, finding relative differences of 0.000185%. Estimates of the numerical error were calculated based on error estimators. According to the GCI estimator, the numerical uncertainty does not exceed 0.001% of the numerical solution in the finest simulated mesh. Extrapolated solutions with Repeated Richardson Extrapolation and the convergent solution are also presented.
Keywords
Nozzle, Verification, Validation, CFD, SU2
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