TY - JOUR
T1 - Tidal resource and interactions between multiple channels in the Goto Islands, Japan
AU - Waldman, S.
AU - Yamaguchi, S.
AU - O'Hara Murray, R.
AU - Woolf, D.
N1 - Funding Information:
This work was made possible by a research exchange to Kyushu University, Japan. Travel funding was received from the MASTS pooling initiative (the Marine Alliance for Science and Technology for Scotland) and their support is gratefully acknowledged. MASTS is funded by the Scottish Funding Council (grant reference HR09011) and contributing institutions. We thank Kyushu University, and in particular Prof. Changhong Hu, for hosting the exchange and providing office space and computing time. The participation of David Woolf was enabled by the UK Engineering and Physical Sciences Research Council (EPSRC) through the EcoWatt2050 project (EP/K012851/1). The Ministry of Environment of Japan is gratefully acknowledged for permission to use observation data, which were obtained through the project for “Promotion of Realization of Tidal Current Power Generation”, supported by the Ministry, in 2014 and 2015. The FVCOM model of the Goto Islands was originally developed and validated by Dr. Huihui Sun, and FVCOM itself is by Dr. Changsheng Chen. The first author thanks Dr. Patxi Novo Garcia for both technical assistance and friendship during his time in Japan.
Publisher Copyright:
© 2017 The Authors.
PY - 2017/9
Y1 - 2017/9
N2 - The Goto Islands in Nagasaki Prefecture, Japan, contain three parallel channels that are suitable for tidal energy development and are the planned location for a tidal energy test centre. Energy extraction is added to a 3D numerical hydrodynamic model of the region, using a sub-grid momentum sink approach, to predict the effects of tidal development. The available resource with first-generation turbines is estimated at 50-107MW peak output. Spreading turbine thrust across the whole cross-section to prevent bypass flow results in a 64% increase in peak power in one channel, highlighting the importance of 3D over 2D modelling. The energy available for extraction in each strait appears to be independent of the level of extraction in other straits. This contrasts with theoretical and numerical studies of other multi-channel systems. The weak interactions found in this study can be traced to the hydraulic effects of energy extraction not extending to neighbouring channels due to their geometry.
AB - The Goto Islands in Nagasaki Prefecture, Japan, contain three parallel channels that are suitable for tidal energy development and are the planned location for a tidal energy test centre. Energy extraction is added to a 3D numerical hydrodynamic model of the region, using a sub-grid momentum sink approach, to predict the effects of tidal development. The available resource with first-generation turbines is estimated at 50-107MW peak output. Spreading turbine thrust across the whole cross-section to prevent bypass flow results in a 64% increase in peak power in one channel, highlighting the importance of 3D over 2D modelling. The energy available for extraction in each strait appears to be independent of the level of extraction in other straits. This contrasts with theoretical and numerical studies of other multi-channel systems. The weak interactions found in this study can be traced to the hydraulic effects of energy extraction not extending to neighbouring channels due to their geometry.
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U2 - 10.1016/j.ijome.2017.09.002
DO - 10.1016/j.ijome.2017.09.002
M3 - Article
AN - SCOPUS:85030634524
SN - 2214-1669
VL - 19
SP - 332
EP - 344
JO - International Journal of Marine Energy
JF - International Journal of Marine Energy
ER -