원문정보
초록
영어
In this study, we analyzed the radiant heat performance of ballast fin when the aspect ratio of the fin of ballast was changed. The minimum size of the mesh was 0.02 mm, and the grid number was about more than 11 thousand. In order to analyze the radiant heat performance of ballast fin, the aspect ratio of fin was 1.00(2 mm:2 mm), 1.80(1.5 mm:2.7 mm), and 0.56(2.7 mm:1.5 mm) respectively; that the heat transfer area was constantly 0.4 mm 2 . The numerical condition was that heat flux was constantly 1×10 5 W/m 2 , and measuring times were 0.1 second, 0.2 second, 0.5 second, 2 seconds, 5 seconds and 10 seconds respectively. The temperature values of fin at the 1.00 and 1.80 of aspect ratios were extremely large when heat flux time was 10 seconds. As a result, the maximum value of radiant heat performance of ballast fin appeared to the aspect ratio of 1.80.
목차
1. 서론
2. 실험
2.1 실험장치 구성 및 방법
3. 수치해석
3.1 지배방정식
3.2 해석방법 및 경계조건
3.3 격자 의존성 평가(Grid dependency test)
3.4 안정기의 격자구성 및 해석영역
4. 결과 및 분석
4.1 열유속 시간변화에 따른 핀의 온도특성
4.2 핀의 종횡비에 따른 방열성능
5. 결론
후기
References