Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Evaluation of thermal effects on the surface of SARA platform during atmospheric reentry
Submission Author:
Tiago Gonçalves Faria , SP , Brazil
Co-Authors:
Tiago Gonçalves Faria, Carlos Eduardo Grossi Campos, Humberto Machado
Presenter: Humberto Machado
doi://10.26678/ABCM.COBEM2019.COB2019-0214
Abstract
The prediction of the convective heat flux incident on blunt reentry bodies as the SARA platform is of major importance to design the thermal protection of the spacecraft, which is responsible to ensure the integrity of the vehicle during reentry flight. The engineering approach developed by Zoby was chosen to calculate the heat flux over the external surface of SARA. The results obtained by Zoby’s Method were compared with the ones simulated using Computational Fluid Dynamics (CFD), which is a more complex method to estimate heating flux over the body surface and flow properties. Results show that Zoby’s Method agree with the numerical simulations when comparing the convective heat transfer coefficient and other flow properties at some specific trajectory instants. The study showed that Zoby’s Method is a satisfactory methodology to assist in the design of the thermal protection of SARA platform respecting its limitations, reaching similar results achieved by numerical simulations performed by commercial CFD software.
Keywords
Zoby’s method, Blunt body, Heat flux, Atmospheric reentry, Computational fluid dynamics (CFD)
