Hanseok Ko
Sungkyunkwan University · 工学
研究室紹介
Professor Hanseok Ko's research lab specializes in advanced fluid dynamics and multiphase flow characterization, with a strong focus on microscale and transient flow phenomena. The lab develops and applies cutting-edge visualization and measurement techniques—such as digital speckle tomography, particle image velocimetry (PIV), and laser-induced fluorescence—to study complex heat and mass transfer processes in microfluidic systems and biological or industrial droplets. Key research directions include Marangoni convection, inkjet dynamics, and energy-efficient transport in thin films and microchannels. The lab emphasizes non-intrusive, high-resolution diagnostics for real-time analysis of density, velocity, and temperature fields in dynamic systems.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15This study aimed to investigate the effect of metabolizable energy (ME) levels and exogenous emulsifier supplementation on growth performance, apparent ileal digestibility (AID), body composition, and carcass yield in broilers. The experiment was designed as a 2 × 2 factorial arrangement with ME levels (control ME vs. reduced 100 kcal/kg ME) and exogenous emulsifier supplementation (0 vs. 0.05 %). A total of 1,000 one-day-old male Cobb 500 broilers were randomly allocated into 4 treatments with
Experimental and numerical analysis of the drop-on-demand inkjet was conducted to determine the jetting characteristics and meniscus motion under the control of the ink supply pressure. A single transparent nozzle inkjet head driven by a piezoelectric actuator was used to eject droplets. To control ink supply pressure, the pressure of the air in the reservoir was regulated by a dual valve pressure controller. The inkjet performance and the motion of the meniscus were evaluated by visualization a
A form of digital speckle tomography has been proposed for calculating transient three-dimensional density distributions. Multiple CCD images have captured movements of speckles due to the variation in density among three angles of view simultaneously and instantaneously so that asymmetrical and transient flows can be measured. Initially, the variations in density of one-nozzle and two-nozzle test sections have been investigated by the use of a cross-correlation method involving the speckle disp