한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2002년도 춘계 학술대회논문집
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- Pages.109-114
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- 2002
작은 크기의 무딘 물체에 대한 극초음속 유동의 수치해석
Numerical Analysis of Hypersonic Flow over Small Radius Blunt Bodies
초록
The effect of nose radius on aerodynamic heating are investigated by using the Wavier-Stokes code extended to thermochemical nonequilibrium airflow. A spherical blunt body, whose radius varies from 0.003048 m to 0.6096 m, flying at Mach 25 at an altitude of 53.34 km is considered. Comparison of heat flux at stagnation point with the solution of Viscous Shock Layer and Fay-Riddell are made. Obtained result reveals that the flow chemistry for very small radius is nearly frozen, and therefore the contribution of heat flux due to chemical diffusion is smaller than that of translational energy. As the radius becomes larger, the portion of diffusion heat flux becomes greater than translational heat flux and approaches to a constant value.
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