A Study on Numerical Analysis for Thermal Fluid Including the Effect of Wall

Abstract

Recently, CFD is used on a heat exchanger's design for cutting cost. A constant temperature treatment for boundary condition using design process of a heat exchanger is often imposed on a heated or cooled wall. In the case of caluculating heat conduction of metal, harmonic mean is applied for valuation of heat conduction between fluid and solid. In this study, boundary condition is applied not the harmonic mean of thermal conductivity but the way of calculating thewall temperature for an improvement in analytical accuracy.