Ahmed Kouidri, Brahim Madani, B Roubi, A Hamadouche
الملخص العربي
The upward forced convection between two smooth vertical plates is investigated experimentally. The aim of this work is the study of the local heat transfer phenomena. Concerning experimentation: the n-pentane is used as a working fluid, the independent variables are velocity in the range from 0.04 m/s to 0.086 m/s and the heating power with values between 1.8 and 7.36 W/cm2. The results show that the local Nusselt number distribution is not uniform along the channel, however a uniformity is observed for the mean Nusselt number for Reynolds number under 1600. A new correlation for local fluid temperature is established as a function of local wall temperature. The sub-boiling regime has cooled the wall's temperature; therefore, the local heat transfer coefficient increased. The thermal equilibrium study showed that for the critical Reynolds number less than 1500; the fluid absorbed almost all the heat flux generated by the heater cartridges.
أحمد قويدري | Ahmed Kouidri | 7437