Joonsik Hwang
Korea Advanced Institute of Science and Technology · 工学
研究室紹介
Professor Joonsik Hwang's research lab specializes in experimental and numerical investigations of heat transfer, fluid dynamics, and multiphase flows in advanced energy systems. Key research directions include turbulent and swirling flows in ducts, porous media heat transfer (e.g., aluminum foams and fuel cell components), and thermal management in gas turbine cooling passages and internal combustion engines. The lab focuses on understanding complex flow and heat transfer phenomena using advanced measurement techniques such as transient liquid crystal thermography, flow visualization, and thermal non-equilibrium modeling. Recent work also explores machine learning applications for predicting flash-boiling sprays in multi-hole gasoline injectors, highlighting an emerging interest in intelligent modeling of two-phase flows.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15Convective 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