Next Article in Journal
Piped-Water Supplies in Rural Areas of the Mekong Delta, Vietnam: Water Quality and Household Perceptions
Previous Article in Journal
Seasonal Accumulation and Depletion of Local Sediment Stores of Four Headwater Catchments
Water 2014, 6(8), 2164-2174; doi:10.3390/w6082164
Article

The Effects of Surface Debris Diversion Devices on River Hydrodynamic Conditions and Implications for In-Stream Hydrokinetic Development

Received: 19 March 2014; in revised form: 21 June 2014 / Accepted: 16 July 2014 / Published: 24 July 2014
View Full-Text   |   Download PDF [842 KB, uploaded 24 July 2014]   |   Browse Figures
Abstract: Floating objects designed to divert woody debris—known as debris diversion devices—can protect hydrokinetic turbines deployed in rivers; they also change the hydrodynamic conditions of a river, at least locally. Modifications associated with velocity adjustments in both magnitude and direction would be expected. Thus, one could assume that extra macro-turbulent levels would be found immediately behind a device and downstream of that location. This article presents a set of cross-sectional and longitudinal velocity measurements carried out to quantify these effects. Results show important changes in the velocity components. In addition, significant changes in the vorticity field, calculated along cross-sectional profiles, demonstrate the role of a submerged chain used to maintain the debris diversion device in place. More importantly, findings suggest that hydrokinetic turbines should not be installed in a river’s central area behind a debris diversion device, due to the additional turbulence created by the submerged chain.
Keywords: surface woody debris; debris diversion devices; vorticity; hydrokinetics; river hydrodynamics; macro-turbulence surface woody debris; debris diversion devices; vorticity; hydrokinetics; river hydrodynamics; macro-turbulence
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Toniolo, H. The Effects of Surface Debris Diversion Devices on River Hydrodynamic Conditions and Implications for In-Stream Hydrokinetic Development. Water 2014, 6, 2164-2174.

AMA Style

Toniolo H. The Effects of Surface Debris Diversion Devices on River Hydrodynamic Conditions and Implications for In-Stream Hydrokinetic Development. Water. 2014; 6(8):2164-2174.

Chicago/Turabian Style

Toniolo, Horacio. 2014. "The Effects of Surface Debris Diversion Devices on River Hydrodynamic Conditions and Implications for In-Stream Hydrokinetic Development." Water 6, no. 8: 2164-2174.


Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert