비균일 벽면 온도가 원형 실린더에 충돌하는 고온 제트 유동 및 열전달에 미치는 영향

DOI QR코드

DOI QR Code

홍기혁;강신형
Hong, Gi-Hyeok;Gang, Sin-Hyeong

  • 발행 : 1997.07.01

초록

A buoyant jet flow impinging on a circular cylinder is investigated including heat conduction through the cylinder. Temperature and flow fields are obtained by an iterative method, and the effects of the non-uniform wall temperature on the flow and heat transfer are analyzed. Effects of three-dimensionality and the traversing of the jet are also included. Nusselt number over the cylinder surface for the conjugate case is relatively small as compared with the constant wall temperature case due to the small temperature gradient. As the conductivity of the cylinder becomes lower, Nusselt number decreases due to the reduced temperature gradient. Increasing jet traversing speed causes the surface temperature of the cylinder to decrease, which increases local Nusselt number over the surface.

키워드

원형 실린더;유한체적법;충돌하는 고온의 층류 제트;비균일 벽면 온도;3차원 유동;열영동