1-20 of 38
Akio Tomiyama
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. July 2022, 8(3): 031404.
Paper No: NERS-21-1097
https://doi.org/10.1115/1.4053051
Published Online: May 26, 2022
View Article titled, Prediction Method for Condensation Heat Transfer in the Presence of Noncondensable Gas for Computational Fluid Dynamics Applications
Open the PDF for Prediction Method for Condensation Heat Transfer in the Presence of Noncondensable Gas for Computational Fluid Dynamics Applications in another window
Topics: Condensation, Heat transfer, Steam, Temperature, Temperature distribution, Computational fluid dynamics, Mass transfer, Flat plates
Proceedings Papers

A Comparison of the Flow Structure in a Normal Triangular Tube Array Obtained Based on the SFV Technique and on a CFD Analysis

Douglas Martins Rocha, Fabio Toshio Kanizawa, Kosuke Hayashi, Shigeo Hosokawa, Akio Tomiyama, Gherhardt Ribatski
Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T02A012, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20251
https://doi.org/10.1115/FEDSM2020-20251
View Paper titled, A Comparison of the Flow Structure in a Normal Triangular Tube Array Obtained Based on the SFV Technique and on a CFD Analysis
Open the PDF for A Comparison of the Flow Structure in a Normal Triangular Tube Array Obtained Based on the SFV Technique and on a CFD Analysis in another window
Topics: Computational fluid dynamics, Filters, Flow (Dynamics)
Proceedings Papers

Numerical Simulations of Flows in Cerebral Aneurysms Using the Lattice Boltzmann Method

Susumu Osaki, Kosuke Hayashi, Hidehito Kimura, Eiji Kohmura, Akio Tomiyama
Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A015, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20175
https://doi.org/10.1115/FEDSM2020-20175
View Paper titled, Numerical Simulations of Flows in Cerebral Aneurysms Using the Lattice Boltzmann Method
Open the PDF for Numerical Simulations of Flows in Cerebral Aneurysms Using the Lattice Boltzmann Method in another window
Topics: Aneurysms, Computer simulation, Flow (Dynamics), Lattice Boltzmann methods
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
Publisher: American Society of Mechanical Engineers
Paper No: ICONE26-81039
https://doi.org/10.1115/ICONE26-81039
View Paper titled, Countercurrent Flow Limitation at Sharp-Edged Upper End in Vertical Pipes
Open the PDF for Countercurrent Flow Limitation at Sharp-Edged Upper End in Vertical Pipes in another window
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
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. July 2018, 4(3): 031001.
Paper No: NERS-17-1057
https://doi.org/10.1115/1.4039438
Published Online: May 16, 2018
View Article titled, Correlation of Interfacial Friction Coefficients for Predicting Countercurrent Flow Limitation at a Sharp-Edged Lower End of Vertical Pipes
Open the PDF for Correlation of Interfacial Friction Coefficients for Predicting Countercurrent Flow Limitation at a Sharp-Edged Lower End of Vertical Pipes in another window
Topics: Computation, Flow (Dynamics), Pipes, Water, Friction, Steam, High pressure (Physics)
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
Publisher: ASME
Article Type: Research Papers
ASME J of Nuclear Rad Sci. July 2016, 2(3): 031021.
Paper No: NERS-15-1164
https://doi.org/10.1115/1.4033629
Published Online: June 17, 2016
View Article titled, Prediction Method of Countercurrent Flow Limitation in a Pressurizer Surge Line and Its Evaluation for a 1/10-Scale Model
Open the PDF for Prediction Method of Countercurrent Flow Limitation in a Pressurizer Surge Line and Its Evaluation for a 1/10-Scale Model in another window
Topics: Computation, Flow (Dynamics), Pipes, Simulation, Surges, Uncertainty, Water, Computer simulation, Floods
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
Publisher: ASME
Article Type: Research Papers
ASME J of Nuclear Rad Sci. October 2015, 1(4): 041009.
Paper No: NERS-15-1019
https://doi.org/10.1115/1.4031032
Published Online: September 3, 2015
View Article titled, Countercurrent Flow Limitation in Slightly Inclined Pipes With Elbows
Open the PDF for Countercurrent Flow Limitation in Slightly Inclined Pipes With Elbows in another window
Topics: Computation, Flow (Dynamics), Pipes, Surges, Water, Boundary-value problems, Drag (Fluid dynamics), Friction, Pressure
Proceedings Papers

Mass Transfer From Single Carbon Dioxide Bubbles in Contaminated Water

Jiro Aoki, Kosuke Hayashi, Shogo Hosoda, Shigeo Hosokawa, Akio Tomiyama
Proc. ASME. FEDSM2014, Volume 1D, Symposia: Transport Phenomena in Mixing; Turbulent Flows; Urban Fluid Mechanics; Fluid Dynamic Behavior of Complex Particles; Analysis of Elementary Processes in Dispersed Multiphase Flows; Multiphase Flow With Heat/Mass Transfer in Process Technology; Fluid Mechanics of Aircraft and Rocket Emissions and Their Environmental Impacts; High Performance CFD Computation; Performance of Multiphase Flow Systems; Wind Energy; Uncertainty Quantification in Flow Measurements and Simulations, V01DT32A002, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21103
https://doi.org/10.1115/FEDSM2014-21103
View Paper titled, Mass Transfer From Single Carbon Dioxide Bubbles in Contaminated Water
Open the PDF for Mass Transfer From Single Carbon Dioxide Bubbles in Contaminated Water in another window
Topics: Bubbles, Carbon dioxide, Mass transfer, Water, Surfactants, Pipes, Engineering simulation, Reynolds number, Shapes, Simulation
Proceedings Papers

Spatial Filter Velocimetry Based on Time-Series Particle Images

Shigeo Hosokawa, Hiroki Sakamoto, Akio Tomiyama
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 2, Fora, 39-46, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-31005
https://doi.org/10.1115/AJK2011-31005
View Paper titled, Spatial Filter Velocimetry Based on Time-Series Particle Images
Open the PDF for Spatial Filter Velocimetry Based on Time-Series Particle Images in another window
Topics: Filters, Particulate matter, Time series, Turbulence, Ducts, Velocity measurement
Proceedings Papers

Influence of Dissolved Gas Concentration on Diameter and Number Density of Micro-Bubbles

Yasunari Maeda, Chihiro Taya, Shigeo Hosokawa, Akio Tomiyama, Yoshihiro Ito, Naoki Shibata
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 2579-2585, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-10035
https://doi.org/10.1115/AJK2011-10035
View Paper titled, Influence of Dissolved Gas Concentration on Diameter and Number Density of Micro-Bubbles
Open the PDF for Influence of Dissolved Gas Concentration on Diameter and Number Density of Micro-Bubbles in another window
Topics: Density, Microbubbles, Cavitation, Bubbles, Nozzles, Atmospheric pressure, Flow (Dynamics), Generators
Proceedings Papers

Liquid Mixing in a Bubble Column

Naoki Shimada, Rina Saiki, Abhinav Dhar, Akio Tomiyama
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 1585-1592, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-04006
https://doi.org/10.1115/AJK2011-04006
View Paper titled, Liquid Mixing in a Bubble Column
Open the PDF for Liquid Mixing in a Bubble Column in another window
Topics: Bubbles, Turbulence, Design, Computer simulation, Errors, Flow (Dynamics), Fluids, Shear (Mechanics), Transients (Dynamics)
Proceedings Papers

Interface Tracking Simulation of Mass Transfer From a Dissolving Bubble

Kosuke Hayashi, Akio Tomiyama
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 1593-1601, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-04007
https://doi.org/10.1115/AJK2011-04007
View Paper titled, Interface Tracking Simulation of Mass Transfer From a Dissolving Bubble
Open the PDF for Interface Tracking Simulation of Mass Transfer From a Dissolving Bubble in another window
Topics: Bubbles, Mass transfer, Simulation, Carbon dioxide, Water, Nitrogen, Oxygen, Evaporation, Pipes
Proceedings Papers

Numerical Simulation of Bubbles Contaminated With Soluble Surfactant

Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 1641-1650, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-04019
https://doi.org/10.1115/AJK2011-04019
View Paper titled, Numerical Simulation of Bubbles Contaminated With Soluble Surfactant
Open the PDF for Numerical Simulation of Bubbles Contaminated With Soluble Surfactant in another window
Topics: Bubbles, Computer simulation, Surfactants, Water, Desorption, Drag (Fluid dynamics), Ducts, Engineering simulation, Pipes, Simulation
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
Publisher: American Society of Mechanical Engineers
Paper No: ICONE18-30089
https://doi.org/10.1115/ICONE18-30089
View Paper titled, Comparison of CCFL Experiments Performed in Two Different Models of the Hot Leg of a PWR With Rectangular Cross-Section
Open the PDF for Comparison of CCFL Experiments Performed in Two Different Models of the Hot Leg of a PWR With Rectangular Cross-Section in another window
Topics: Accidents, Condensers (steam plant), Cooling, Cross section (Physics), Design, Dimensions, Electromagnetic scattering, Floods, Flow (Dynamics), Fluids
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
Publisher: American Society of Mechanical Engineers
Paper No: ICONE18-30026
https://doi.org/10.1115/ICONE18-30026
View Paper titled, Study on Countercurrent Flow in a PWR Hot Leg Under Reflux Cooling
Open the PDF for Study on Countercurrent Flow in a PWR Hot Leg Under Reflux Cooling in another window
Topics: Cooling, Flow (Dynamics), Pressurized water reactors, Air flow, Computer simulation, Fluids, Friction, Pipes, Water, Ducts
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
Publisher: American Society of Mechanical Engineers
Paper No: ICONE18-29092
https://doi.org/10.1115/ICONE18-29092
View Paper titled, Numerical Calculations for Air-Water Tests on CCFL in Different-Scale Models of a PWR Hot Leg
Open the PDF for Numerical Calculations for Air-Water Tests on CCFL in Different-Scale Models of a PWR Hot Leg in another window
Topics: Pressurized water reactors, Water, Flow (Dynamics), Fluids, Steam
Proceedings Papers

Mass Transfer From a Bubble in a Vertical Pipe

Shogo Hosoda, Ryosuke Sakata, Kosuke Hayashi, Akio Tomiyama
Proc. ASME. AJTEC2011, ASME/JSME 2011 8th Thermal Engineering Joint Conference, T10183, March 13–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJTEC2011-44089
https://doi.org/10.1115/AJTEC2011-44089
View Paper titled, Mass Transfer From a Bubble in a Vertical Pipe
Open the PDF for Mass Transfer From a Bubble in a Vertical Pipe in another window
Topics: Bubbles, Mass transfer, Pipes, Carbon dioxide, Shapes, Equilibrium (Physics), Image processing, Nitrogen, Oxygen
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
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2011, 133(5): 052917.
https://doi.org/10.1115/1.4002884
Published Online: December 28, 2010
View Article titled, Comparison of Countercurrent Flow Limitation Experiments Performed in Two Different Models of the Hot Leg of a Pressurized Water Reactor With Rectangular Cross Section
Open the PDF for Comparison of Countercurrent Flow Limitation Experiments Performed in Two Different Models of the Hot Leg of a Pressurized Water Reactor With Rectangular Cross Section in another window
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
Publisher: American Society of Mechanical Engineers
Paper No: ICONE17-75116
https://doi.org/10.1115/ICONE17-75116
View Paper titled, Numerical Calculations on Countercurrent Air-Water Flow in Small-Scale Models of a PWR Hot Leg Using a VOF Model
Open the PDF for Numerical Calculations on Countercurrent Air-Water Flow in Small-Scale Models of a PWR Hot Leg Using a VOF Model in another window
Topics: Flow (Dynamics), Pressurized water reactors, Water, Pipes, Two-phase flow, Boilers, Cooling, Heat, Steam, Transient analysis
Proceedings Papers

Motion of Small Bubbles Near a Grid Spacer in a Two by Three Rod Bundle

Zheng Zhang, Kana Suzuki, Shigeo Hosokawa, Akio Tomiyama
Proc. ASME. ICONE16, Volume 3: Thermal Hydraulics; Instrumentation and Controls, 449-457, May 11–15, 2008
Publisher: American Society of Mechanical Engineers
Paper No: ICONE16-48468
https://doi.org/10.1115/ICONE16-48468
View Paper titled, Motion of Small Bubbles Near a Grid Spacer in a Two by Three Rod Bundle
Open the PDF for Motion of Small Bubbles Near a Grid Spacer in a Two by Three Rod Bundle in another window
Topics: Bubbles, Fuel rods, Pressurized water reactors, Rods, Atmospheric pressure, Centrifugal force, Computer simulation, Flow (Dynamics), Fuels, Manufacturing