Abstract
Abstract This paper presents an experimental and analytical study of non-isothermal liquid flow in sintered fiber metallic porous media. The purpose of the paper is to present a self-consistent procedure for determining heat-transfer characteristics of porous metals. The analysis uses the volume averaged conservation equations. Darcy's law is assumed to hold and local thermal equilibrium is assumed to exist between the solid and liquid phases. The coupled conservation equations are solved for one and two dimensional temperature distributions using finite difference schemes. Different flow and thermal boundary conditions are used. The experiments involve the measurement of temperature distributions and effective thermal conductivities of water saturated copper and nickel sintered fiber metal wicks. The effective thermal conductivities are measured using the steady-state method of comparison and the resulting values are used in the volume averaged energy equation. The measured temperature distributions and those predicted by the analysis show good agreement. Thus the procedure presented in this paper for predicting heat transfer seems to be valid.
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