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Hiroyoshi Watanabe
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Proceedings Papers

Adjoint-Based Topology Optimization for Hydraulic Performance Improvement in Double-Suction Volute Pump

Szu Yung Chen, Shunsuke Shimizu, Hiroyoshi Watanabe
Proc. ASME. FEDSM2024, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC); Multiphase Flow (MFTC), V001T01A013, July 15–17, 2024
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2024-130597
https://doi.org/10.1115/FEDSM2024-130597
View Paper titled, Adjoint-Based Topology Optimization for Hydraulic Performance Improvement in Double-Suction Volute Pump
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Topics: Computer simulation, Pumps, Suction, Suction pumps, Topology optimization
Journal Articles

Comparison of Transport Equation-Based Cavitation Models and Application To Industrial Pumps With Inducers

Enver S. Karakas, Nehir Tokgöz, Hiroyoshi Watanabe, Matteo Aureli, Cahit A. Evrensel
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2022, 144(1): 011201.
Paper No: FE-20-1523
https://doi.org/10.1115/1.4051471
Published Online: July 21, 2021
View Article titled, Comparison of Transport Equation-Based Cavitation Models and Application To Industrial Pumps With Inducers
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Topics: Cavitation, Pumps, Vapors
Proceedings Papers

Effects of Volute Cross-Sectional Area Distribution on Performance of Double-Suction Volute Pump

Szu Yung Chen, Lu Zhang, Yumiko Sekino, Hiroyoshi Watanabe
Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A031, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5251
https://doi.org/10.1115/AJKFluids2019-5251
View Paper titled, Effects of Volute Cross-Sectional Area Distribution on Performance of Double-Suction Volute Pump
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Topics: Flow (Dynamics), Optimization, Pumps, Suction, Design, Computational fluid dynamics, Cross section (Physics), Genetic algorithms, Impellers, Shapes
Proceedings Papers

Numerical Investigation on the Effect of Blade Loading on Unsteady Sheet Cavitation Patterns

Jeremy Nahon, Mehrdad Zangeneh, Motohiko Nohmi, Hiroyoshi Watanabe
Proc. ASME. AJKFluids2019, Volume 5: Multiphase Flow, V005T05A016, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5399
https://doi.org/10.1115/AJKFluids2019-5399
View Paper titled, Numerical Investigation on the Effect of Blade Loading on Unsteady Sheet Cavitation Patterns
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Topics: Blades, Cascades (Fluid dynamics), Cavitation, Simulation
Journal Articles

Cavitation Performance of Constant and Variable Pitch Helical Inducers for Centrifugal Pumps: Effect of Inducer Tip Clearance

Enver S. Karakas, Hiroyoshi Watanabe, Matteo Aureli, Cahit A. Evrensel
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2020, 142(2): 021211.
Paper No: FE-19-1288
https://doi.org/10.1115/1.4044629
Published Online: October 10, 2019
View Article titled, Cavitation Performance of Constant and Variable Pitch Helical Inducers for Centrifugal Pumps: Effect of Inducer Tip Clearance
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Topics: Cavitation, Clearances (Engineering), Pressure, Pumps, Computational fluid dynamics, Suction, Simulation, Flow (Dynamics), Vapors, Centrifugal pumps
eBook Chapter

Comparative Assessment of a Barotropic Model and a Void Fraction Transport Model for Numerically Predicting Steady Sheet Cavitation

Series: ASME Press Select Proceedings
Publisher: ASME Press
Published: 2018
ISBN: 9780791861851
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Topics: Cavitation, Porosity
Proceedings Papers

Experimental Investigation on Diffuser Rotating Stall in a Three-Stage Centrifugal Pump

Taiki Takamine, Satoshi Watanabe, Daichi Furukawa, Hiroyoshi Watanabe, Kazuyoshi Miyagawa
Proc. ASME. FEDSM2017, Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery, V01AT05A021, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69386
https://doi.org/10.1115/FEDSM2017-69386
View Paper titled, Experimental Investigation on Diffuser Rotating Stall in a Three-Stage Centrifugal Pump
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Topics: Centrifugal pumps, Diffusers, Flow (Dynamics), Leakage, Rotors, Errors, Impellers, Leakage flows, Reliability, Suction
Proceedings Papers

Optimization of High Pressure Pump Flow Passages Based on Adjoint and CFD

Yumiko Sekino, Hiroyoshi Watanabe, Faidon Christakopoulos, Mehrdad Zangeneh
Proc. ASME. FEDSM2016, Volume 1A, Symposia: Turbomachinery Flow Simulation and Optimization; Applications in CFD; Bio-Inspired and Bio-Medical Fluid Mechanics; CFD Verification and Validation; Development and Applications of Immersed Boundary Methods; DNS, LES and Hybrid RANS/LES Methods; Fluid Machinery; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Active Fluid Dynamics and Flow Control — Theory, Experiments and Implementation, V01AT02A008, July 10–14, 2016
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2016-7831
https://doi.org/10.1115/FEDSM2016-7831
View Paper titled, Optimization of High Pressure Pump Flow Passages Based on Adjoint and CFD
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Topics: Computational fluid dynamics, Flow (Dynamics), High pressure (Physics), Optimization, Pumps, Diffusers, Impellers, Design, Geometry, Deformation
Proceedings Papers

CFD Analysis of Axial Thrust in Three Stages Centrifugal Pump at Design and Partload Conditions

Hiroyoshi Watanabe, Tetsuya Yamashita, Satoshi Watanabe, Yoshinori Hara
Proc. ASME. AJKFluids2015, Volume 1A: Symposia, Part 2, V01AT02A005, July 26–31, 2015
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2015-02272
https://doi.org/10.1115/AJKFluids2015-02272
View Paper titled, CFD Analysis of Axial Thrust in Three Stages Centrifugal Pump at Design and Partload Conditions
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Topics: Centrifugal pumps, Computational fluid dynamics, Design, Thrust, Flow (Dynamics), Impellers, Diffusers, Rotors, Fluids, Internal flow
Proceedings Papers

Measurements of Axial and Radial Thrust Forces Working on a Three-Stages Centrifugal Pump Rotor

Tetsuya Yamashita, Satoshi Watanabe, Yoshinori Hara, Hiroyoshi Watanabe, Kazuyoshi Miyagawa
Proc. ASME. AJKFluids2015, Volume 1A: Symposia, Part 2, V01AT33A013, July 26–31, 2015
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2015-33515
https://doi.org/10.1115/AJKFluids2015-33515
View Paper titled, Measurements of Axial and Radial Thrust Forces Working on a Three-Stages Centrifugal Pump Rotor
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Topics: Centrifugal pumps, Rotors, Thrust, Flow (Dynamics), Ball bearings, Journal bearings, Stress
Proceedings Papers

Design Optimization of Cryogenic Pump Inducer Considering Suction Performance and Cavitation Instability

Hiroyoshi Watanabe, Hiroshi Tsukamoto
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 1763-1772, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-05010
https://doi.org/10.1115/AJK2011-05010
View Paper titled, Design Optimization of Cryogenic Pump Inducer Considering Suction Performance and Cavitation Instability
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Topics: Cavitation, Design, Optimization, Pumps, Suction, Blades, Computational fluid dynamics, Experimental design, Pressure, Vortices
Proceedings Papers

Multi-Objective Design Optimization of a Mixed-Flow Pump

Yumiko Takayama, Hiroyoshi Watanabe
Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 371-379, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78348
https://doi.org/10.1115/FEDSM2009-78348
View Paper titled, Multi-Objective Design Optimization of a Mixed-Flow Pump
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Topics: Computational fluid dynamics, Design, Diffusers, Flow (Dynamics), Optimization, Pareto optimization, Pumps
Proceedings Papers

Development of Electric Power Generation Unit Driven by Waste Heat: Study on Working Fluids and Expansion Turbines

Naoyuki Inoue, Atsushi Kaneko, Hiroyoshi Watanabe, Tomoyuki Uchimura, Kiichi Irie
Proc. ASME. GT2007, Volume 3: Turbo Expo 2007, 927-938, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27749
https://doi.org/10.1115/GT2007-27749
View Paper titled, Development of Electric Power Generation Unit Driven by Waste Heat: Study on Working Fluids and Expansion Turbines
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Topics: Electric power generation, Fluids, Turbines, Waste heat, Computational fluid dynamics, Cycles, Blades, Cooling, Generators, Heat
Proceedings Papers

Optimization of Microturbine Aerodynamics Using CFD, Inverse Design and FEM Structural Analysis: 2nd Report — Turbine Design

Hiroyoshi Watanabe, Hidenobu Okamoto, Shijie Guo, Akira Goto, Mehrdad Zangeneh
Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 1545-1552, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53583
https://doi.org/10.1115/GT2004-53583
View Paper titled, Optimization of Microturbine Aerodynamics Using CFD, Inverse Design and FEM Structural Analysis: 2nd Report — Turbine Design
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Topics: Aerodynamics, Computational fluid dynamics, Design, Finite element methods, Microturbines, Optimization, Structural analysis, Turbines, Blades, Design methodology