@Article{LeiteSant:2019:CoAnRa,
author = "Leite, Paulo H. M. and Santos, Wilson Fernando Nogueira dos",
affiliation = "{Brazilian Army} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "Computational analysis of a rarefied hypersonic flow over
backward-facing steps",
journal = "Journal of Thermophysics And Heat Transfer",
year = "2019",
volume = "2019",
note = "{Setores de Atividade: Pesquisa e desenvolvimento
cient{\'{\i}}fico.}",
keywords = "DSMC, Hypersonic Flow, Rarefied Flow, Backward-Facing Step.",
abstract = "This work deals with a numerical study on backward-facing steps
situated in a nonreacting low-density hypersonic flow. The work is
motivated by the interest in investigating the impact on the
aerodynamic surface quantities of surface discontinuities on
hypersonic vehicles. Discontinuities are represented by
backward-facing steps with boundary-layer thickness larger than
the step height at the step position. The primary emphasis is to
assess the sensitivity of the heat transfer, pressure, and skin
friction coefficients. In doing so, these effects have been
investigated by employing the direct simulationMonte Carlo (DSMC)
method. The analysis showed that the flow past a backwardfacing
step in hypersonic flow is characterized by a strong expansion on
the corner of the step, which influences the downstream separation
region and the aerodynamics surface properties downstream of the
back face. It was found that the recirculation region behind of
the steps is a function of the back-face height, for the
conditions investigated. In addition, the heat flux to the surface
and the wall pressure increased in the reattachment zone
downstream of the back face and reached the flat plate values in a
smooth fashion. A comparison of the present simulation results
with experimental data showed close agreement concerning the heat
flux to step surface.",
doi = "10.2514/1.T5486",
url = "http://dx.doi.org/10.2514/1.T5486",
issn = "0887-8722",
label = "lattes: 4859685163568596 2 LeiteSant:2019:CoAnRa",
language = "en",
urlaccessdate = "27 abr. 2024"
}