垂直加熱平板群まわりに生じる自然対流の流動と伝熱

抄録

Experimental investigations have been carried out on natural convection around heated vertical plates in which heated plates and adiabatic plates are alternately placed on the same vertical plane. The test fluid was water at room temperature. The heated plates were heated with uniform heat fluxes. The lengths of heated vertical plate, L, were 10 and 15 mm, and the lengths of adiabatic plate, D, were changed as D = 5-50 mm. The flows over the plates and the surface temperatures of the heated plates were visualized with dye and liquid crystal thermometry, respectively. The results show that the flows over the heated vertical plates remain laminar. The local heat transfer coefficients were also measured. The non-dimensional heat transfer correlation on the average Nusselt numbers of the heated vertical plates were proposed using Nu_D (= h_m D/λ) and RaD^* (= gβqwD⁴/αλν).