Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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Effects of Nose Radius of Blunt Body on Aerodynamic Heating in Thermochemical Nonequilibrium Flow

무딘 물체의 노즈 반지름이 비평형 유동의 공력 가열에 미치는 영향

  • 이창호 (한국항공우주연구원 스마트무인기개발사업단) ;
  • 박승오 (한국과학기술원 항공우주공학과)
  • Published : 2003.12.01
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Abstract

The effect of nose radius on aerodynamic heating is investigated by using the Navier-Stokes code extended to thermochemical nonequilibrium airflow, Spherical blunt bodies, whose nose radius varies from 0.O03048 m to 0.6096 m, flying at Mach 25 at an altitude of 53.34 km are considered. Comparison of heat flux at stagnation point with the solution of Viscous Shock Layer and Fay-Riddell are made. Results show that the flow for very small radius is in a nearly frozen state, and therefore the heat flux due to diffusion is smaller than that due to translational energy. As the radius becomes larger, the portion of heat flux by diffusion becomes greater than that of heat flux by translational temperature and approaches to a constant value.

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References

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