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Journal Articles

Dimensionless Profiles of Temperature and Steam Mass Fraction in Flows of Steam-Air Mixtures on a Flat Plate

Michio Murase, Tomonori Suzuki, Yoichi Utanohara, Toshiya Takaki
Journal: Journal of Nuclear Engineering and Radiation Science
Article Type: Research-Article
ASME J of Nuclear Rad Sci. January 2023, 9(1): 011401.
Paper No: NERS-22-1006
DOI: https://doi.org/10.1115/1.4054842
Published Online: July 19, 2022
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Topics: Flow (Dynamics), Steam, Temperature, Turbulence, Condensation, Flat plates, Boundary layer turbulence, Computational fluid dynamics, Computation
Journal Articles

Prediction Method for Condensation Heat Transfer in the Presence of Noncondensable Gas for Computational Fluid Dynamics Applications

Michio Murase, Yoichi Utanohara, Akio Tomiyama
Journal: Journal of Nuclear Engineering and Radiation Science
Article Type: Research-Article
ASME J of Nuclear Rad Sci. July 2022, 8(3): 031404.
Paper No: NERS-21-1097
DOI: https://doi.org/10.1115/1.4053051
Published Online: May 26, 2022
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Topics: Condensation, Heat transfer, Steam, Temperature, Temperature distribution, Computational fluid dynamics, Mass transfer, Flat plates
Proceedings Papers

Countercurrent Flow Limitation at Sharp-Edged Upper End in Vertical Pipes

Michio Murase, Koji Nishida, Akio Tomiyama
Proc. ASME. ICONE26, Volume 6A: Thermal-Hydraulics and Safety Analyses, V06AT08A006, July 22–26, 2018
Paper No: ICONE26-81039
DOI: https://doi.org/10.1115/ICONE26-81039
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Topics: Flow (Dynamics), Pipes, Uncertainty, Water
Journal Articles

Correlation of Interfacial Friction Coefficients for Predicting Countercurrent Flow Limitation at a Sharp-Edged Lower End of Vertical Pipes

Michio Murase, Takayoshi Kusunoki, Koji Nishida, Raito Goda, Akio Tomiyama
Journal: Journal of Nuclear Engineering and Radiation Science
Article Type: Research-Article
ASME J of Nuclear Rad Sci. July 2018, 4(3): 031001.
Paper No: NERS-17-1057
DOI: https://doi.org/10.1115/1.4039438
Published Online: May 16, 2018
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Topics: Computation, Flow (Dynamics), Pipes, Water, Friction, Steam, High pressure (Physics)
Proceedings Papers

RELAP5 Code Analysis of LSTF Small Break LOCA Tests With Steam Generator Intentional Depressurization and its Uncertainty Quantification by Monte Carlo Method and Wilks Formula Approach

Ikuo Kinoshita, Michio Murase
Proc. ASME. IMECE2016, Volume 6B: Energy, V06BT08A035, November 11–17, 2016
Paper No: IMECE2016-66638
DOI: https://doi.org/10.1115/IMECE2016-66638
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Topics: Boilers, Monte Carlo methods, Uncertainty quantification, Uncertainty, Accidents, Temperature, Accident management, Cladding systems (Building), Coolants, Experimental analysis
Journal Articles

Prediction Method of Countercurrent Flow Limitation in a Pressurizer Surge Line and Its Evaluation for a 1/10-Scale Model

Michio Murase, Yoichi Utanohara, Takayoshi Kusunoki, Dirk Lucas, Akio Tomiyama
Journal: Journal of Nuclear Engineering and Radiation Science
Article Type: Research Papers
ASME J of Nuclear Rad Sci. July 2016, 2(3): 031021.
Paper No: NERS-15-1164
DOI: https://doi.org/10.1115/1.4033629
Published Online: June 17, 2016
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Topics: Computation, Flow (Dynamics), Pipes, Simulation, Surges, Uncertainty, Water, Computer simulation, Floods
Journal Articles

Effects of Decay Heat Distribution on Water Temperature in a Spent Fuel Pit and Prediction Errors With a One-Region Model

Chihiro Yanagi, Michio Murase, Yoichi Utanohara
Journal: Journal of Nuclear Engineering and Radiation Science
Article Type: Research Papers
ASME J of Nuclear Rad Sci. July 2016, 2(3): 031001.
Paper No: NERS-15-1113
DOI: https://doi.org/10.1115/1.4032507
Published Online: June 17, 2016
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Topics: Computation, Heat, Water, Water temperature, Temperature, Spent nuclear fuels
Journal Articles

Countercurrent Flow Limitation in Slightly Inclined Pipes With Elbows

Michio Murase, Ikuo Kinoshita, Takayoshi Kusunoki, Dirk Lucas, Akio Tomiyama
Journal: Journal of Nuclear Engineering and Radiation Science
Article Type: Research Papers
ASME J of Nuclear Rad Sci. October 2015, 1(4): 041009.
Paper No: NERS-15-1019
DOI: https://doi.org/10.1115/1.4031032
Published Online: September 3, 2015
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Topics: Computation, Flow (Dynamics), Pipes, Surges, Water, Boundary-value problems, Drag (Fluid dynamics), Friction, Pressure
Journal Articles

Numerical Simulation of Temperature Distribution in a Containment Vessel of an Operating PWR Plant

Yoichi Utanohara, Michio Murase, Akihiro Masui, Ryo Inomata, Yuji Kamiya
Journal: Journal of Nuclear Engineering and Radiation Science
Article Type: Research Papers
ASME J of Nuclear Rad Sci. January 2015, 1(1): 011002.
Paper No: NERS-14-1004
DOI: https://doi.org/10.1115/1.4026389
Published Online: February 9, 2015
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Topics: Computer simulation, Flow (Dynamics), Pressurized water reactors, Temperature, Temperature distribution, Containment vessels, Heat, Simulation
Proceedings Papers

RELAP5 Code Analysis of LSTF Small Break LOCA Tests With Steam Generator Intentional Depressurization as an Accident Management Procedure: Investigation on Base Case Result Appropriate for the Best Estimate Plus Uncertainty (BEPU) Application

Ikuo Kinoshita, Toshihide Torige, Michio Murase, Yoshitaka Yoshida, Takeshi Takeda, Akira Satou, Hideo Nakamura
Proc. ASME. ICONE22, Volume 3: Next Generation Reactors and Advanced Reactors; Nuclear Safety and Security, V003T06A022, July 7–11, 2014
Paper No: ICONE22-30559
DOI: https://doi.org/10.1115/ICONE22-30559
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Topics: Accident management, Boilers, Uncertainty, Accidents, Condensation, Coolants, Flow (Dynamics), High pressure (Physics), Pressure, Simulation analysis
Proceedings Papers

Development of the PIRT for the Small-Break Loss-of-Coolant Accident With High Pressure Injection Failure

Ikuo Kinoshita, Minoru Yamada, Toshihide Torige, Michio Murase, Yoshitaka Yoshida
Proc. ASME. IMECE2013, Volume 6B: Energy, V06BT07A047, November 15–21, 2013
Paper No: IMECE2013-63682
DOI: https://doi.org/10.1115/IMECE2013-63682
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Topics: Accidents, Coolants, Failure, High pressure (Physics), Safety, Uncertainty, Accident management, Boilers, Boiling, Cladding systems (Building)
Proceedings Papers

Study on Heat Transfer From Hot Water to Cold Air With Evaporation

Tatsuya Yamaji, Tatsuya Hirota, Yasuo Koizumi, Michio Murase
Proc. ASME. IMECE2013, Volume 8C: Heat Transfer and Thermal Engineering, V08CT09A035, November 15–21, 2013
Paper No: IMECE2013-65820
DOI: https://doi.org/10.1115/IMECE2013-65820
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Topics: Evaporation, Heat transfer, Hot water, Heat flux, Flow (Dynamics), Air flow, Turbulence, Convection, Mass transfer, Temperature
Proceedings Papers

Study on Countercurrent Flow in a PWR Hot Leg Under Reflux Cooling

Noritoshi Minami, Michio Murase, Akio Tomiyama
Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 4, Parts A and B, 963-973, May 17–21, 2010
Paper No: ICONE18-30026
DOI: https://doi.org/10.1115/ICONE18-30026
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Topics: Cooling, Flow (Dynamics), Pressurized water reactors, Air flow, Computer simulation, Fluids, Friction, Pipes, Water, Ducts
Proceedings Papers

Comparison of CCFL Experiments Performed in Two Different Models of the Hot Leg of a PWR With Rectangular Cross-Section

Christophe Valle´e, Tobias Seidel, Dirk Lucas, Akio Tomiyama, Michio Murase
Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 4, Parts A and B, 1049-1058, May 17–21, 2010
Paper No: ICONE18-30089
DOI: https://doi.org/10.1115/ICONE18-30089
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Topics: Accidents, Condensers (steam plant), Cooling, Cross section (Physics), Design, Dimensions, Electromagnetic scattering, Floods, Flow (Dynamics), Fluids
Proceedings Papers

Numerical Calculations for Air-Water Tests on CCFL in Different-Scale Models of a PWR Hot Leg

Michio Murase, Ikuo Kinoshita, Yoichi Utanohara, Dirk Lucas, Christophe Valle´e, Akio Tomiyama
Proc. ASME. ICONE18, 18th International Conference on Nuclear Engineering: Volume 4, Parts A and B, 123-131, May 17–21, 2010
Paper No: ICONE18-29092
DOI: https://doi.org/10.1115/ICONE18-29092
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Topics: Pressurized water reactors, Water, Flow (Dynamics), Fluids, Steam
Proceedings Papers

Study on Cooling of Hot Water by Air Flow With Evaporation

Yasuo Koizumi, Yutaka Ebihara, Michio Murase
Proc. ASME. AJTEC2011, ASME/JSME 2011 8th Thermal Engineering Joint Conference, T10242, March 13–17, 2011
Paper No: AJTEC2011-44512
DOI: https://doi.org/10.1115/AJTEC2011-44512
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Topics: Air flow, Cooling, Evaporation, Hot water, Flow (Dynamics), Heat transfer, Convection, Water temperature, Reynolds number, Turbulence
Journal Articles

Comparison of Countercurrent Flow Limitation Experiments Performed in Two Different Models of the Hot Leg of a Pressurized Water Reactor With Rectangular Cross Section

Christophe Vallée, Tobias Seidel, Dirk Lucas, Akio Tomiyama, Michio Murase
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2011, 133(5): 052917.
DOI: https://doi.org/10.1115/1.4002884
Published Online: December 28, 2010
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Topics: Floods, Flow (Dynamics), Pipes, Pressurized water reactors, Test facilities, Water, Dimensions, Fluids, Boilers, Two-phase flow
Proceedings Papers

Numerical Calculations on Countercurrent Air-Water Flow in Small-Scale Models of a PWR Hot Leg Using a VOF Model

Michio Murase, Yoichi Utanohara, Ikuo Kinoshita, Noritoshi Minami, Akio Tomiyama
Proc. ASME. ICONE17, Volume 3: Thermal Hydraulics; Current Advanced Reactors: Plant Design, Construction, Workforce and Public Acceptance, 141-148, July 12–16, 2009
Paper No: ICONE17-75116
DOI: https://doi.org/10.1115/ICONE17-75116
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Topics: Flow (Dynamics), Pressurized water reactors, Water, Pipes, Two-phase flow, Boilers, Cooling, Heat, Steam, Transient analysis
Proceedings Papers

Development of PIRT and Verification of RELAP5 Void Model for Application to the Loss-of-RHR Event During Mid-Loop Operation

Hiroichi Nagumo, Yasuhiro Sasaki, Michio Murase, Yoshitaka Yoshida
Proc. ASME. ICONE16, Volume 3: Thermal Hydraulics; Instrumentation and Controls, 21-32, May 11–15, 2008
Paper No: ICONE16-48064
DOI: https://doi.org/10.1115/ICONE16-48064
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Topics: Cooling, Errors, Fuel rods, Geometry, Gravity (Force), Pressure, Pressurized water reactors, Reactor vessels, Risk, Safety
Proceedings Papers

Experiments on Air-Water Countercurrent Flow in a Rectangular Duct Simulating PWR Hot Leg

Noritoshi Minami, Daisuke Nishiwaki, Hironobu Kataoka, Akio Tomiyama, Shigeo Hosokawa, Michio Murase
Proc. ASME. ICONE16, Volume 3: Thermal Hydraulics; Instrumentation and Controls, 127-134, May 11–15, 2008
Paper No: ICONE16-48113
DOI: https://doi.org/10.1115/ICONE16-48113
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Topics: Ducts, Flow (Dynamics), Pressurized water reactors, Water, Air flow, Atmospheric pressure, Boilers, Heat, Inflow, Steam