A Study on the Analysis of Surface Heat Flux Using the Transient Heat Flux Method

Yi, Jong-Ju

Journal of the Korea Institute of Military Science and Technology 2010;13(3):503-510.

Jong-Ju Yi

비정상열유속 기법을 이용한 표면 열유속 해석에 관한 연구

이종주

국방과학연구소

Abstract

The quick variation of the canister wall temperature causes the modification of the shape of canister wall. This paper is the possibility of adoption and the error analysis about the transient heat flux method. The commercial code(Fluent Ver6.2.16) was employed for the calculation of surface temperature in the case of steady and unsteady heat flux condition. Based the surface temperature variation and surface material property, transient heat flux method can calculate the surface heat flux. In the case of steady heat flux condition, the error is about 2%, and in the case of unsteady heat flux condition, the error is about 3.6%. With the unsteady heat flux condition, the time which reach the maximum surface heat flux is almost same between the numerical analysis and transient heat flux method.

Key Words: Transient Heat Flux Method, Heat Transfer, Semi-infinity Condition, Surface Heat Flux