Two-phase flow and heat transfer

Abstract

This study deals with heat transfer in horizontal, inclined and vertical tubes. The liquid and gas phases are intermittent and different entities. Several questions are addressed such as the local fluctuation of wall temperature, difference between temperatures of the upper and lower parts of the tube wall, heat transfer coefficient and its dependence on the peripheral position in an intermittent flow. The results of the study provides a detailed knowledge of the bubble size, frequency, and velocity, as depending on the flow rates of both phases.