%0 Conference Proceedings
%4 dpi.inpe.br/plutao/2013/05.31.19.43.20
%2 dpi.inpe.br/plutao/2013/05.31.19.43.21
%@doi 10.2514/6.2013-2788
%F lattes: 4859685163568596 2 LeiteSant:2013:CoAnLo
%T Computational Analysis of Low-Density Hypersonic Flow over Backward-Facing Steps
%D 2013
%A Leite, Paulo Henrique Mineiro,
%A Santos, Wilson Fernando Nogueira dos,
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress
%@electronicmailaddress wilson@lcp.inpe.br
%B AIAA Thermophysics Conference, 44.
%C San Diego
%8 24-27, June 2013
%S Proceedings
%1 American Institute of Aeronautics and Astronautics (AIAA)
%K Aerodynamic surfaces, Backward facing step, Computational analysis, Direct simulation Monte Carlo method, Experimental uncertainty, Flow over backward-facing steps, Skin friction coefficient, Surface heat fluxes Engineering controlled terms: Aerodynamics, Computer simulation, Facings, Numerical methods, Sensitivity analysis Engineering main heading: Hypersonic flow.
%X This paper describes a numerical study on backward-facing steps situated in a rarefied hypersonic flow by employing the Direct Simulation Monte Carlo (DSMC) method. The work is motivated by the interest in investigating the step-height effect on the aerodynamic surface quantities. In this fashion, the primary aim of this paper is to examine the sensitivity of the heat transfer, pressure and skin friction coefficients with respect to stepheight variations. The analysis showed that the hypersonic flow past to a backward-facing step is characterized by a strong expansion around the step corner, which influences the aerodynamics surface properties downstream its back face. It was also found that changing the step height affected the aerodynamic surface quantities a distance of a few mean free paths upstream of it. Numerical results were compared with available experimental data of surface heat flux downstream of the step, showing a very reasonable agreement within experimental uncertainty.
%@language en
%3 Computational Analysis.pdf
%O Setores de Atividade: Pesquisa e desenvolvimento científico.