Hidetsugu Iwashita

Last Updated :2024/12/02

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
E-mail
iwashitanaoe.hiroshima-u.ac.jp

Basic Information

Academic Degrees

  • Bachelor of Engineering, Kyushu University
  • Master of Engineering, Kyushu University
  • Doctor of Engineering, Kyushu University

Research Fields

  • Engineering;Integrated engineering;Naval and maritime engineering
  • Engineering;Integrated engineering;Aerospace engineering
  • Engineering;Mechanical engineering;Fluid engineering

Research Keywords

  • Ship seakeeping
  • Airworthiness
  • WIG
  • Wind turbine
  • Offshore floating wind turbine

Educational Activity

Course in Charge

  1. 2024, Liberal Arts Education Program1, 4Term, Science of Vehicle and Transportation
  2. 2024, Undergraduate Education, 3Term, Ship Design and Practice
  3. 2024, Undergraduate Education, 2Term, Aircraft Design and Practice
  4. 2024, Undergraduate Education, 2Term, Transportation Vessels and Vehicles II
  5. 2024, Undergraduate Education, 3Term, Summary of Applied Analysis
  6. 2024, Undergraduate Education, Intensive, Internship
  7. 2024, Undergraduate Education, 4Term, Natural-Energy Utilization Engineering
  8. 2024, Undergraduate Education, Year, Graduation Thesis
  9. 2024, Graduate Education (Master's Program) , 1Term, Special Exercises on Transportation and Environmental Systems A
  10. 2024, Graduate Education (Master's Program) , 2Term, Special Exercises on Transportation and Environmental Systems A
  11. 2024, Graduate Education (Master's Program) , 3Term, Special Exercises on Transportation and Environmental Systems B
  12. 2024, Graduate Education (Master's Program) , 4Term, Special Exercises on Transportation and Environmental Systems B
  13. 2024, Graduate Education (Master's Program) , Academic Year, Special Study on Transportation and Environmental Systems
  14. 2024, Graduate Education (Master's Program) , 2Term, Seakeeping and Airworthiness for Ships and Aircrafts
  15. 2024, Graduate Education (Master's Program) , Year, Transportation and Environmental Systems Internship
  16. 2024, Graduate Education (Doctoral Program) , Academic Year, Special Study on Transportation and Environmental Systems
  17. 2024, Graduate Education (Doctoral Program) , Academic Year, Special Study on Transportation and Environmental Systems

Research Activities

Academic Papers

  1. Evaluation of the Green Function for Ship Motions of Forward Speed and Application to Radiation and Diffraction Problems, Proceedings of the Fourth International Workshop on Water Waves and Floating Bodies, 19890401
  2. Hydrodynamic Forces on a Ship Moving at Forward Speed in Waves, Naval Architecture and Ocean Engineering, 28, 19920401
  3. Combined Boundary-Integral Equation Method for Ship Motions in Waves, The West-Japan Society of Naval Architects, 37-55, 19930401
  4. Wave Forces Acting on a Blunt Ship Advancing Obligue Shout Waves, Proceeding of 9th International Workshop on Water Waves and Flooting Bodies, 89-93, 19940401
  5. An Improved Computation Method of the Seakeeping Green Function, Institut F(]E88DB[)r Schiffbau Der Universit(]J1103[)t Hamburg, 577, 19970401
  6. Diffraction Waves of a Blunt Ship at Forward Speed in Ballast-Load Condition, Proceeding of Numerical Towing Tank Symposium, 19980401
  7. Prediction of Diffraction Wave of a Blunt Ship with Forward Speed Taking into account of the Steady Nonlinear Wave Field, Proceeding of 2nd Numerical Towing Tank Symposium, 19990401
  8. On Unsteady Waves Generated by a Blant Ship with Forward Speed in Waves, Proceeding of 15th International Workshop on Water Waves and Floating Bodies, 87-90, 20000401
  9. A New Type VLFS Using Submerged Plates : SUB-PLATE VLFS -Part2 Motion and Mooring of Floating Breakwater-, Proc. of OMAE2001, CD-Rom, 20010601
  10. A New Type VLFS using Submerged Plates: Sub-Plate VLFS --Part-3 Structural Response and Strength --, Proceedings of 20th International Conference on Offshore Mechanics and Arctic Engineering, CD-ROM, CD-ROM, 20010501
  11. Side Wall Effects of a Towing Tank on the Measurement of Unsteady Waves of Ships Advancing in Waves, Transactions of The West-Japan Society of Naval Architects, 21-33, 20010801
  12. Side Wall Effects of a Towing Tank on Measured Unsteady Waves in Low Frequency Range, Proceeding of 15th International Workshop on Water Waves and Floating Bodies, 61-64, 20010401
  13. Influence of the Fully Nonlinear Steady Wave Field on the Unsteady Wave Field of a Blunt Ship Advancing in Waves, Transactions of The West-Japan Society of Naval Architects, 37-48, 20000301
  14. A Critical Assessment of Potential Flow Models for Ship Seakeeping, Proceedings of 4th Osaka Colloquium on Seakeeping Performance of Ships, 37-46, 20000101
  15. On Unsteady Waves Generated by a Blunt Ship with Forward Speed in Waves, Proceedings of the Fourth International Workshop on Water Waves and Floating Bodies, 87-90, 20000401
  16. Prediction of Diffraction Waves of a Blunt Ship with Forward Speed Taking Account of the Steady Nonlinear Wave Field, Proceeding of 2nd Numerical Towing Tank Symposium, 57-60, 19990801
  17. Influence of the Steady Wave Field in the Unsteady Wave Field of a Ship with Forward Speed, 37-44, 19990701
  18. Diffraction Waves of a Blunt Ship with Forward Speed Taking Account of the Steady Nonlinear Wave Field, Proceedings of the Fourth International Workshop on Water Waves and Floating Bodies, 48-51, 19990401
  19. Influence of the Steady Flow in Seakeeping of a High-Speed Vessel, International Conference for High-Performance Marine Vehicles, 101-106, 19980801
  20. ★, Seakeeping Computations of a Blunt Ship Capturing the Influence of the Steady Flow, Ship Technology Research, 45(4), 159-171, 19980101
  21. Diffraction Waves of a Blunt Ship at Forward Speed in Ballast Load Condition, Proceeding of Numerical Towing Tank Symposium, 45(4), 41-44, 19980901
  22. Evaluation of the Second Derivatives of the Seakeeping Green Function, The Jahrbuch der Schiffbautechnishen Gesellschaft, 92, 236-243, 19980901
  23. Influence of the Steady Flow in Seakeeping of a Blunt Ship through the Free Surface Condition, Proceeding of 15th International Workshop on Water Waves and Floating Bodies, 89-92, 19980401
  24. Numerical Study on the Influence of the Steady Flow Field in Seakeeping, Proceedings of the Fourth International Workshop on Water Waves and Floating Bodies, 89-92, 19970401
  25. An Improved Computation Method of Seakeeping Green Function, Memoir of Institute for Shiffbau= University of Hamburg, 1-22, 19970301
  26. 3-D Analysis of the Hydrodynamic Interaction between Steady and Unsteady Flows for a Catamaran, Proceedings of Korea and Japan Joint Workshop, 1-9, 19960701
  27. A Combined Boundary-Integral Equation Method for Determining the Unsteady Flow around a Ship in Waves, Proceeding of 15th International Workshop on Water Waves and Floating Bodies, 139-144, 19940401
  28. Wave Forces Acting on a Blunt Ship Advancing Oblique Short Waves, Proceedings of 9th International Workshop on Water Waves and Floating Bodies, 89-93, 19940401
  29. Effect of the Steady Disturbance on the Unsteady Flow of a Ship in Waves, Journal of the society of naval architects of japan, 174, 151-162, 19931201
  30. ★, Combined Boundary-Integral Equations Method for Ship Motions in Waves, Transactions of The West-Japan Society of Naval Architects, 37-55, 19930301
  31. ★, The Green Function Method for Ship Motions at Forward Speed, Ship Technology Research, 39(2), 3-21, 19920301
  32. Calculation Formulas for the Hydrodynamic Force on a Local Non-Slender Ship with Forward Speed, Bulletin of Faculty of Engineering= Hiroshima University, 11(2), 11-19, 19920201
  33. Evaluation of the Added-Wave-Resistance Green Function Distributing on a Panel, Memoirs of thje faculty of Engineering= Hiroshima University, 11(2), 21-39, 19920201
  34. Hydrodynamic Forces on a Ship Moving with Forward Speed in Waves, Selected Paper from Journal of the Society of Naval Architects of Japan, 28, 19920801
  35. Evaluation of the Green Function for Ship Motions at Forward Speed and Application to Radiation and Diffraction Problems, Proceedings of the Fourth International Workshop on Water Waves and Floating Bodies, 19890401
  36. A New Type VLFS using Submerged Plates: Sub-Plate VLFS--Part-3 Structural Response and Strength --, Proceedings of the 20th International Conference of Offshore Mechanics and Arctic Engineering, CR-ROM, OSU-5019, 20010601
  37. A New Type VLFS Using Submerged Plates: Sub-Plate VLFS - Part 3: Structural Response and Strength -, Proc. of the 20th OMAE, CD-ROM, 20010601
  38. A Study on the Aerodynamic Interaction of Wings and the Aerodynamic Properties of a Canard-Configuration WISES Flying above Still Water and Waves(Part 1), Journal of the society of naval architects of japan, 20030401
  39. A Study on the Aerodynamic Interraction of Wings and the Aerodynamic Properties of a Canard-Configuration WISES Flying ablve Still Water and Waves(Part 2), 20030401
  40. A Study on Power Generation Characteristics of an Ocean Current Power Generation Turbine, 20140110
  41. A Study on the Aerodynamic Properties of a Canard-Configuration WISES, Proceedings of 29th International Workshop on Water Waves and Floating Bodies, 89-92, 20140330
  42. A calculation method for finite depth free-surface green function, INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING, 7(2), 375-389, 201503
    Link to Paper Search Results by DOI
  43. SUPERIOR SEAWORTHINESS OF A RESONANCE-FREE FAST OCEANGOING SWATH, INTERNATIONAL JOURNAL OF MARITIME ENGINEERING, 156, A315-A332, 2014
    Link to Paper Search Results by DOI
  44. Submerged Hydraulic Turbine for Deep Marine Current as an Electric Power Generator, The 2nd Asia Wave and Tidal Energy Conference, 20140728
  45. Lift Characteristics of Controlling Fins of Resonance-Free SWATH, OMAE2014, CD-ROM, OMAE2014-23067, 20140608
  46. Unsteady Characteristics of Lift Generated by Small Underwater Controlling Fin, X HSMV (High Speed Marine Vehicle), 20141015
  47. Unsteady Characteristics of Fin-Generated Lift Acting on Resonance-Free SWATH, HSMV (High Speed Marine Vehicles), 20141015
  48. Hydrosynamic Analysis of a Semi-Submersible FOWT by Hybrid Panel-Stick Models, ISPOPE2015, 20150621
  49. On Steady and Unsteady Aerodynamics of Rectangular Wing Flying in the Ground Effect, Proceedings of Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 29-32, 20141114
  50. A Time-Domain Hybrid Method for Seakeeping Quality Analysis, Proceedings of Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 41-44, 20141114
  51. Experimental Data Acquisition for the Benchmark Test of Seakeeping Estimation Codes, Proceedings of Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 45-48, 20141114
  52. Characteristics of Motions of a Floating Body for Offshore Wind Power Generation, Proceedings of Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 59-62, 20141114
  53. A Preliminary Design and Performance Estimation of an Ocean Current Turbine, Proceedings of Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 63-66, 20141114
  54. A Preliminary Design and Performance Estimation of an Ocean Current Turbine, International Symposium on Ocean Renewable Energy Technologies, 20141219
  55. Characteristics of Motions of a Floating Body for Offshore Wind Power Generation, International Symposium on Ocean Renewable Energy Technologies, 20141219
  56. 日本船舶海洋工学会講演会論文集, 325-327, 201405
  57. ★, On Numerical Treatments of the Infinite Condition in the Frequency-Domain Rankine Panel Method, Journal of the Japan Society of Naval Architects and Ocean Engineers, 105-127, 201612
  58. ★, Calculations of Ship Seakeeping in Low-Speed/Low-Frequency Range by Frequency-Domain Rankine Panel Methods, Journal of the Japan Society of Naval Architects and Ocean Engineers, 129-146, 201612
  59. Influence of the Wake Deformation and the Free-Surface on Steady Aerodynamics of Wings in the Ground Effect, Journal of the Japan Society of Naval Architects and Ocean Engineers, 51-68, 201612
  60. Characteristics of Unsteady Aerodynamics and Pressure Fields of ings Flying with Heave Motion in the Ground Effect, Journal of the Japan Society of Naval Architects and Ocean Engineers, 69-83, 201612
  61. Pressure Distributions on Wing Surface and Aerodynamic Properties of 3-D Wings Cruising in the Ground Effect, Journal of the Japan Society of Naval Architects and Ocean Engineers, 85-103, 201612
  62. Measurement of Wave-induced Unsteady Pressure Distribution on Ship-hull Surface Using FBG Sensors, Conference Proceedings, The Japan Society of Naval Architects and Ocean Engineers, 613-616, 201705
  63. Pressure Distributions and Aerodynamic Properties of Wings in the Ground Effect, Proceedings of the Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 2016, 27-30, 20161208
  64. Measurement of Unsteady Pressure Distribution of a Ship in Waves, Proceedings of the Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 2016, 31-35, 20161208
  65. Improvement in estimation of pressure distribution on ship hull surface, Proceedings of the Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 2016, 37-40, 20161208
  66. Characteristics of Steady Aerodynamics and Aerodynamic Interactions between Wings of a Canard-Configuration WIG, Journal of The Society of Naval Architects and Ocean Engineers, 63-75, 201706

Invited Lecture, Oral Presentation, Poster Presentation

  1. Prediction of Wave Loads with Measured Unsteady Pressure Distribution on Ship-Hull Surface, Masashi Kashiwagi, Hidetsugu Iwashita, Kurniawan T. Waskito, Munehiko Hinatsu, The 35th International Workshop on Water Waves and Floating Bodies, 2020/08/24, Without Invitation, English, Seoul National University, Seoul National University, preprint
  2. Estimation of Hydrodynamic Forces with Measured Unsteady-Pressure Distribution on a Ship Advancing in Waves, T. Fukumoto, H. Iwashita, M. Kashiwagi, S. Miura, M. Wakahara, Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering, 2019/11/14, Without Invitation, English, The Society of Naval Architects and Ocean Engineers, Hiroshima University, preprint
  3. Study on Added Resistance with Measured Unsteady Pressure Distribution on Ship-hull Surface, Masashi Kashiwagi, Hidetsugu Iwashita, Soma Miura, Munehiko Hinatsu, The 34th International Workshop on Water Waves and Floating Bodies, 2019/04/07, Without Invitation, English, Newcastl University, Newcastle, Australia, preprint
    Related URL
  4. Visualization of the Unsteady wave Field on Ship Hull Advancing in Waves, Hironao Ohnishi, H. Iwashita, M. Kashiwagi, Y. Ito, Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering 2018, 2018/11/08, Without Invitation, English, The Japan Society of Naval Architects and Ocean Engineers, Hiroshima University, preprint
  5. An Innovative EFD for Studying Ship Seakeeping, Hidetsugu Iwashita, Masashi Kashiwagi, 33th International Workshop on Water Waves and Floating Bodies, 2018/04/04, Without Invitation, English, Guidel-Plages, France
  6. Hydrodynamics and Motions of a FOWT in the low-Speed Current, Daiki Ohno, Yasushi Higo, Hidetsugu Iwashita, International RIAM Symposium on Ocean Renewable Energy Technologies and Related Computational and Experimental Researches, 2018/01/22, Without Invitation, English, Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka
  7. An Innovative EFD for Ship Seakeeping, Hironao Ohnishi, Hidetsugu Iwashita, Masashi Kashiwagi, Takeshi Hara, Y. Ito, M. Wakahara, Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering 2017, 2017/11/16, Without Invitation, English, Hiroshima
  8. Development of a Squashu-F Code for Seakeeping Estimation, Takao Fukumoto, Hidetsugu Iwashita, Workshop on Environmental Technologies in Naval Architecture and Ocean Engineering 2017, 2017/11/16, Without Invitation, English, Hiroshima
  9. Innovative Measurement of Spatial Distribution of Unsteady Pressure on a Ship in Waves,, Hidetsugu Iwashita, Masashi Kashiwagi, Annual Meeting of the Society of Naval Architects of Korea, 2017, Without Invitation, English, Korea