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Proceedings Papers

Study on the Flow Distribution Around a Bathtub Vortex in a Cylindrical Vessel

S. Sakai, H. Madarame, K. Okamoto
Proc. ASME. IMECE97, Nuclear Engineering, 81-86, November 16–21, 1997
Paper No: IMECE1997-0610
https://doi.org/10.1115/IMECE1997-0610
View Paper titled, Study on the Flow Distribution Around a Bathtub Vortex in a Cylindrical Vessel
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Topics: Flow (Dynamics), Vessels, Vortices, Inks, Lasers, Open channels (Hydraulics), Particulate matter, Pipes, Velocimeters
Proceedings Papers

Combination of Holographic Interferometry and Digital Speckle Tomography for Analysis of Three-Dimensional Density Distributions

H. S. Ko, K. Okamoto, H. Madarame
Proc. ASME. IMECE2001, Heat Transfer: Volume 7 — Heat Transfer in Electronic Equipment, Student Research, and Visualization Techniques, 345, November 11–16, 2001
Paper No: IMECE2001/HTD-24413
https://doi.org/10.1115/IMECE2001/HTD-24413
View Paper titled, Combination of Holographic Interferometry and Digital Speckle Tomography for Analysis of Three-Dimensional Density Distributions
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Topics: Density, Holographic interferometry, Carbon dioxide, Flow (Dynamics), Nozzles, Laser beams, Lasers, Transients (Dynamics), Waves
Proceedings Papers

Visualization of Supercritical Carbondioxide Pseudo-Boiling Inside a Rectangular Channel

K. Sakurai, H. S. Ko, K. Okamoto, H. Madarame
Proc. ASME. IMECE2001, Heat Transfer: Volume 7 — Heat Transfer in Electronic Equipment, Student Research, and Visualization Techniques, 343-344, November 11–16, 2001
Paper No: IMECE2001/HTD-24412
https://doi.org/10.1115/IMECE2001/HTD-24412
View Paper titled, Visualization of Supercritical Carbondioxide Pseudo-Boiling Inside a Rectangular Channel
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Topics: Boiling, Forced convection, Nuclear reactors, Supercritical fluids, Visualization, Water
Journal Articles

An Experimental Study on Flow Boiling Heat Transfer From a Downward-Facing Finned Surface and Its Effect on Critical Heat Flux

A. R. Khan, N. Erkan, K. Okamoto
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. February 2018, 140(2): 021501.
Paper No: HT-16-1608
https://doi.org/10.1115/1.4037154
Published Online: August 29, 2017
View Article titled, An Experimental Study on Flow Boiling Heat Transfer From a Downward-Facing Finned Surface and Its Effect on Critical Heat Flux
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Topics: Boiling, Critical heat flux, Flow (Dynamics), Heat transfer, Heat transfer coefficients
Proceedings Papers

Fundamental Wave Process in Narrow Tubes for Micro Wave Rotor Application

K. Okamoto, T. Nagashima
Proc. ASME. IMECE2007, Volume 15: Sustainable Products and Processes, 25-33, November 11–15, 2007
Paper No: IMECE2007-43338
https://doi.org/10.1115/IMECE2007-43338
View Paper titled, Fundamental Wave Process in Narrow Tubes for Micro Wave Rotor Application
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Topics: Rotors, Waves, Shock waves, Visualization, Boundary layers, Design, Energy dissipation, Flow (Dynamics), Friction, Laser Doppler anemometry
Proceedings Papers

Bubble Breakup Phenomena in a Venturi Tube

A. Fujiwara, K. Okamoto, K. Hashiguchi, J. Peixinho, S. Takagi, Y. Matsumoto
Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 553-560, July 30–August 2, 2007
Paper No: FEDSM2007-37243
https://doi.org/10.1115/FEDSM2007-37243
View Paper titled, Bubble Breakup Phenomena in a Venturi Tube
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Topics: Bubbles, Venturi tubes
Proceedings Papers

Application of Image Analysis With Noise Removal for Supercritical CO2

J. Ota, K. Sakurai, K. Okamoto, H. Madarame
Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 4, 1011-1016, April 14–18, 2002
Paper No: ICONE10-22755
https://doi.org/10.1115/ICONE10-22755
View Paper titled, Application of Image Analysis With Noise Removal for Supercritical CO2
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Topics: Noise (Sound), Supercritical carbon dioxide, Visualization, Supercritical fluids, Errors, Forced convection, Lasers, Nuclear reactors, Thermofluids, Water
Proceedings Papers

Numerical Investigation of Bifurcation in Water Column Oscillator

K. Kawamata, Y. Morimoto, K. Okamoto, H. Madarame
Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 4, 1017-1023, April 14–18, 2002
Paper No: ICONE10-22756
https://doi.org/10.1115/ICONE10-22756
View Paper titled, Numerical Investigation of Bifurcation in Water Column Oscillator
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Topics: Bifurcation, Water, Valves, Noise (Sound), Numerical analysis
Proceedings Papers

Effect of Spray Angle in Spray Cooling Thermal Management of Electronics

J. Schwarzkopf, T. Cader, K. Okamoto, B. Q. Li, B. Ramaprian
Proc. ASME. HT-FED2004, Volume 4, 423-431, July 11–15, 2004
Paper No: HT-FED2004-56414
https://doi.org/10.1115/HT-FED2004-56414
View Paper titled, Effect of Spray Angle in Spray Cooling Thermal Management of Electronics
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Topics: Cooling, Electronics, Sprays, Thermal management, Coolants, Heat transfer, Algorithms, Finite element model, Flow (Dynamics), Heat flux
Proceedings Papers

Proper Orthogonal Decomposition of Round Jet Turbulence Measured by Dynamic PIV

W. Bi, Y. Sugii, K. Okamoto, H. Madarame
Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 2337-2343, July 6–10, 2003
Paper No: FEDSM2003-45217
https://doi.org/10.1115/FEDSM2003-45217
View Paper titled, Proper Orthogonal Decomposition of Round Jet Turbulence Measured by Dynamic PIV
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Topics: Principal component analysis, Turbulence, Flow (Dynamics), Particulate matter, Resolution (Optics)
Proceedings Papers

Velocity Measurement of Gas Flow Using Micro PIV Technique in Polymer Electrolyte Fuel Cell

Y. Sugii, K. Okamoto
Proc. ASME. ICNMM2006, ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B, 533-538, June 19–21, 2006
Paper No: ICNMM2006-96216
https://doi.org/10.1115/ICNMM2006-96216
View Paper titled, Velocity Measurement of Gas Flow Using Micro PIV Technique in Polymer Electrolyte Fuel Cell
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Topics: Electrolytes, Fuel cells, Gas flow, Polymers, Velocity measurement, Flow (Dynamics), Particulate matter, Chemical reactions, Density, Evaporation
Journal Articles

Properties of Friction-Stir Welded Aluminum Alloys 6111 and 5083

W. Gan, K. Okamoto, S. Hirano, K. Chung, C. Kim, R. H. Wagoner
Journal: Journal of Engineering Materials and Technology
Article Type: Research Papers
J. Eng. Mater. Technol. July 2008, 130(3): 031007.
https://doi.org/10.1115/1.2931143
Published Online: June 10, 2008
View Article titled, Properties of Friction-Stir Welded Aluminum Alloys 6111 and 5083
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Topics: Aluminum alloys, Welded joints, Welding, Temperature, Heat, Friction