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Proceedings Papers

Turbulent Boundary Layer of Vapor Phase on a Wavy Falling-Film Condensation of Steam-Air Mixture

Su-Ki Park, Moohwan Kim
Proc. ASME. IMECE97, Fluids Engineering, 131-140, November 16–21, 1997
Paper No: IMECE1997-0764
DOI: https://doi.org/10.1115/IMECE1997-0764
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Topics: Boundary layer turbulence, Condensation, Steam, Vapors
Proceedings Papers

Behavior of Single Bubble Growth With Constant Wall Temperatures Controlled by a Microscale Heater Array

Hanchoon Lee, Younggeun Son, Byung Do Oh, Sungwon Bae, Moohwan Kim
Proc. ASME. IMECE2001, Heat Transfer: Volume 3 — Fluid-Physics and Heat Transfer for Macro- and Micro-Scale Gas-Liquid and Phase-Change Flows, 211-220, November 11–16, 2001
Paper No: IMECE2001/HTD-24217
DOI: https://doi.org/10.1115/IMECE2001/HTD-24217
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Topics: Bubbles, Microscale devices, Wall temperature, Heat flux, Nucleate boiling, Computer simulation, Data acquisition, Heating, Nucleate pool boiling, Resolution (Optics)
Proceedings Papers

The Pressure Drop and Dynamic Contact Angle of Motion of Triple-Lines in Hydrophobic Microchannels

Dongin Yu, Chiwoong Choi, Moohwan Kim
Proc. ASME. ICNMM2010, ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B, 1453-1458, August 1–5, 2010
Paper No: FEDSM-ICNMM2010-30677
DOI: https://doi.org/10.1115/FEDSM-ICNMM2010-30677
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Topics: Microchannels, Pressure drop, Slug flows, Fluids, Liquid films, Water, Ethanol, Two-phase flow
Proceedings Papers

Aspect Ratio Effect on Adiabatic Two-Phase Flow in Rectangular Microchannels

Chiwoong Choi, DongIn Yu, Moohwan Kim
Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 101-109, December 18–21, 2009
Paper No: MNHMT2009-18152
DOI: https://doi.org/10.1115/MNHMT2009-18152
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Topics: Microchannels, Two-phase flow, Microelectromechanical systems, Pressure drop, Bubbles, Corners (Structural elements), Flow (Dynamics), Gates (Closures), Glass, Hydraulic drive systems
Proceedings Papers

Bubble Dynamics and Pressure Drop of a Single Bubble in a Rectangular Microchannel

Chiwoong Choi, DongIn Yu, Moohwan Kim
Proc. ASME. ICNMM2009, ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, 1069-1076, June 22–24, 2009
Paper No: ICNMM2009-82104
DOI: https://doi.org/10.1115/ICNMM2009-82104
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Topics: Bubbles, Dynamics (Mechanics), Microchannels, Pressure drop, Bubbly flow, Flow (Dynamics), Glass, Image processing, Microscopes, Photochromic materials
Proceedings Papers

Visualization of Water Distribution in Operating PEMFC Using X-Ray Microscopy

Jongrok Kim, Junho Je, Massoud Kaviany, Sang Young Son, MooHwan Kim
Proc. ASME. ICNMM2009, ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, 337-340, June 22–24, 2009
Paper No: ICNMM2009-82233
DOI: https://doi.org/10.1115/ICNMM2009-82233
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Topics: Microscopy, Proton exchange membrane fuel cells, Visualization, Water distribution, X-rays, Current density, Electric current, Gas diffusion layers, Resolution (Optics)
Proceedings Papers

Experimental Approaches for Distribution and Behavior of Water in Gas Diffusion Layer Using Neutron and X-Ray Imaging Techniques

TaeJoo Kim, JongRok Kim, CheulMuu Sim, Massound Kaviany, SangYoung Son, MooHwan Kim
Proc. ASME. FUELCELL2008, ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, 977-983, June 16–18, 2008
Paper No: FuelCell2008-65254
DOI: https://doi.org/10.1115/FuelCell2008-65254
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Topics: Experimental methods, Gas diffusion layers, Neutrons, Water, X-ray imaging, Imaging, Proton exchange membrane fuel cells, Water distribution, Porous materials, Resolution (Optics)
Proceedings Papers

Wettability Effect on Flow Boiling in an MEMS-Based Single Glass Microchannel

Chiwoong Choi, Cheol Huh, Dongeok Kim, Moohwan Kim
Proc. ASME. ICNMM2008, ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 635-642, June 23–25, 2008
Paper No: ICNMM2008-62254
DOI: https://doi.org/10.1115/ICNMM2008-62254
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Topics: Boiling, Flow (Dynamics), Glass, Microchannels, Microelectromechanical systems, Hydrophobicity, Heat transfer, Manufacturing, Microscopes, Self-assembly