Kim Hyungdae
Kyung Hee University · 工学
研究室紹介
Professor Kim Hyungdae's research lab specializes in advanced heat transfer phenomena, particularly focusing on nucleate boiling and critical heat flux (CHF) enhancement in nanofluids and structured surfaces. The lab investigates the interplay between surface micro/nanotexturing, nanoparticle deposition, and interfacial phenomena to understand and optimize boiling heat transfer performance. Key research directions include the role of surface wettability, porosity, and roughness at the nanoscale, as well as the development of in-situ diagnostic techniques such as laser interferometry and infrared thermometry for real-time microlayer analysis. The lab also explores fundamental mechanisms behind boiling crisis mitigation using microstructured and nanoparticle-coated surfaces.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15In recent quenching heat transfer studies of nanofluids, it was found that deposition of nanoparticles on a surface raises its Leidenfrost point (LFP) considerably [Kim et al., Int. J. Multiphase Flow 35, 427 (2009) and Kim et al., Int. J. Heat Mass Transfer 53, 1542 (2010)]. To probe the physical mechanism underlying this observation, the effects of surface properties on LFP of water droplets were studied, using custom-fabricated surfaces for which roughness height, wettability, and porosity we
CHF characteristics of nano- fluids were investigated with different volumetric concentrations of nanoparticles. Pool boiling experiments indicated that the application of nano-fluids, instead of pure water, as a cooling liquid significantly increased the CHF. SEM (scanning electron microscope) observations subsequent to the pool boiling experiments revealed that nanoparticles were coated on the heating surface during pool boiling of nano-fluids. In order to investigate the roles of nanoparticle
Nanofluids (suspensions of nanometer-sized particles in base fluids) have recently been shown to have nucleate boiling critical heat flux (CHF) far superior to that of the pure base fluid. Over the past decade, numerous experimental and analytical studies on the nucleate boiling CHF of nanofluids have been conducted. The purpose of this article is to provide an exhaustive review of these studies. The characteristics of CHF enhancement in nanofluids are systemically presented according to the eff
The pool boiling characteristics of water-based nanofluids with alumina and titania nanoparticles of 0.01 vol % were investigated on a thermally heated disk heater at saturated temperature and atmospheric pressure. The results confirmed the findings of previous studies that nanofluids can significantly enhance the critical heat flux (CHF), resulting in a large increase in the wall superheat. It was found that some nanoparticles deposit on the heater surface during nucleate boiling, and the surfa
On a visible-transparent boiling surface, the detailed geometry of a microlayer can be detected using a total reflection technique combined with laser interferometry. On an infrared-opaque boiling surface, the surface temperature and heat flux distribution can be obtained using a high-speed infrared thermometry technique. In the present study, an experimental technique to study heat transfer in the microlayer is described that permits the simultaneous use of the total reflection combined with la