황준식 교수

Convective heat transfer and friction drag in a duct inserted with aluminum foams have been studied experimentally. The combined effects of foam porosity (ε=0.7, 0.8, and 0.95) and flow Reynolds number (1900⩽Re⩽7800) are examined. Frictional drags for flow across the aluminum foam are measured by pressure taps, while interstitial heat transfer coefficients in the aluminum foam are determined using a transient single-blow technique with a thermal non-equilibrium two-equation model. Solid material

A thermal-electrochemical coupled model is presented to predict electrochemical and heat transfer behaviors in a proton exchange membrane (PEM) fuel cell. The Brinkman extension to Darcy flow describes the fluid flow characteristics in the porous electrodes. The Stefan-Maxwell correlations together with the Bruggemann modification illustrate the multispecies diffusion in the porous electrode. A two-equation approach is used to account for the local thermal nonequilibrium between the solid matric