Heat Transfer in Liquid Metals

Abstract

The problem of heat transfer in liquid metals is studied for the case of a fully developed turbulent flow in cylindrical pipes of constant diameter, the fluid under consideration being heated (or cooled) by a constant and uniform heat input at the wall. In the analysis, the similarity theory between heat and momentum transfer is used. A theory is presented which gives the ratio of eddy diffusivities for heat and momentum transfer as a function of the Prandtl modulus. It is shown that heat transfer in liquid metals can be analyzed universally in terms of a dimensionless parameter called the “generalized Peclet modulus” and defined by the relation $NPe​*=(NRe​*)(NPr​*)=[NRe(f/2)1/2](NPrσ)$ Temperature profiles are presented and the limiting cases for N_Pr = 0 are studied.