- P-N 근사법을 이용한 원관주위 층류 경계층내 조합 열전달 전달 특성 해석
- ㆍ 저자명
- 이종원,이창수
- ㆍ 간행물명
- 韓國舶用機關學會誌
- ㆍ 권/호정보
- 1995년|19권 2호|pp.10-19 (10 pages)
- ㆍ 발행정보
- 한국마린엔지니어링학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Heat trnasfer for absorbing and emitting media in laminar layer along the cylinders has been analyzed. Governing equation are transformed to local nonsimilarity equations by the dimensional analysis. The effects of the Stark number, Prandtl number, Optical radius and wall emissivity are mainly investigated. For the formal solution a numerical integration is performed and the results are compared with those obtained by P-1 and P-3 approximation. The results show that boundary layers consist of conduction-convection-radiation layer near the wall and convection-radiation layer far from the wall. As the Stark number of wall emissivity increases the local radiative heat flux is increased. The Pradtl number or curvature variations do not affect the radiative heat flux from the wall, but The Prandtl number or wall emissivity variations affect the conduction heat flux. Consequently the total heat flux from the wall are affected by the Prandtl number or wall emissivity variation.