Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• A Study on Risk Assessment for Anchor Dragging Using On-board Measurement Data of a Single Anchored Vessel

  Saito Akira, Iseki Toshio, Masuda Mitsuhiro , 2023

  Journal of the Japan Society of Naval Architects and Ocean Engineers

  DOI

• 2021S-OS4-4 Improvement of Calculation Method for Bayesian Estimation of Directional Wave Spectrum

  Terada Daisuke, Iseki Toshio , 2021.05

  Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers

  DOI

• Numerical study on Estimation of Hydrodynamic Force acting on Open-frame Underwater Vehicle

  Suzuki Hiroyoshi, Okuda Yosuke, Nagai Yoshiki, Iseki Toshio, Watanabe Yoshitaka, Ohta Yutaka , 2021

  Journal of the Japan Society of Naval Architects and Ocean Engineers

  DOI

• 波力推進に関する基礎的実験について

  井関俊夫 , 2019.10

  日本航海学会講演予稿集(Web)

• Real-time estimation of the ship manoeuvrable range in wind

  Toshio Iseki , 2019.10

  Ocean Engineering

  DOI

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Books 【 display / non-display 】

Books 【 display / non-display 】

• Progress in Maritime Technology and Engineering – Guedes Soares & Santos (Eds)　　（1243p～1250p

  Toshio Iseki , 2018.10

  CRC Press, Taylor & Francis Group (London) , Experimental study on auto-parametrically excited heaving motion of a spar-buoy , 677-684

• Maritime Technology and Engineering – Guedes Soares & Santos (Eds)

  Toshio Iseki , 2015.02

  CRC Press, Taylor & Francis Group (London) , Dynamic Control of Oscillation Characteristics of a Spar-buoy , 1243-1250

• The Practice of　Time Series Analysis

  Hideo Nakamura,他24名 , 1998.07

  Springer-Verlag , Estimation of Directional Wave Spectra Using Ship Motion data , 115-130

• 時系列解析の実際Ｉ　（再掲）

  中村秀雄,他11名 , 1994.06

  朝倉書店 , 第７章：船体動揺データを用いた方向波スペクトルの推定 , 125-145

Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• パラメトリック励振を利用した波力発電高効率化システムの開発

  Project Period (FY)： 2020/04  -  2023/03  Investigator(s): 井関 俊夫

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  20K04935 

• Study on wave energy converters based on auto-parametrically excited oscillations

  Project Period (FY)： 2017/04  -  2020/03  Investigator(s): ISEKI TOSHIO

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  17K06960 

  The purpose of this research work is to improve the efficiency of wave energy converter systems by utilizing the nonlinear auto-parametrically excited oscillation called Mathieu-type instability. For the coupled motions of pitch and heave of a spar-buoy type point absorber, the kinetic energy was transferred from the heave mode to the pitch mode and used to fluctuate the restoring moment. In some experiments, it was observed that the large pitch motion occurred suddenly, and it was theoretically examined whether it could be explained as the nonlinear auto-parametrically excited oscillation based on Mathieu-type instability. Finally, in order to utilize the phenomenon for wave energy converters, the method to make the phenomenon sustainable was considered.

• 省エネルギー型船舶運航支援システムの開発

  Project Period (FY)： 2014/04  -  2017/03 

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  26420822 

• 浮体式波力発電システムの高効率化に関する基礎的研究

  Project Period (FY)： 2011/04  -  2014/03 

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  23560966 

• 非線形・非定常船体運動のスペクトル解析に関する研究

  Project Period (FY)： 2008/04  -  2011/03 

  Grant-in-Aid for Scientific Research(C)  Principal Investigator  20560744 

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Lesson Subject 【 display / non-display 】

Lesson Subject 【 display / non-display 】