水平平板上の自然・強制複合対流熱伝達

概要

論文の詳細を見る
In a forced laminar convection flow over a horizontal plate, there are heat transfer problems of combined natural and forced convection flow. In this report, the effects of forced laminar convection flow in a natural turbulent convection flow on a horizontal surface of a constant wall temperature is experimentaly examined, and the average heat transfer coefficient of combined convection flow is also compared with that of purely natural turbulent convection. As a result of experiment, it is shown that even in the case of purely natural convection, the value of average Nusselt number obtained is about 65 percent larger than the empirical value because of a flow separation near the edge of a horizontal surface, and the relation between Nusselt number and Rayleigh number for combined convection flow constitutes a characteristic feature of natural laminar convection. Therefore it becomes clear that the heat transfer coefficient of combined convection flow with a forced laminar one is not always larger than that of purely natural convection flow.
長崎大学工学部,Faculty of Engineering, Nagasaki Universityの論文