Tim Daly
Sustainable Energy Research Group, University of Southampton, Southampton, United Kingdom
Luke E. Myers
Sustainable Energy Research Group, University of Southampton, Southampton, United Kingdom
AbuBakr S. Bahaj
Sustainable Energy Research Group, University of Southampton, Southampton, United Kingdom
Ladda ner artikel
http://dx.doi.org/10.3384/ecp110572262Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden
Linköping Electronic Conference Proceedings 57:16, s. 2262-2269
Publicerad: 2011-11-03
ISBN: 978-91-7393-070-3
ISSN: 1650-3686 (tryckt), 1650-3740 (online)
The installation of arrays and farms is the next major step in the development of tidal energy converters. Many tidal farms are currently in the process of development. A number of studies have also identified potentially lucrative sites for future farm and array development elsewhere. In some of these sites; the flow velocities can at least in part be attributed to the presence of constraining landmasses and the resultant splitting of channels into two or more sub channels. Given the cubic relationship between flow velocity and kinetic energy flux; even modest acceleration in these areas can cause a considerable increase the potential power available.
The analysis in this paper investigates flow acceleration effects in a split tidal channel due to the presence of tidal turbine arrays. As well as their presence; the effect of changing lateral and longitudinal position of the array and number of turbines in the array was also examined. Results show that flow acceleration of up to 14% can occur in an empty channel due to the presence of tidal arrays. This could potentially have major implications for tidal farm design in areas where channels branch into multiple sub channels.
Split tidal channel; Obstruction; Actuator fences; Flow acceleration; Acoustic Doppler velocimeter
[1] T. Daly; L.E. Myers; A.S. Bahaj; Experimental analysis of the local flow effects around single row tidal turbine arrays; Proceedings of the 3rd International Conference on Ocean Energy; 2010.
[2] A. Mortimer; Tidal power with Hammerfest Strom technology: Towards commercialisation; Proceedings of 3rd International Conference on Ocean Energy; 2010.
[3] R.H. Karsten; J.M. McMillan; M.J. Lickley; R.D. Haynes; Assessment of the tidal current energy in the Minas Passage; Bay of Fundy; Proceedings of the Institution of Mechanical Engineers; Part A: Journal of Power and Energy 222; 5; pp. 493- 507
[4] B.L. Polagye; M. Kawase; P. Malte; In-stream tidal energy potential of Puget sound; Washington; Proceedings of the Institution of Mechanical Engineers; Part A: Journal of Power and Energy 223; 5; pp. 571- 587
[5] J.F. Atwater; G.A. Lawrence; Power potential of a split tidal channel; Renewable energy 35; 2; pp. 329-332.
[6] C. Garrett; P. Cummins; The power potential of tidal currents in channels; Proceedings of the Royal Society A: Mathematical; Physical and Engineering Sciences; 461; 2060; pp. 2563-2572.
[7] G. Sutherland; M. Foreman; C. Garrett; Tidal current energy assessment for Johnstone Strait; Vancouver Island; Proceedings of the Institution of Mechanical Engineers; Part A: Journal of Power and Energy 221; 2; pp. 147- 157
[8] B.L. Polagye; P.C. Malte; Far field dynamics of tidal energy extraction in channel networks; Renewable energy; 36; 1; 222-234.
[9] L.E. Myers; A.S. Bahaj; Experimental analysis of the flow field around horizontal axis tidal turbines by use of scale mesh disk rotor simulators; Ocean engineering; 37; 2-3; 218-227.
[10] L. Cea; J. Puertas; L. Pena; Velocity measurements on highly turbulent free surface flow using ADV; Experiments in fluids 42; 3; pp. 333-348.
