일정벽면열유속의 가열조건의 갖는 거친 동심환형관내의 난류열전달

Turbulent Heat Transfer in Rough Concentric Annuli With Heating Condition of Constant Wal Heat Flux

  • 손유식 (경상대학교 기관공학과 해양산업연구소)
  • 발행 : 1999.01.01

초록

The fully developed turbulent momentum and heat transfer induced by the roughness elements on the outer wall surfaces in concentric annuli are analytically studied on the basis of a modified turbu-lence model. The resulting momentum and heat transfer are discussed in terms of various parame-ters such as the radius ratio the roughness density Reynolds number and Prandtl number accord-ing to the heating condition. The study shows that certain artificial roughness elements may be used to enhance heat transfer rates with advantage from the overall efficiency point of view.

키워드

참고문헌

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