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Journal Articles

Improvement of Performance of Wave Power Conversion Due to the Projecting Walls for Oscillating Water Column Type Wave Energy Converter

Tomoki Ikoma, Koichi Masuda, Hikaru Omori, Hiroyuki Osawa, Hisaaki Maeda
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research-Article
J. Offshore Mech. Arct. Eng. April 2016, 138(2): 021902.
Paper No: OMAE-13-1105
https://doi.org/10.1115/1.4032603
Published Online: February 24, 2016
View Article titled, Improvement of Performance of Wave Power Conversion Due to the Projecting Walls for Oscillating Water Column Type Wave Energy Converter
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Topics: Water, Wave energy, Waves, Pressure
Proceedings Papers

Utilization of Wave Dissipating Caissons as an OWC Type Wave Energy Convertor

Tomoki Ikoma, Koichi Masuda, Hiroaki Eto, Kazuyoshi Kihara, Hisaaki Maeda, Madoka Takahatake
Proc. ASME. OMAE2015, Volume 6: Ocean Space Utilization, V006T05A016, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41712
https://doi.org/10.1115/OMAE2015-41712
View Paper titled, Utilization of Wave Dissipating Caissons as an OWC Type Wave Energy Convertor
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Topics: Caissons, Wave energy, Waves, Water, Compressed air, Turbines, Assembly lines, Flow (Dynamics), Generators, Potential theory (Physics)
Proceedings Papers

Improvement of Wave Power Take-Off Performance due to the Projecting Walls for OWC Type WEC

Tomoki Ikoma, Koichi Masuda, Hikaru Omori, Hiroyuki Osawa, Hisaaki Maeda
Proc. ASME. OMAE2013, Volume 8: Ocean Renewable Energy, V008T09A022, June 9–14, 2013
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2013-10384
https://doi.org/10.1115/OMAE2013-10384
View Paper titled, Improvement of Wave Power Take-Off Performance due to the Projecting Walls for OWC Type WEC
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Topics: Wave energy, Pressure, Seas, Water, Boundary element methods, Potential theory (Physics), Waves
Proceedings Papers

Performance and Characteristics of Take-Off Power of a Vertical Axis Marine Turbine With Variable-Pitch Blades

Tomoki Ikoma, Koichi Masuda, Yasunori Nakamura, Chang-Kyu Rheem, Hisaaki Maeda
Proc. ASME. OMAE2013, Volume 8: Ocean Renewable Energy, V008T09A023, June 9–14, 2013
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2013-10392
https://doi.org/10.1115/OMAE2013-10392
View Paper titled, Performance and Characteristics of Take-Off Power of a Vertical Axis Marine Turbine With Variable-Pitch Blades
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Topics: Blades, Turbines, Computational fluid dynamics, Rotation, Currents, Testing, Braking, Computation, Thrust, Torque
Proceedings Papers

Primary Conversion Efficiency of OWC Type WECs Installed on a Large Floating Structure

Tomoki Ikoma, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda, Yuka Watanabe
Proc. ASME. OMAE2012, Volume 7: Ocean Space Utilization; Ocean Renewable Energy, 31-39, July 1–6, 2012
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2012-83337
https://doi.org/10.1115/OMAE2012-83337
View Paper titled, Primary Conversion Efficiency of OWC Type WECs Installed on a Large Floating Structure
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Topics: Floating structures, Wave energy, Water, Boundary-value problems, Absorption, Dampers, Displacement, Equations of state, Fluid-dynamic forces, Modeling
Proceedings Papers

Development of a Vertical Axis Type Marine Turbine Model With Variable-Pitch Blades and Its Basic Performance

Tomoki Ikoma, Koichi Masuda, Chang-Kyu Rheem, Yusuke Yoshimura, Hisaaki Maeda
Proc. ASME. OMAE2011, Volume 5: Ocean Space Utilization; Ocean Renewable Energy, 553-561, June 19–24, 2011
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2011-49681
https://doi.org/10.1115/OMAE2011-49681
View Paper titled, Development of a Vertical Axis Type Marine Turbine Model With Variable-Pitch Blades and Its Basic Performance
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Topics: Blades, Turbines, Computational fluid dynamics, Currents, Hydraulic turbines, Inertia (Mechanics), Turbine blades
Journal Articles

Hydroelastic Behaviors of VLFS Supported by Many Aircushions With the Three-Dimensional Linear Theory

Tomoki Ikoma, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Ocean Engineering
J. Offshore Mech. Arct. Eng. February 2012, 134(1): 011104.
https://doi.org/10.1115/1.4003697
Published Online: October 17, 2011
View Article titled, Hydroelastic Behaviors of VLFS Supported by Many Aircushions With the Three-Dimensional Linear Theory
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Topics: Boundary-value problems, Deformation, Displacement, Floating structures, Fluid-dynamic forces, Integral equations, Potential theory (Physics), Radiation (Physics), Water, Wavelength
Proceedings Papers

Improvement of Torque Performance of a Vertical Axis Type Marine Turbine for a Water Current Generation System

Tomoki Ikoma, Shintaro Fujio, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda
Proc. ASME. OMAE2010, 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 3, 455-463, June 6–11, 2010
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2010-20474
https://doi.org/10.1115/OMAE2010-20474
View Paper titled, Improvement of Torque Performance of a Vertical Axis Type Marine Turbine for a Water Current Generation System
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Topics: Torque, Turbines, Water currents, Blades, Fluid-dynamic forces, Hydraulic turbines, Computational fluid dynamics, Cross-flow, Energy dissipation, Momentum
Proceedings Papers

Wavelet Analysis of VIV Characteristics of Circular Cylinders Under Forced Oscillation

Tomoki Ikoma, Koichi Masuda, Hisaaki Maeda, Sayaka Hanazawa, Yuki Tsumagari
Proc. ASME. OMAE2009, Volume 5: Polar and Arctic Sciences and Technology; CFD and VIV, 351-357, May 31–June 5, 2009
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2009-79290
https://doi.org/10.1115/OMAE2009-79290
View Paper titled, Wavelet Analysis of VIV Characteristics of Circular Cylinders Under Forced Oscillation
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Topics: Circular cylinders, Oscillations, Vortex-induced vibration, Wavelets, Cylinders, Cantilevers, Cross-flow, Marine drilling risers, Tubing, Vibration
Proceedings Papers

Hydroelastic Motion of Aircushion Type Large Floating Structures With Several Aircushions Using a Three-Dimensional Theory

Tomoki Ikoma, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda, Mayumi Togane
Proc. ASME. OMAE2009, Volume 4: Ocean Engineering; Ocean Renewable Energy; Ocean Space Utilization, Parts A and B, 1331-1338, May 31–June 5, 2009
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2009-79292
https://doi.org/10.1115/OMAE2009-79292
View Paper titled, Hydroelastic Motion of Aircushion Type Large Floating Structures With Several Aircushions Using a Three-Dimensional Theory
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Topics: Floating structures, Wavelength, Green's function methods, Potential theory (Physics), Water
Proceedings Papers

A Prediction Method of Hydroelastic Motion of Aircushion Type Floating Structures Considering With Draft Effect Into Hydrodynamic Forces

Tomoki Ikoma, Masato Kobayashi, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda
Proc. ASME. OMAE2008, Volume 6: Nick Newman Symposium on Marine Hydrodynamics; Yoshida and Maeda Special Symposium on Ocean Space Utilization; Special Symposium on Offshore Renewable Energy, 421-429, June 15–20, 2008
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2008-57189
https://doi.org/10.1115/OMAE2008-57189
View Paper titled, A Prediction Method of Hydroelastic Motion of Aircushion Type Floating Structures Considering With Draft Effect Into Hydrodynamic Forces
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Topics: Floating structures, Fluid-dynamic forces, Potential theory (Physics), Waves, Pressure, Stress, Water, Water waves, Wave drift forces, Wave forces
Proceedings Papers

A Study on Predictions of Fully Nonlinear Motion Aircushion Type Floating Structures Using 2D MPS Method

Mitsuhiro Masuda, Tomoki Ikoma, Koichi Masuda, Hisaaki Maeda
Proc. ASME. OMAE2008, Volume 6: Nick Newman Symposium on Marine Hydrodynamics; Yoshida and Maeda Special Symposium on Ocean Space Utilization; Special Symposium on Offshore Renewable Energy, 477-482, June 15–20, 2008
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2008-57387
https://doi.org/10.1115/OMAE2008-57387
View Paper titled, A Study on Predictions of Fully Nonlinear Motion Aircushion Type Floating Structures Using 2D MPS Method
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Topics: Floating structures, Particulate matter, Computational methods, Computer software, Equations of motion, Leakage, Mooring, Ocean space utilization, Ocean waves, Potential theory (Physics)
Proceedings Papers

Response Reduction of Motion and Steady Wave Drifting Forces of Floating Bodies Supported by Aircushions in Regular Waves: The 2nd Report—Response Characteristics in Oblique Waves

Tomoki Ikoma, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda
Proc. ASME. OMAE2007, Volume 5: Ocean Space Utilization; Polar and Arctic Sciences and Technology; The Robert Dean Symposium on Coastal and Ocean Engineering; Special Symposium on Offshore Renewable Energy, 3-9, June 10–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2007-29472
https://doi.org/10.1115/OMAE2007-29472
View Paper titled, Response Reduction of Motion and Steady Wave Drifting Forces of Floating Bodies Supported by Aircushions in Regular Waves: The 2nd Report—Response Characteristics in Oblique Waves
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Topics: Floating bodies, Wave drift forces, Waves, Ocean waves, Seas, Tension
Proceedings Papers

Behaviors of Drag and Inertia Coefficients of Circular Cylinders Under Vortex-Induced Vibrations With Forced Oscillation Tests in Still Water

Tomoki Ikoma, Koichi Masuda, Hisaaki Maeda, Sayaka Hanazawa
Proc. ASME. OMAE2007, Volume 3: Pipeline and Riser Technology; CFD and VIV, 931-940, June 10–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2007-29473
https://doi.org/10.1115/OMAE2007-29473
View Paper titled, Behaviors of Drag and Inertia Coefficients of Circular Cylinders Under Vortex-Induced Vibrations With Forced Oscillation Tests in Still Water
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Topics: Circular cylinders, Drag (Fluid dynamics), Inertia (Mechanics), Oscillations, Vortex-induced vibration, Water, Flow (Dynamics), Springs, Tubing
Proceedings Papers

Hydroelastic Behavior of Air-Supported Flexible Floating Structures

Tomoki Ikoma, Koichi Masuda, Hisaaki Maeda, Chang-Kyu Rheem
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 2, 745-752, June 23–28, 2002
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2002-28090
https://doi.org/10.1115/OMAE2002-28090
View Paper titled, Hydroelastic Behavior of Air-Supported Flexible Floating Structures
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Topics: Floating structures, Deformation, Pressure, Water, Wave drift forces, Waves, Absorption, Ocean engineering, Wave energy, Air-supported structures
Proceedings Papers

A Prediction Method for Horizontal Plane Behavior of FPSO Under the Single Point Mooring

Koichi Masuda, Takayuki Asanuma, Hisaaki Maeda, Tomoki Ikoma, Chang-Kyu Rheem
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, 163-168, June 23–28, 2002
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2002-28096
https://doi.org/10.1115/OMAE2002-28096
View Paper titled, A Prediction Method for Horizontal Plane Behavior of FPSO Under the Single Point Mooring
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Topics: FPSO, Mooring, Oscillations, Computer simulation, Hull, Wind, Scanning probe microscopy, Ships, Waves, Cycles
Proceedings Papers

Effects of Aircushion Division to Hydroelastic Responses of an Aircushion Type Very Large Floating Structure

Tomoki Ikoma, Koichi Masuda, Hisaaki Maeda, Chang-Kyu Rheem
Proc. ASME. OMAE2003, Volume 1: Offshore Technology; Ocean Space Utilization, 755-763, June 8–13, 2003
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2003-37264
https://doi.org/10.1115/OMAE2003-37264
View Paper titled, Effects of Aircushion Division to Hydroelastic Responses of an Aircushion Type Very Large Floating Structure
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Topics: Floating structures, Deflection, Wave drift forces, Fluid-dynamic forces, Momentum, Offshore structures, Pressure, Water waves, Wavelength
Proceedings Papers

Numerical Analysis for Hydrodynamic Motions of Floating Structure Using MPS Method

Hisaaki Maeda, Kazuo Nishimoto, Koich Masuda, Takayuki Asanuma, Marcio Michiharu Tsukamoto, Tomoki Ikoma
Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B, 777-782, June 20–25, 2004
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2004-51435
https://doi.org/10.1115/OMAE2004-51435
View Paper titled, Numerical Analysis for Hydrodynamic Motions of Floating Structure Using MPS Method
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Topics: Floating structures, Numerical analysis, Particulate matter, Waves, Computational fluid dynamics, Algorithms, Collapse, Density, Floating bodies, Flow (Dynamics)
Proceedings Papers

Air-Pressure Characteristics of Aircushion Supported Large Floating Structures

Tomoki Ikoma, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda, Ryo Iwasa
Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 343-348, June 20–25, 2004
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2004-51416
https://doi.org/10.1115/OMAE2004-51416
View Paper titled, Air-Pressure Characteristics of Aircushion Supported Large Floating Structures
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Topics: Floating structures, Pressure, Waves, Compression, Water
Proceedings Papers

Three-Dimensional Analysis of Hydroelastic Behaviors of an Aircushion Type Large Floating Structure

Tomoki Ikoma, Koichi Masuda, Chang-Kyu Rheem, Hisaaki Maeda
Proc. ASME. OMAE2005, 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 2, 349-355, June 12–17, 2005
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2005-67057
https://doi.org/10.1115/OMAE2005-67057
View Paper titled, Three-Dimensional Analysis of Hydroelastic Behaviors of an Aircushion Type Large Floating Structure
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Topics: Floating structures, Fluid-dynamic forces, Pressure