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Koichi Masuda
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Proceedings Papers

A Basic Investigation of Resonance Characteristics of Water Regions of PW-OWC WECs

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Tomoki Ikoma, Airi Kuwata, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2023, Volume 4: Ocean Space Utilization, V004T05A017, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104669
https://doi.org/10.1115/OMAE2023-104669
View Paper titled, A Basic Investigation of Resonance Characteristics of Water Regions of PW-OWC WECs
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Topics: Resonance, Water
Proceedings Papers

Numerical Study on the Deceleration Effect of Impact Velocity of Tsunami Drifting Objects in Front of Structures

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Mebae Takekawa, Yasuhiro Aida, Hibiki Nakazawa, Ami Sasaki, Tomoki Ikoma, Koichi Masuda
Proc. ASME. OMAE2023, Volume 4: Ocean Space Utilization, V004T05A023, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-104612
https://doi.org/10.1115/OMAE2023-104612
View Paper titled, Numerical Study on the Deceleration Effect of Impact Velocity of Tsunami Drifting Objects in Front of Structures
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Topics: Tsunamis
Proceedings Papers

Motion Characteristics of a Floating Model With Moonpools for VAWTs

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Tomoki Ikoma, Katsuhide Fujishima, Yasuhiro Aida, Tan Lei, Koichi Masuda
Proc. ASME. OMAE2022, Volume 4: Ocean Space Utilization, V004T05A017, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-79153
https://doi.org/10.1115/OMAE2022-79153
View Paper titled, Motion Characteristics of a Floating Model With Moonpools for VAWTs
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Topics: Vertical axis wind turbines, Waves
Proceedings Papers

Development of a Simulation System for Estimating the Impact Force of Tsunami Drift Using the Explicit MPS Method

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Yasuhiro Aida, Tomoki Ikoma, Koichi Masuda
Proc. ASME. OMAE2021, Volume 5: Ocean Space Utilization, V005T05A018, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62244
https://doi.org/10.1115/OMAE2021-62244
View Paper titled, Development of a Simulation System for Estimating the Impact Force of Tsunami Drift Using the Explicit MPS Method
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Topics: Simulation, Tsunamis
Proceedings Papers

Mean Wave Drift Force on a Barge-Type Floating Wind Turbine With Moonpools

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Lei Tan, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2021, Volume 6: Ocean Engineering, V006T06A007, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62241
https://doi.org/10.1115/OMAE2021-62241
View Paper titled, Mean Wave Drift Force on a Barge-Type Floating Wind Turbine With Moonpools
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Topics: Floating wind turbines, Wave drift forces, Turbines, Vertical axis wind turbines, Waves, Yaw, Blades, Construction, Diffraction, Numerical analysis
Proceedings Papers

Scale and Configuration Effects of an Airchamber on PTO of Oscillating Water Column Type Wave Energy Converters

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Tomoki Ikoma, Shota Hirai, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2021, Volume 5: Ocean Space Utilization, V005T05A012, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62173
https://doi.org/10.1115/OMAE2021-62173
View Paper titled, Scale and Configuration Effects of an Airchamber on PTO of Oscillating Water Column Type Wave Energy Converters
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Topics: Oscillations, Water, Wave energy converters
Proceedings Papers

A Study on Performance Evaluation of Non-Reflective Boundary for Progressive Waves Reproduction Introduced in Numerical Wave Tank With MPS Method

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Yasuhiro Aida, Tomotaka Takeo, Tomoki Ikoma, Koichi Masuda
Proc. ASME. OMAE2021, Volume 5: Ocean Space Utilization, V005T05A014, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62364
https://doi.org/10.1115/OMAE2021-62364
View Paper titled, A Study on Performance Evaluation of Non-Reflective Boundary for Progressive Waves Reproduction Introduced in Numerical Wave Tank With MPS Method
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Topics: Particulate matter, Performance evaluation, Waves, Ocean engineering, Water, Absorption, Computer simulation, Energy dissipation, Position control, Reflection
Proceedings Papers

Study of Motion Performance of a Floating System With Four Moonpools and a VAWT

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Lei Tan, Satsuya Moritsu, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. IOWTC2021, ASME 2021 3rd International Offshore Wind Technical Conference, V001T01A001, February 16–17, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IOWTC2021-3511
https://doi.org/10.1115/IOWTC2021-3511
View Paper titled, Study of Motion Performance of a Floating System With Four Moonpools and a VAWT
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Topics: Vertical axis wind turbines
Proceedings Papers

Study on Applicability of FEMA Formula in Prediction of Impact Load by Tsunami Drifting Vessels on Coastal Zone Structures

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Koichi Masuda, Tomoki Ikoma, Hiroaki Eto, Yasuhiro Aida, Kazuki Murata
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A015, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-19088
https://doi.org/10.1115/OMAE2020-19088
View Paper titled, Study on Applicability of FEMA Formula in Prediction of Impact Load by Tsunami Drifting Vessels on Coastal Zone Structures
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Topics: Collisions (Physics), FEMA, Shorelines, Stress, Tsunamis, Vessels
Proceedings Papers

Effects of Scale and Configuration of Air Chamber of OWC Type WECs on Air Chamber Characteristics

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Tomoki Ikoma, Shota Hirai, Yasuhiro Aida, Koichi Masuda, Hiroaki Eto
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A014, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18762
https://doi.org/10.1115/OMAE2020-18762
View Paper titled, Effects of Scale and Configuration of Air Chamber of OWC Type WECs on Air Chamber Characteristics
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Topics: Design, Ducts, Manifolds, Oscillations, Potential theory (Physics), Pressure, Probes, Shapes, Turbines, Water
Proceedings Papers

Characteristics of OWC Type WEC Dampers Installed on a Very Large Floating Structure

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Tomoki Ikoma, Shoichiro Furuya, Yasuhiro Aida, Koichi Masuda, Hiroaki Eto
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A027, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-19002
https://doi.org/10.1115/OMAE2020-19002
View Paper titled, Characteristics of OWC Type WEC Dampers Installed on a Very Large Floating Structure
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Topics: Dampers, Floating structures, Computational methods, Floating bodies, Oceans, Oscillations, Potential theory (Physics), Seawater, Water, Wave energy
Proceedings Papers

A Fundamental Study on Motion Characteristics of the Large-Scale Floating Coal Transshipment Station by Elastic Mooring Lines

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Hiroaki Eto, Ryo Sekiguchi, Hitomi Kashima, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A025, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18958
https://doi.org/10.1115/OMAE2020-18958
View Paper titled, A Fundamental Study on Motion Characteristics of the Large-Scale Floating Coal Transshipment Station by Elastic Mooring Lines
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Topics: Coal, Mooring, Tension, Floating bodies, Tides, Chain, Ocean engineering, Oscillations, Pacific Ocean, Piers (Structural)
Proceedings Papers

On GIS Based Selection of Suitable Site Including Cooperation With Surrounding Medical Facilities by Mesh Analysis of Floating Medical Support System on Big Disaster

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Hiroaki Eto, Sena Shimomoto, Sachio Togawa, Morikazu Yamamoto, Shintaro Miyasawa, Junko Yamaguchi, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda, Hiroki Udagawa
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A021, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-19026
https://doi.org/10.1115/OMAE2020-19026
View Paper titled, On GIS Based Selection of Suitable Site Including Cooperation With Surrounding Medical Facilities by Mesh Analysis of Floating Medical Support System on Big Disaster
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Topics: Biomedicine, Disasters, Earthquakes, Structures, Water, Damage, Rivers, Shorelines, Transportation systems, Cities
Proceedings Papers

A Fundamental Study on Plastic Strain Accompanying Deformation in Large-Scale Floating Coal Transshipment Station

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Ryo Nishigochi, Hiroaki Eto, Koji Iizuka, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2020, Volume 5: Ocean Space Utilization, V005T05A026, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18962
https://doi.org/10.1115/OMAE2020-18962
View Paper titled, A Fundamental Study on Plastic Strain Accompanying Deformation in Large-Scale Floating Coal Transshipment Station
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Topics: Coal, Deformation, Breakwaters, Modeling, Stress, Stress concentration, Boundary-value problems, Floating bodies, Floating structures, Ocean engineering
Proceedings Papers

Effects of Four Moon Pools on a Floating System Installed With Twin-VAWTs

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Tomoki Ikoma, Mitsuru Nakamura, Satsuya Moritsu, Yasuhiro Aida, Koichi Masuda, Hiroaki Eto
Proc. ASME. IOWTC2019, ASME 2019 2nd International Offshore Wind Technical Conference, V001T01A016, November 3–6, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IOWTC2019-7598
https://doi.org/10.1115/IOWTC2019-7598
View Paper titled, Effects of Four Moon Pools on a Floating System Installed With Twin-VAWTs
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Topics: Vertical axis wind turbines
Proceedings Papers

Effect of Coal Loading Conditions on Structural Characteristics of LFTS

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Hiroaki Eto, Koji Iizuka, Ryo Nishigochi, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda
Proc. ASME. OMAE2019, Volume 9: Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology, V009T13A047, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96482
https://doi.org/10.1115/OMAE2019-96482
View Paper titled, Effect of Coal Loading Conditions on Structural Characteristics of LFTS
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Topics: Coal, Waves, Finite element methods, Ocean engineering, Stress concentration, Deformation, Design methodology, Displacement, Elasticity, Fracture toughness
Proceedings Papers

On GIS Based Facility Scale and Selection of Suitable Site of Floating Medical Support System on Big Disaster

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Hiroaki Eto, Sachio Togawa, Morikazu Yamamoto, Shintaro Miyasawa, Junko Yamaguchi, Tomoki Ikoma, Yasuhiro Aida, Koichi Masuda, Sena Shimomoto, Yuichi Kitabatake
Proc. ASME. OMAE2019, Volume 9: Rodney Eatock Taylor Honoring Symposium on Marine and Offshore Hydrodynamics; Takeshi Kinoshita Honoring Symposium on Offshore Technology, V009T13A048, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96493
https://doi.org/10.1115/OMAE2019-96493
View Paper titled, On GIS Based Facility Scale and Selection of Suitable Site of Floating Medical Support System on Big Disaster
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Topics: Biomedicine, Disasters, Earthquakes, Emergencies, Tsunamis, Collapse, Damage, Emergency management, Risk, Rivers
Proceedings Papers

A Research on Predicting Method of the Damage by Tsunami Drifting Objects in Urban Port

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Koichi Masuda, Tomoki Ikoma, Yasuhiro Aida, Masayuki Takada, Yuta Fukunaga
Proc. ASME. OMAE2019, Volume 6: Ocean Space Utilization, V006T05A019, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-95927
https://doi.org/10.1115/OMAE2019-95927
View Paper titled, A Research on Predicting Method of the Damage by Tsunami Drifting Objects in Urban Port
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Topics: Cities, Damage, Tsunamis, Containers, Automobiles, Collisions (Physics), Disasters, Gates (Closures), Timber
Proceedings Papers

A Fundamental Study on Tsunami Protection Measures for a Vessel Moored at a Wharf Considering the Backwash Influence

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Mitsuhiro Masuda, Kiyokazu Minami, Koichi Masuda
Proc. ASME. OMAE2019, Volume 6: Ocean Space Utilization, V006T05A020, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96159
https://doi.org/10.1115/OMAE2019-96159
View Paper titled, A Fundamental Study on Tsunami Protection Measures for a Vessel Moored at a Wharf Considering the Backwash Influence
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Topics: Mooring, Tsunamis, Vessels, Damage, Waves, Dams, Flow (Dynamics), Outflow, Particulate matter
Proceedings Papers

Introduction of Virtual Structural Boundary for Collision Force Analysis of Tsunami Drifting Objects in Particle Method

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Yasuhiro Aida, Koichi Masuda, Tomoki Ikoma, Hiroaki Eto
Proc. ASME. OMAE2019, Volume 6: Ocean Space Utilization, V006T05A018, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-95408
https://doi.org/10.1115/OMAE2019-95408
View Paper titled, Introduction of Virtual Structural Boundary for Collision Force Analysis of Tsunami Drifting Objects in Particle Method
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Topics: Boundary-value problems, Collisions (Physics), Mirrors, Particulate matter, Tsunamis