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Proceedings Papers

Experimental Investigation of Negative Damping Effects for a TLP Type Offshore Wind Turbine

Masaaki Aoki, Sharath Srinivasamurthy, Kazuhiro Iijima, Naoyuki Hara, Tomoki Ikoma, Yasunori Nihei
Proc. ASME. OMAE2018, Volume 10: Ocean Renewable Energy, V010T09A070, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-77256
https://doi.org/10.1115/OMAE2018-77256
View Paper titled, Experimental Investigation of Negative Damping Effects for a TLP Type Offshore Wind Turbine
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Topics: Damping, Offshore wind turbines, Tension-leg platforms, Wind turbines, Blades, Chain, Climate change, Control systems, Countermeasures, Energy generation
Proceedings Papers

A Fundamental Study on Collision of a Tsunami Drifting Objects Against Structures Using MPS Method and FEM

Koichi Masuda, Tomoki Ikoma, Daichi Murata, Hiroaki Eto, Akihiro Matsuoka, Yasuhiro Aida, Masaharu Ikegami
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A027, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-77874
https://doi.org/10.1115/OMAE2018-77874
View Paper titled, A Fundamental Study on Collision of a Tsunami Drifting Objects Against Structures Using MPS Method and FEM
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Topics: Collisions (Physics), Finite element methods, Tsunamis, Deformation, Shorelines, Stress, Automobiles, Computer simulation, Damage, Design
Proceedings Papers

Basic Characteristics of the Primary Conversion of an OWC Type WEC Installed on a Wave Dissipating Double-Caisson

Tomoki Ikoma, Koichi Masuda, Hiroaki Eto, Shogo Shibuya
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A019, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-77020
https://doi.org/10.1115/OMAE2018-77020
View Paper titled, Basic Characteristics of the Primary Conversion of an OWC Type WEC Installed on a Wave Dissipating Double-Caisson
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Topics: Caissons, Waves, Pressure, Water, Wave energy, Wave energy converters
Proceedings Papers

A Towing Test of a Floating Type VAMT With Cycloidal Pitch-Controlled Blades

Tomoki Ikoma, Hiroaki Eto, Koichi Masuda, Atsuhiro Oguchi
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A022, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-77443
https://doi.org/10.1115/OMAE2018-77443
View Paper titled, A Towing Test of a Floating Type VAMT With Cycloidal Pitch-Controlled Blades
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Topics: Blades, Turbines, Seas, Tides, Floating structures, Generators, Torque, Electric power generation, Gears, Rotation
Proceedings Papers

A Fundamental Study on Motion Characteristics and Cargo Handling Efficiency of the Large-Scale Floating Coal Transshipment Station

Hiroaki Eto, Yoh Shikita, Tomoki Ikoma, Koichi Masuda, Hiroaki Kihara
Proc. ASME. OMAE2018, Volume 6: Ocean Space Utilization, V006T05A030, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-77727
https://doi.org/10.1115/OMAE2018-77727
View Paper titled, A Fundamental Study on Motion Characteristics and Cargo Handling Efficiency of the Large-Scale Floating Coal Transshipment Station
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Topics: Coal, Stress, Fluids, Wave drift forces, Waves, Wind, Floating bodies, Ocean engineering, Pacific Ocean, Seabed
Proceedings Papers

A Fundamental Research on Countermeasure of Disaster Mitigation and Impact Force to Cause Drifting Ship

Kazuki Murata, Koichi Masuda, Tomoki Ikoma, Hiroaki Eto, Yasuhiro Aida, Akihiro Matsuoka
Proc. ASME. OMAE2017, Volume 6: Ocean Space Utilization, V006T05A026, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-62178
https://doi.org/10.1115/OMAE2017-62178
View Paper titled, A Fundamental Research on Countermeasure of Disaster Mitigation and Impact Force to Cause Drifting Ship
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Topics: Countermeasures, Hazard mitigation, Ships, Damage, Shorelines, Tsunamis, Vessels, Waves, Automobiles, Collisions (Physics)
Proceedings Papers

Effect of Coal Loading Conditions on Elastic Behavior of Large-Scale Floating Transshipment Station (LFTS)

Hiroaki Eto, Chiaki Sato, Koichi Masuda, Tomoki Ikoma, Mitsuru Kubota, Tomoyuki Kishida
Proc. ASME. OMAE2017, Volume 6: Ocean Space Utilization, V006T05A030, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61897
https://doi.org/10.1115/OMAE2017-61897
View Paper titled, Effect of Coal Loading Conditions on Elastic Behavior of Large-Scale Floating Transshipment Station (LFTS)
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Topics: Coal, Elasticity, Rivers, Clearances (Engineering), Deformation, Finite element methods, Ocean engineering, Breakwaters, Deflection, Failure
Proceedings Papers

Fundamental Study on the Development of a Tsunami Hazard Map for Moored Vessels in a Port

Koichi Masuda, Tomoki Ikoma, Satoshi Hoshino
Proc. ASME. OMAE2016, Volume 6: Ocean Space Utilization; Ocean Renewable Energy, V006T05A019, June 19–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2016-55004
https://doi.org/10.1115/OMAE2016-55004
View Paper titled, Fundamental Study on the Development of a Tsunami Hazard Map for Moored Vessels in a Port
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Topics: Hazards, Mooring, Tsunamis, Vessels, Damage, Earthquakes, Flow (Dynamics), Gates (Closures), Tension
Proceedings Papers

Effects of Disturbance of Current Field on Power Characteristics of a Floating Type Pitch-Controlled VAMT in a Real Sea

Tomoki Ikoma, Koichi Masuda, Hiroaki Eto, Chang-Kyu Rheem, Osamu Enomoto
Proc. ASME. OMAE2016, Volume 6: Ocean Space Utilization; Ocean Renewable Energy, V006T05A011, June 19–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2016-54693
https://doi.org/10.1115/OMAE2016-54693
View Paper titled, Effects of Disturbance of Current Field on Power Characteristics of a Floating Type Pitch-Controlled VAMT in a Real Sea
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Topics: Seas, Turbines, Ocean waves, Fluids, Blades, Design, Floating bodies, Tides
Proceedings Papers

Feasibility Study of the Floating Medical Support System to Operate as a Dialysis Treatment Center

Hiroaki Eto, Chiaki Sato, Koichi Masuda, Tomoki Ikoma, Mayumi Nakajima
Proc. ASME. OMAE2016, Volume 6: Ocean Space Utilization; Ocean Renewable Energy, V006T05A021, June 19–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2016-54884
https://doi.org/10.1115/OMAE2016-54884
View Paper titled, Feasibility Study of the Floating Medical Support System to Operate as a Dialysis Treatment Center
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Topics: Biomedicine, Emergencies, Earthquakes, Tsunamis, Disasters, Emergency management, Regulations, Rivers, Ships, Shorelines
Proceedings Papers

Fundamental Study on Elastic Behavior of Large-Scale Floating Coal Stockyard

Hiroaki Eto, Chiaki Sato, Koichi Masuda, Tomoki Ikoma, Tomoyuki Kishida, Mitsuru Kubota
Proc. ASME. OMAE2016, Volume 6: Ocean Space Utilization; Ocean Renewable Energy, V006T05A023, June 19–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2016-54958
https://doi.org/10.1115/OMAE2016-54958
View Paper titled, Fundamental Study on Elastic Behavior of Large-Scale Floating Coal Stockyard
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Topics: Coal, Elasticity, Design, Ocean engineering, Stiffness, Waves, Displacement, Floating structures, Pacific Ocean, Rivers
Proceedings Papers

A Fundamental Research on the Effects of a Floating Berth on Reduction of Tsunami Damages in a Harbor: Reduction Effects of the Breaking of Mooring Lines and Running on a Quay

Kazuki Murata, Masato Ohno, Tomoki Ikoma, Mitsuhiro Masuda
Proc. ASME. OMAE2015, Volume 6: Ocean Space Utilization, V006T05A015, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41709
https://doi.org/10.1115/OMAE2015-41709
View Paper titled, A Fundamental Research on the Effects of a Floating Berth on Reduction of Tsunami Damages in a Harbor: Reduction Effects of the Breaking of Mooring Lines and Running on a Quay
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Topics: Damage, Mooring, Tsunamis, Vessels, Disasters, Waves, Chain, Collisions (Physics), Earthquakes, Tension
Proceedings Papers

Basic Plan of Medi-Float on Big Disaster Installed in the River

Hiroaki Eto, Chiaki Sato, Koichi Masuda, Tomoki Ikoma, Ken Shimizu, Akio Kuroyanagi, Junko Yamaguchi
Proc. ASME. OMAE2015, Volume 6: Ocean Space Utilization, V006T05A019, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-42009
https://doi.org/10.1115/OMAE2015-42009
View Paper titled, Basic Plan of Medi-Float on Big Disaster Installed in the River
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Topics: Disasters, Rivers, Biomedicine, Earthquakes, Tsunamis, Damage, Design, Water, Flow (Dynamics), Hardware
Proceedings Papers

Power Generation Potential of a VLFS Equipped With OWC Type WECs and Damper Effects on Elastic Motion

Tomoki Ikoma, Koichi Masuda, Yuka Watanabe, Hiroaki Eto, Chang-kyu Rheem, Takeshi Kinoshita
Proc. ASME. OMAE2015, Volume 6: Ocean Space Utilization, V006T05A018, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41960
https://doi.org/10.1115/OMAE2015-41960
View Paper titled, Power Generation Potential of a VLFS Equipped With OWC Type WECs and Damper Effects on Elastic Motion
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Topics: Dampers, Energy generation, Floating structures, Water, Boundary-value problems, Displacement, Pressure, Wave energy, Waves, Absorption
Proceedings Papers

On Optimal Method of Mooring Ship in Floating Tsunami Protection Wharf

Koichi Masuda, Mitsuhiro Masuda, Kiyokazu Minami, Tomoki Ikoma
Proc. ASME. OMAE2015, Volume 6: Ocean Space Utilization, V006T05A020, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-42164
https://doi.org/10.1115/OMAE2015-42164
View Paper titled, On Optimal Method of Mooring Ship in Floating Tsunami Protection Wharf
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Topics: Mooring, Ships, Tsunamis, Vessels, Countermeasures, Emergency management
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

Development of Tsunami Hazard Map for Supporting Evacuation Guidance in Tsunami

Koichi Masuda, Tomoki Ikoma, Yasuhiro Aida, Satoshi Hoshino, Jumpei Takayama
Proc. ASME. OMAE2015, Volume 6: Ocean Space Utilization, V006T05A022, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-42343
https://doi.org/10.1115/OMAE2015-42343
View Paper titled, Development of Tsunami Hazard Map for Supporting Evacuation Guidance in Tsunami
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Topics: Evacuations, Hazards, Tsunamis, Simulation, Governments, Simulation results
Proceedings Papers

A Comparative Study of Motion Performance of Four Different FOWT Designs in Combined Wind and Wave Loads

Yasunori Nihei, Kazuhiro Iijima, Motohiko Murai, Tomoki Ikoma
Proc. ASME. OMAE2014, Volume 7: Ocean Space Utilization; Professor Emeritus J. Randolph Paulling Honoring Symposium on Ocean Technology, V007T05A025, June 8–13, 2014
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2014-24643
https://doi.org/10.1115/OMAE2014-24643
View Paper titled, A Comparative Study of Motion Performance of Four Different FOWT Designs in Combined Wind and Wave Loads
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Topics: Stress, Waves, Wind, Mooring, Semi-submersible offshore structures, Tension-leg platforms, Maintainability, Offshore wind turbines, Wind turbines
Proceedings Papers

Study on Development of the Floating Pier for Damage Protection Control of Ship in Tsunami

Koichi Masuda, Mitsuhiro Masuda, Kiyokazu Minami, Tomoki Ikoma, Masato Ohno, Fuminori Nakamura
Proc. ASME. OMAE2014, Volume 7: Ocean Space Utilization; Professor Emeritus J. Randolph Paulling Honoring Symposium on Ocean Technology, V007T05A020, June 8–13, 2014
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2014-24428
https://doi.org/10.1115/OMAE2014-24428
View Paper titled, Study on Development of the Floating Pier for Damage Protection Control of Ship in Tsunami
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Topics: Damage, Ships, Tsunamis, Disasters, Mooring, Vessels, Biomedicine, Collisions (Physics), Simulation, Structures
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