MURAI Motohiko

J-GLOBAL         Last updated: May 16, 2019 at 02:41
 
Avatar
Name
MURAI Motohiko
E-mail
murai-motohiko-pzynu.ac.jp
Job title
Associate Professor
Degree
Doctor of Engineering(The University of Tokyo), Doctor of Engineering(The University of Tokyo)
Other affiliation
Yokohama National University

Research Areas

 
 

Academic & Professional Experience

 
Apr 2006
 - 
Today
Associate Professor, Yokohama National University Faculty of Environment and Information Sciences
 
Apr 2001
 - 
Mar 2006
Associate Professor, Yokohama National University Faculty of Environment and Information Sciences
 
Apr 1999
 - 
Mar 2001
Yokohama National University Associate Professor, Faculty of Engineering Division of Artificial Environment and Systems
 
Aug 1997
 - 
Mar 1999
Reserch Associate, University of Tokyo Faculty of Engineering Department of Naval Architecture and Ocean Engineering
 
 
   
 
Yokohama National University
 

Education

 
 
 - 
Mar 1995
Navalarchtects and Ocean engineerings, Graduate School, Division of Engineering, The University of Tokyo
 
 
 - 
Mar 1993
Faculty of Engineering, The University of Tokyo
 
 
 - 
Mar 1995
Navalarchtects and Ocean engineerings, Graduate School, Division of Engineering, The University of Tokyo
 
 
 - 
Mar 1993
Faculty of Engineering, The University of Tokyo
 

Committee Memberships

 
Sep 2011
 - 
Today
ITTC Specialist Committee on Testing of Marine Renewable Devices  Member
 
Feb 2015
 - 
Today
IEC(International Electrotechnical Commission) TC-114(Marine energy - Wave, tidal and other water current converters) PT 62600-202  member
 
Sep 2011
 - 
Today
ITTC Specialist Committee on Testing of Marine Renewable Devices  Member
 
Sep 2019
 - 
Today
Chair
 
Feb 2015
 - 
Today
IEC(International Electrotechnical Commission) TC-114(Marine energy - Wave, tidal and other water current converters) PT 62600-202  member
 

Published Papers

 
Qiao Li, Motohiko Murai, Syu Kuwada
Journal of Energies   2018(11) 2964   Nov 2018   [Refereed]
A linear electrical generator can be used on wave energy converter for converting the kinetic energy of a floating structure to the electricity. A wave farm consists of multiple wave energy converters which equipped in a sea area. In the present p...
Qiao Li, Motohiko Murai
Journal of the Japan Society of Naval Architects and Ocean Engineers   (27) 125-132   Aug 2018   [Refereed]
There are a lot of numerical analysis for solving hydrodynamic responses of a floating body in time domain. Most of them can give a theoretical solution in given irregular waves. It means, however, that the solution can be obtained only if the acc...
Ocean Future City Concept GREEN FLOAT Part1, Outline of Plan
Ikuo YOSHIDA, Masaki TAKEUCHI, Takashi KUNUGI, Tomohiro BESSHO, Shuhei ONO, Masanobu HASEBE, Motohiko MURAI
The 27th Ocean Engineering Symposium   OES27-034   Aug 2018
Since the Industrial Revolution, global population growth problems and problems of sea level rise accompanying the increase in CO2 emissions are occurring. As a solution to this, floating cities that use seas occupying 70% of the earth's surface a...
Ocean Future City Concept GREEN FLOAT PART2, A Study on Vibration of High-Rise Floating Building
Takashi KUNUGI, Ikuo YOSHIDA, Shuhei ONO, Tomohiro BESSHO, Masanobu HASEBE, Tatsuro HIRATO, Kenji SUZUKI, Masaki TAKEUCHI, Motohiko MURAI
The 27th Ocean Engineering Symposium   OES27-035   Aug 2018
Floating high-rise buildings have the characteristic of vibrating easily due to wave and wind. As an evaluation method, O'Hanlon proposed vomiting ratio to evaluate the vibration quantitatively, that is practically used.
Architectural Institute of...
STUDY ON A TIME DOMAIN PREDICTION METHOD FOR WAVE FORCE
Li. Qiao, M.Murai
OMAE2018-77720   Jun 2018   [Refereed]
There are a lot of numerical analysis for solving hydrodynamic responses of a floating body in the time domain. Most of them can give a theoretical solution in given irregular waves. It means, however, that the solution can be obtained only if the...

Misc

 
A Propose of Prediction Method for Wave Force and A strategy of a control algorithm for a point absorber type WEC
Qiao Li, Motohiko Murai
   Sep 2017
for efficiently transferring energy. The control force from PTO system is decided wave condition especially the wave force. In this paper, a new method is proposed for predicting the wave force from the displacement of a sea wave. The method that ...
The design of an unit-type floating disaster prevention base and the proposal of its usage along a timeline of the restoration
Anna Odake, Motohiko Murai
   Jul 2017
Qiao Li, Motohiko Murai, Syu Kuwada
Proc.ASME2017, Int. Conf. OMAE2017   OMAE2017-61656   Jun 2017   [Refereed]
A linear electrical generator is a kind of device which can be used to wave energy converter, for directly converting mechanical energy of a floating structure into electrical energy. A wave farm consists of multiple wave energy converters which e...
Motohiko Murai, Kensaku Takahashi
Proc.ASME2017, Int. Conf. OMAE2017   OMAE2017-61656   Jun 2017   [Refereed]
The progress of the global warming is one of our key issue should be overcome in the 21st century. We should balance the energy consumption and reduction of exhausting greenhouse effect gas. The wind energy is expected as one of the key technology...
Viscous Drift Force on a Semisubmersible in Irregular Waves
Ryo Fukushima, Shunji Kato, Kazuhiro Yukawa, Motohiko Murai
Conf. Proc. The Japan Society of Naval Architects and Ocean Engineers   (24) 665-668   May 2017

Books etc

 
Ship Geometry and Fundamentals of Hydrostatics (Naval Architecture and Ocean Engineering Series 1
Ikeda Yoshiho, Yoshitaka Furukawa, Toru Katayama, Tokihiro Katsui, Motohiko Murai, Satoru Yamaguch (Part:Joint Work)
SEIZANDO   Aug 2018   ISBN:9784425714360
Environmental Management of Marine Ecosystems
Md. Nazrul Islam, Sven Erik Jorgensen (Part:Joint Work, Inclusive Impact Index 'TripleI')
CRC Press   Mar 2018   ISBN:9781498767729
https://www.crcpress.com/Environmental-Management-of-Marine-Ecosystems/Islam-Jorgensen/p/book/9781498767729
Ship Geometry and Fundamentals of Hydrostatics (Naval Architecture and Ocean Engineering Series 1)
Ikeda Yoshiho, Yoshitaka Furukawa, Toru Katayama, Tokihiro Katsui, Motohiko Murai, Satoru Yamaguchi (Part:Joint Work)
成山堂書店   Aug 2018   ISBN:9784425714360
Environmental Management of Marine Ecosystems
Md. Nazrul Islam, Sven Erik Jorgensen (Part:Joint Work, Inclusive Impact Index 'TripleI')
CRC Press   Mar 2018   ISBN:9781498767729
https://www.crcpress.com/Environmental-Management-of-Marine-Ecosystems/Islam-Jorgensen/p/book/9781498767729

Conference Activities & Talks

 
ocean renewable energy
APhydro2012   4 Sep 2012   
Ocean renewable energy
Oceans2012   22 May 2012   
Ocean space utilozation
Aug 2011   
Ocean space utilozation
Aug 2011   
Ocean space utilization
18 May 2011   

Works

 
Muti-arrays supported very large floating Structure
The Others   2000
Muti-arrays supported very large floating Structure
The Others   2000

Research Grants & Projects

 
A Study on Hydroelastic behaviour of a Very Large Floating Structure
Development of experiment methods on a very large floating structure in a very small water tank
Evaluation of Ocean Environment at Artificial tideland cosidering with human impacts
A Study of a ocean space utilization
Renewable energy in Ocean