author = "Leite, Paulo H. M. and Santos, Wilson Fernando Nogueira dos",
          affiliation = "{Brazilian Army} and {Instituto Nacional de Pesquisas Espaciais 
                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 
             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 = "25 nov. 2020"