%0 Book Section
%4 sid.inpe.br/mtc-m21b/2016/01.11.15.39
%2 sid.inpe.br/mtc-m21b/2016/01.11.15.39.45
%@doi 10.1051/eucass/201507369
%T Computational analysis of a rarefied hypersonic flow over combined gap/step geometries
%D 2015
%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
%E Knight, D.,
%E Lipatov, I.,
%E Reijasse, P.,
%B Progress in Flight Physics
%I EDP Sciences
%P 369-394
%K Computational analysis, hypersonic flow.
%X This work describes a computational analysis of a hypersonic §ow over a combined gap/step con¦guration at zero degree angle of attack, in chemical equilibrium and thermal nonequilibrium. E¨ects on the §ow- ¦eld structure due to changes on the step frontal-face height have been investigated by employing the Direct Simulation Monte Carlo (DSMC) method. The work focuses the attention of designers of hypersonic con- ¦gurations on the fundamental parameter of surface discontinuity, which can have an important impact on even initial designs. The results high- light the sensitivity of the primary §ow¦eld properties, velocity, density, pressure, and temperature due to changes on the step frontal-face height. The analysis showed that the upstream disturbance in the gap/step con- ¦guration increased with increasing the frontal-face height. In addition, it was observed that the separation region for the gap/step con¦gura- tion increased with increasing the step frontal-face height. It was found that density and pressure for the gap/step con¦guration dramatically increased inside the gap as compared to those observed for the gap con- ¦guration, i. e., a gap without a step.
%@language en
%3 Progress_in_Flight_Physics_07_0369(2015).pdf