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Proceedings Papers

Observation and Discussion of Leading Edge Vortex Shedding From Laboratory-Scaled Cross-Flow Hydrokinetic Turbines in Counter-Rotating Configurations

Minh Doan, Yuriko Kai, Takuya Kawata, Ivan Alayeto, Shinnosuke Obi
Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T05A030, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-61338
https://doi.org/10.1115/FEDSM2021-61338
View Paper titled, Observation and Discussion of Leading Edge Vortex Shedding From Laboratory-Scaled Cross-Flow Hydrokinetic Turbines in Counter-Rotating Configurations
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Topics: Cross-flow, Hydraulic turbines, Vortex shedding, Turbines, Torque, Turbine blades, Vortices, Water, Blades, Design
Proceedings Papers

Computational Fluid Dynamic Analysis of a Marine Hydrokinetic Crossflow Turbine in Low Reynolds Number Flow

Minh N. Doan, Ivan H. Alayeto, Kana Kumazawa, Shinnosuke Obi
Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A067, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4698
https://doi.org/10.1115/AJKFluids2019-4698
View Paper titled, Computational Fluid Dynamic Analysis of a Marine Hydrokinetic Crossflow Turbine in Low Reynolds Number Flow
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Topics: Computational fluid dynamics, Flow (Dynamics), Reynolds number, Turbines, Blades, Chords (Trusses), Simulation, Dimensions, Energy generation, Flumes
Proceedings Papers

Wake Characteristics Comparison Between Isolated and Pair Configurations of Marine Hydrokinetic Crossflow Turbines at Low Reynolds Numbers

Iván Hernández Alayeto, Minh Nhat Doan, Kana Kumazawa, Shinnosuke Obi
Proc. ASME. AJKFluids2019, Volume 1: Fluid Mechanics, V001T01A037, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4741
https://doi.org/10.1115/AJKFluids2019-4741
View Paper titled, Wake Characteristics Comparison Between Isolated and Pair Configurations of Marine Hydrokinetic Crossflow Turbines at Low Reynolds Numbers
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Topics: Cross-flow, Reynolds number, Turbines, Wakes
Proceedings Papers

Experimental and Computational Fluid Dynamic Analysis of Laboratory-Scaled Counter-Rotating Cross-Flow Turbines in Marine Environment

Minh N. Doan, Ivan H. Alayeto, Claudio Padricelli, Shinnosuke Obi, Yoshitaka Totsuka
Proc. ASME. FEDSM2018, Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change, V002T14A003, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2018-83030
https://doi.org/10.1115/FEDSM2018-83030
View Paper titled, Experimental and Computational Fluid Dynamic Analysis of Laboratory-Scaled Counter-Rotating Cross-Flow Turbines in Marine Environment
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Topics: Computational fluid dynamics, Cross-flow, Turbines, Rotors, Energy generation, Belts, Blades, Brakes, Control equipment, Eddies (Fluid dynamics)
Proceedings Papers

Experimental Investigation of the Complex Flow Behavior in a Hard Disk Drive Model

Katsuaki Shirai, Lars Bu¨ttner, Ju¨rgen Czarske, Nobuo Shiga, Shinnosuke Obi
Proc. ASME. IMECE2011, Volume 7: Dynamic Systems and Control; Mechatronics and Intelligent Machines, Parts A and B, 1077-1084, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-63533
https://doi.org/10.1115/IMECE2011-63533
View Paper titled, Experimental Investigation of the Complex Flow Behavior in a Hard Disk Drive Model
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Topics: Disks, Flow (Dynamics), Horizontal directional drilling, Computer simulation, Computers, Resolution (Optics), Reynolds number, Rotation, Sensors, Statistics
Journal Articles

Numerical Investigations on Leakage Performance of the Rotating Labyrinth Honeycomb Seal

Jun Li, Shengru Kong, Xin Yan, Shinnosuke Obi, Zhengping Feng
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. June 2010, 132(6): 062501.
https://doi.org/10.1115/1.4000091
Published Online: March 16, 2010
View Article titled, Numerical Investigations on Leakage Performance of the Rotating Labyrinth Honeycomb Seal
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Topics: Honeycomb structures, Leakage, Leakage flows, Clearances (Engineering), Pressure, Flow (Dynamics), Sealing (Process)
Proceedings Papers

Turbulent Structure and Relaminalization of a Rotating Turbulent Channel Flow at High Rotaton Number

Shinichiro Sato, Shinnosuke Obi
Proc. ASME. HT2007, ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 1, 211-216, July 8–12, 2007
Publisher: American Society of Mechanical Engineers
Paper No: HT2007-32593
https://doi.org/10.1115/HT2007-32593
View Paper titled, Turbulent Structure and Relaminalization of a Rotating Turbulent Channel Flow at High Rotaton Number
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Topics: Channel flow, Turbulence, Pressure, Stress, Modeling, Rotation, Computer simulation, Diffusion (Physics), Eddies (Fluid dynamics), Flow (Dynamics)
Proceedings Papers

Performance Prediction for Optical Wall Shear Stress Sensor Using Direct Numerical Simulation of Fluid Flow

Katsuaki Shirai, Keisuke Tsuru, Shinnosuke Obi
Proc. ASME. FEDSM2003, Volume 2: Symposia, Parts A, B, and C, 75-80, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45597
https://doi.org/10.1115/FEDSM2003-45597
View Paper titled, Performance Prediction for Optical Wall Shear Stress Sensor Using Direct Numerical Simulation of Fluid Flow
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Topics: Computer simulation, Fluid dynamics, Sensors, Shear stress, Yaw, Signals, Particulate matter, Accuracy and precision, Signal processing
Proceedings Papers

On the Role of Correlation Between Instantaneous Velocity and Pressure-Gradient in Large-Scale Turbulence

Shinnosuke Obi
Proc. ASME. FEDSM2003, Volume 2: Symposia, Parts A, B, and C, 2059-2064, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45355
https://doi.org/10.1115/FEDSM2003-45355
View Paper titled, On the Role of Correlation Between Instantaneous Velocity and Pressure-Gradient in Large-Scale Turbulence
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Topics: Pressure gradient, Turbulence, Modeling, Flow (Dynamics), Pressure, Stress, Cylinders, Diffusion (Physics), Equilibrium (Physics), Kinetic energy
Proceedings Papers

Asymmetry and Unsteadiness of Incipient Separation of Nominally Axisymmetric Turbulent Boundary Layer

Shigeaki Masuda, Rei Takagi, Kouhei Okada, Shinnosuke Obi
Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 1103-1109, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45587
https://doi.org/10.1115/FEDSM2003-45587
View Paper titled, Asymmetry and Unsteadiness of Incipient Separation of Nominally Axisymmetric Turbulent Boundary Layer
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Topics: Boundary layer turbulence, Separation (Technology), Flow (Dynamics), Pressure, Diffusers, Fluctuations (Physics), Probes, Reynolds number, Signals, Velocity measurement