원문정보
초록
영어
The heat transfer characteristics of forced convection according to the geometric shapes with four rectangular blocks in a horizontal PCB channel was analyzed numerically using SST (Shear Stress Transport) turbulence model. As the boundary condition for CFD (Computational Fluid Dynamics) analysis, the inlet temperature and air velocity were respectively 300 K and 3.84 m/s and the heat flux of the block surface was 358 W/㎡. The shape factors of block were width, height, spacing and channel entrance height. As the results, the heat transfer rate was decreased as the width ratio (x/h) was increased, while it was increased as the height ratio (h/x) is increased. Also as the block spacing ratio (s/x) was increased, the heat transfer effects was not significantly affected. And as the channel entrance height ratio (H/x) was increased, the heat transfer performance was decreased.
목차
1. 서론
2. 해석모델
2.1 지배방정식
2.2 수치해석
2.3 난류모델의 타당성 검증
3. 결과 및 고찰
3.1 PCB 채널 내의 열전달 및 유동 특성
3.2 블록 형상에 따른 열전달 특성
4. 결론
References