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Proceedings Papers

Pressure Drop for Single- and Two-Phase Flows Through a Return Bend in Horizontal Rectangular Microchannel and Minichannel

Akimaro Kawahara, Michio Sadatomi, Shinichi Miyagawa, Mohamed H. Mansour

Proc. ASME. ICNMM2015, ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels, V001T04A068, July 6–9, 2015

Paper No: ICNMM2015-48721

DOI: https://doi.org/10.1115/ICNMM2015-48721

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Topics: Microchannels, Pressure drop, Two-phase flow, Pressure, Ethanol, Flow (Dynamics), Nitrogen, Surfactants, Water

Proceedings Papers

Investigation of Characteristics of Gas-Liquid Two-Phase Flows in a Rectangular Microchannel With Return Bends

Akimaro Kawahara, Michio Sadatomi, Hideki Matsuo, Satoshi Shimokawa

Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 2461-2471, July 24–29, 2011

Paper No: AJK2011-10011

DOI: https://doi.org/10.1115/AJK2011-10011

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Topics: Microchannels, Two-phase flow, Bubbles, Porosity, Ethanol, Slug flows, Flow (Dynamics), Junctions, Nitrogen, Scaling laws (Mathematical physics)

Proceedings Papers

Study of Interfacial Friction Force for Bubble Flows in a 2×1 Rods Channel Simplifying BWR

Akimaro Kawahara, Michio Sadatomi, Yutaro Nakamoto, Takatoshi Masuda

Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 4, Parts A and B, 1243-1252, May 17–21, 2010

Paper No: ICONE18-30270

DOI: https://doi.org/10.1115/ICONE18-30270

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Topics: Boiling water reactors, Bubbly flow, Friction, Rods, Drag (Fluid dynamics), Water, Bubbles, Constitutive equations, Dimensionless numbers, Flow (Dynamics)

Journal Articles

Study of Interfacial Friction Force for Bubble Flows in a 2 × 1 Rod Channel Simplifying BWR

Akimaro Kawahara, Michio Sadatomi, Yutaro Nakamoto, Takatoshi Masuda

J. Eng. Gas Turbines Power. May 2011, 133(5): 052905.

DOI: https://doi.org/10.1115/1.4002404

Published Online: December 13, 2010

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Topics: Bubbles, Bubbly flow, Drag (Fluid dynamics), Friction, Flow (Dynamics), Porosity, Fluids, Water

Proceedings Papers

Characteristics of Two-Phase Flows in a Rectangular Microchannel With a T-Junction Type Gas-Liquid Mixer

Akimaro Kawahara, Michio Sadatomi, Keitaro Nei, Hideki Matsuo, Takatoshi Masuda

Proc. ASME. ICNMM2009, ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, 1133-1140, June 22–24, 2009

Paper No: ICNMM2009-82217

DOI: https://doi.org/10.1115/ICNMM2009-82217

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Topics: Junctions, Microchannels, Two-phase flow, Bubbles, Porosity, Pressure drop, Ethanol, Flow (Dynamics), Friction, Nitrogen

Proceedings Papers

Effects of Surface Tension on Two-Phase Void Drift Between Triangle Tight Lattice Subchannels

Akimaro Kawahara, Michio Sadatomi, Tatsuya Higuchi

Proc. ASME. ICONE16, Volume 3: Thermal Hydraulics; Instrumentation and Controls, 569-578, May 11–15, 2008

Paper No: ICONE16-48574

DOI: https://doi.org/10.1115/ICONE16-48574

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Topics: Surface tension, Flow (Dynamics), Fluids, Water, Constitutive equations, Diffusion (Physics), Friction, Fuel rods, Nonequilibrium flow, Surfactants

Proceedings Papers

Characteristics of Single-Phase Flow in Microchannels

Peter M.-Y. Chung, Masahiro Kawaji, Akimaro Kawahara

Proc. ASME. FEDSM2002, Volume 1: Fora, Parts A and B, 1219-1228, July 14–18, 2002

Paper No: FEDSM2002-31211

DOI: https://doi.org/10.1115/FEDSM2002-31211

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Topics: Flow (Dynamics), Microchannels, Compressibility, Friction, Reynolds number, Boundary-value problems, Density, Gas flow, Glass, Laminar flow

Proceedings Papers

Effects of Liquid Properties on Pressure Drop of Two-Phase Gas-Liquid Flows Through a Microchannel

Akimaro Kawahara, Michio Sadatomi, Kazuya Okayama, Masahiro Kawaji

Proc. ASME. ICMM2003, 1st International Conference on Microchannels and Minichannels, 479-486, April 24–25, 2003

Paper No: ICMM2003-1058

DOI: https://doi.org/10.1115/ICMM2003-1058

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Topics: Flow (Dynamics), Microchannels, Pressure drop, Water, Ethanol, Two-phase flow, Friction, Nitrogen, Reynolds number, Surface tension

Proceedings Papers

Prediction of Flow Distribution in Gas-Liquid Two-Phase Annular Flows in a Rod Bundle Under Hydraulically Equilibrium Condition

Akimaro Kawahara, Michio Sadatomi, Nobutaka Aoyama, Satoru Tanoue

Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 1399-1406, July 6–10, 2003

Paper No: FEDSM2003-45369

DOI: https://doi.org/10.1115/FEDSM2003-45369

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Topics: Equilibrium (Physics), Flow (Dynamics), Fuel rods, Boiling water reactors, Fluids, Pressure, Shear (Mechanics), Stress, Two-phase flow

Proceedings Papers

Flow Distribution and Slug Flow Characteristics for Hydraulically Equilibrium Air-Water Two-Phase Flows in a Vertical 2×3 Rod Channel

Keiko Kano, Michio Sadatomi, Akimaro Kawahara, Tsukasa Kuno

Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 1407-1414, July 6–10, 2003

Paper No: FEDSM2003-45370

DOI: https://doi.org/10.1115/FEDSM2003-45370

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Topics: Equilibrium (Physics), Flow (Dynamics), Slug flows, Two-phase flow, Water, Bubbles, Fuel rods, Boiling water reactors, Coolants, Fluids

Proceedings Papers

Two-Phase Flow Through Square and Circular Microchannels: Effect of Channel Geometry

Peter M.-Y. Chung, Masahiro Kawaji, Akimaro Kawahara, Yuichi Shibata

Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 1459-1467, July 6–10, 2003

Paper No: FEDSM2003-45377

DOI: https://doi.org/10.1115/FEDSM2003-45377

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Topics: Geometry, Microchannels, Two-phase flow

Proceedings Papers

Effect of Channel Diameter and Liquid Property on Void Fraction in Adiabatic Two-Phase Flow Through Microchannels

Masahiro Kawaji, Akimaro Kawahara, Peter M.-Y. Chung, Michio Sadatomi, Kazuya Okayama

Proc. ASME. ICMM2004, ASME 2nd International Conference on Microchannels and Minichannels, 381-388, June 17–19, 2004

Paper No: ICMM2004-2359

DOI: https://doi.org/10.1115/ICMM2004-2359

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Topics: Microchannels, Porosity, Two-phase flow, Water, Ethanol, Nitrogen, Fluids, Surface tension, Viscosity

Proceedings Papers

Assessment of Void Fraction Correlations for Adiabatic Two-Phase Flows in Microchannels

Akimaro Kawahara, Michio Sadatomi, Masahiro Kawaji, Kazuya Okayama, P. M.-Y. Chung

Proc. ASME. ICMM2005, ASME 3rd International Conference on Microchannels and Minichannels, Parts A and B, 561-568, June 13–15, 2005

Paper No: ICMM2005-75031

DOI: https://doi.org/10.1115/ICMM2005-75031

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Topics: Microchannels, Porosity, Two-phase flow

Journal Articles

Effects of Surface Tension on Two-Phase Void Drift Between Triangle Tight Lattice Subchannels

Akimaro Kawahara, Michio Sadatomi, Tatsuya Higuchi

J. Eng. Gas Turbines Power. January 2009, 131(1): 012903.

DOI: https://doi.org/10.1115/1.2983083

Published Online: October 2, 2008

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Topics: Flow (Dynamics), Friction, Surface tension, Water, Fluids, Two-phase flow, Diffusion (Physics), Porosity

Proceedings Papers

Single- and Two-Phase Diversion Cross-Flows Between Triangle Tight Lattice Rod Bundle Subchannels: Data on Flow Resistance and Interfacial Friction Coefficients for the Cross-Flow

Tatsuya Higuchi, Akimaro Kawahara, Michio Sadatomi, Hiroyuki Kudo

Proc. ASME. ICONE14, Volume 4: Computational Fluid Dynamics, Neutronics Methods and Coupled Codes; Student Paper Competition, 547-554, July 17–20, 2006

Paper No: ICONE14-89215

DOI: https://doi.org/10.1115/ICONE14-89215

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Topics: Cross-flow, Flow (Dynamics), Friction, Fuel rods, Pressure, Two-phase flow, Atmospheric pressure, Fluids, Momentum, Porosity

Proceedings Papers

Measurement and Analysis of Void Fraction in a Multiple-Channel Simplifying Triangle Tight Lattice Rod Bundle

Michio Sadatomi, Akimaro Kawahara, Hiroyuki Kudo, Hiroshi Shirai

Proc. ASME. ICONE14, Volume 2: Thermal Hydraulics, 235-242, July 17–20, 2006

Paper No: ICONE14-89224

DOI: https://doi.org/10.1115/ICONE14-89224

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Topics: Fuel rods, Porosity, Water, Friction, Flow (Dynamics), Surface tension, Surfactants, Constitutive equations, Liquid films, Pipe flow

Journal Articles

Two-Phase Flow Through Square and Circular Microchannels—Effects of Channel Geometry

Peter M.-Y. Chung, Masahiro Kawaji, Akimaro Kawahara, Yuichi Shibata

J. Fluids Eng. July 2004, 126(4): 546–552.

DOI: https://doi.org/10.1115/1.1777227

Published Online: September 10, 2004

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Topics: Flow (Dynamics), Microchannels, Two-phase flow, Pressure drop, Porosity, Geometry, Water

Journal citation

NARROW

Pressure Drop for Single- and Two-Phase Flows Through a Return Bend in Horizontal Rectangular Microchannel and Minichannel

Investigation of Characteristics of Gas-Liquid Two-Phase Flows in a Rectangular Microchannel With Return Bends

Study of Interfacial Friction Force for Bubble Flows in a 2×1 Rods Channel Simplifying BWR

Study of Interfacial Friction Force for Bubble Flows in a 2 × 1 Rod Channel Simplifying BWR

Characteristics of Two-Phase Flows in a Rectangular Microchannel With a T-Junction Type Gas-Liquid Mixer

Effects of Surface Tension on Two-Phase Void Drift Between Triangle Tight Lattice Subchannels

Characteristics of Single-Phase Flow in Microchannels

Effects of Liquid Properties on Pressure Drop of Two-Phase Gas-Liquid Flows Through a Microchannel

Prediction of Flow Distribution in Gas-Liquid Two-Phase Annular Flows in a Rod Bundle Under Hydraulically Equilibrium Condition

Flow Distribution and Slug Flow Characteristics for Hydraulically Equilibrium Air-Water Two-Phase Flows in a Vertical 2×3 Rod Channel

Two-Phase Flow Through Square and Circular Microchannels: Effect of Channel Geometry

Effect of Channel Diameter and Liquid Property on Void Fraction in Adiabatic Two-Phase Flow Through Microchannels

Assessment of Void Fraction Correlations for Adiabatic Two-Phase Flows in Microchannels

Effects of Surface Tension on Two-Phase Void Drift Between Triangle Tight Lattice Subchannels

Single- and Two-Phase Diversion Cross-Flows Between Triangle Tight Lattice Rod Bundle Subchannels: Data on Flow Resistance and Interfacial Friction Coefficients for the Cross-Flow

Measurement and Analysis of Void Fraction in a Multiple-Channel Simplifying Triangle Tight Lattice Rod Bundle

Two-Phase Flow Through Square and Circular Microchannels—Effects of Channel Geometry

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