%0 Conference Proceedings
%4 dpi.inpe.br/plutao/2013/05.31.19.43.41
%2 dpi.inpe.br/plutao/2013/05.31.19.43.42
%@issn 2176-5480
%F lattes: 4859685163568596 1 Santos:2013:GaInIm
%T Gas-Surface Interaction Impact on Aerodynamic Heating of a Reentry Brazilian Capsule
%D 2013
%A Santos, Wilson Fernando Nogueira dos,
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress wilson@lcp.inpe.br
%B International Congress of Mechanical Engineering (COBEM 2013), 22
%C Ribeirão Preto
%8 3-7 Nov. 2013
%I ABCM
%S Proceedings
%K DSMC, Hypersonic flow, Rarefied flow, Reentry capsule, SARA.
%X This work presents a computational analysis of the gas-surface interaction impact on the prediction of the main aerodynamic surface loads of a space reentry capsule. In the present work different surface accommodation coefficients have been simulated by using the Direct Simulation Monte Carlo (DSMC) method in conjunction with the Cercignani- Lampis-Lord gas surface interaction model. The DSMC calculations examine differences in predictions of aerodynamic forces and heat transfer between full and partial surface accommodations for a hypersonic flow past to the Brazilian prototype reentry capsule SARA (acronym for SAtélite de Reentrada Atmosférica). Seven combinations of normal and tangential accommodation coefficients associated to five different altitudes were used in the simulation. For the flow conditions considered, the analysis showed that stagnation point heating are sensitive to changes on either normal or tangential accommodation coefficients. Results substantiate that it becomes imperative to take surface accommodation into account in order to make accurate predictions of the aerodynamic forces acting on the capsule surface, and of the heat transfer rates to the surface of the capsule at hypersonic flow.
%@language en
%O Setores de Atividade: Outras atividades profissionais, científicas e técnicas.