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ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
A STUDY OF ATMOSPHERIC RE-ENTRY FLOWS THROUGH THE COMPARISON OF RANS, DSMC AND EXPERIMENTAL DATA
Submission Author:
Daniel Viotti , SP , Brazil
Co-Authors:
Rodrigo Palharini, João Luiz F. Azevedo, Ruan Ramon Penha dos Passos Pereira
Presenter: Daniel Viotti
doi://10.26678/ABCM.ENCIT2016.CIT2016-0238
Abstract
The Aerodynamic Division of IAE is developing a computational tool capable of solving the hypersonic flow in atmospheric re-entry conditions. This tool comprises a Reynolds-averaged Navier-Stokes (RANS) code for altitudes in which the Knudsen number is sufficiently low such and a Direct Simulation Monte Carlo (DSMC) code for high altitudes. The main objective of the present study is to compare the RANS code results with experimental data and with results obtained from the DSMC approach at intermediate altitudes in which the Knudsen number is sufficiently low that the continuum hypothesis is valid. The obtained results show concordance in the regions of low local Knudsen number and overestimate the heat flux in the regions with high degree of rarefaction.
Keywords
Aerothermodynamics, Atmospheric reentry, RANS, DSMC, Aerothermodynamics, Atmospheric reentry, RANS, DSMC, Aerothermodynamics, Atmospheric reentry, RANS, DSMC, Aerothermodynamics, Atmospheric reentry, RANS, DSMC
