Numerical simulation of hypersonic flow over a sphere with surface injection

Eishin Dendou, Keisuke Sawada

Research output: Contribution to conferencePaper

10 Citations (Scopus)

Abstract

Numerical simulation of hypersonic flow over a blunt body is carried out for the purpose of examining the effect of surface injection flow in promoting turbulence effect in the boundary layer. In the calculation, injection flow is assumed to be turbulent according to the Park’s injection-induced turbulence model which is implemented in an appropriate oneequation turbulence model. Obtained numerical results are compared with existing experimental data on the velocity profile in the boundary layer. It is shown that a turbulent boundary layer develops when surface injection flow is introduced, even for a laminar upstream flow. A reasonable agreement is obtained for velocity profile at the vicinity of solid wall, but a large discrepancy is seen in the middle of boundary layer. Efforts are made to improve the agreement by changing injection rate, time constant of porous material, and free stream eddy viscosity, but none gives a totally satisfactory agreement. Inability of the turbulence model in calculating a boundary layer flow with a favorable pressure gradient is suggested as the probable cause.

Original languageEnglish
Publication statusPublished - 1998 Jan 1
Event36th AIAA Aerospace Sciences Meeting and Exhibit, 1998 - Reno, United States
Duration: 1998 Jan 121998 Jan 15

Other

Other36th AIAA Aerospace Sciences Meeting and Exhibit, 1998
CountryUnited States
CityReno
Period98/1/1298/1/15

ASJC Scopus subject areas

  • Engineering(all)
  • Space and Planetary Science

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    Dendou, E., & Sawada, K. (1998). Numerical simulation of hypersonic flow over a sphere with surface injection. Paper presented at 36th AIAA Aerospace Sciences Meeting and Exhibit, 1998, Reno, United States.