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Title: Simulating environmental changes due to marine hydrokinetic energy installations.

Abstract

Marine hydrokinetic (MHK) projects will extract energy from ocean currents and tides, thereby altering water velocities and currents in the site's waterway. These hydrodynamics changes can potentially affect the ecosystem, both near the MHK installation and in surrounding (i.e., far field) regions. In both marine and freshwater environments, devices will remove energy (momentum) from the system, potentially altering water quality and sediment dynamics. In estuaries, tidal ranges and residence times could change (either increasing or decreasing depending on system flow properties and where the effects are being measured). Effects will be proportional to the number and size of structures installed, with large MHK projects having the greatest potential effects and requiring the most in-depth analyses. This work implements modification to an existing flow, sediment dynamics, and water-quality code (SNL-EFDC) to qualify, quantify, and visualize the influence of MHK-device momentum/energy extraction at a representative site. New algorithms simulate changes to system fluid dynamics due to removal of momentum and reflect commensurate changes in turbulent kinetic energy and its dissipation rate. A generic model is developed to demonstrate corresponding changes to erosion, sediment dynamics, and water quality. Also, bed-slope effects on sediment erosion and bedload velocity are incorporated to better understand scourmore » potential.« less

Authors:
 [1]; ;  [2];
  1. Sea Engineering Inc., Santa Cruz, CA
  2. Sandia National Laboratories, Albuquerque, NM
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1028327
Report Number(s):
SAND2010-5418C
TRN: US201122%%195
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the Oceans 2010 MTS/IEEE Seattle Conference held September 20-23, 2010 in Seattle, WA.
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; ALGORITHMS; ESTUARIES; HYDRODYNAMICS; KINETIC ENERGY; MODIFICATIONS; REMOVAL; SEDIMENTS; VELOCITY; WATER; WATER CURRENTS; WATER QUALITY

Citation Formats

Jones, Craig A, James, Scott Carlton, Roberts, Jesse Daniel, and Seetho, Eddy. Simulating environmental changes due to marine hydrokinetic energy installations.. United States: N. p., 2010. Web.
Jones, Craig A, James, Scott Carlton, Roberts, Jesse Daniel, & Seetho, Eddy. Simulating environmental changes due to marine hydrokinetic energy installations.. United States.
Jones, Craig A, James, Scott Carlton, Roberts, Jesse Daniel, and Seetho, Eddy. 2010. "Simulating environmental changes due to marine hydrokinetic energy installations.". United States.
@article{osti_1028327,
title = {Simulating environmental changes due to marine hydrokinetic energy installations.},
author = {Jones, Craig A and James, Scott Carlton and Roberts, Jesse Daniel and Seetho, Eddy},
abstractNote = {Marine hydrokinetic (MHK) projects will extract energy from ocean currents and tides, thereby altering water velocities and currents in the site's waterway. These hydrodynamics changes can potentially affect the ecosystem, both near the MHK installation and in surrounding (i.e., far field) regions. In both marine and freshwater environments, devices will remove energy (momentum) from the system, potentially altering water quality and sediment dynamics. In estuaries, tidal ranges and residence times could change (either increasing or decreasing depending on system flow properties and where the effects are being measured). Effects will be proportional to the number and size of structures installed, with large MHK projects having the greatest potential effects and requiring the most in-depth analyses. This work implements modification to an existing flow, sediment dynamics, and water-quality code (SNL-EFDC) to qualify, quantify, and visualize the influence of MHK-device momentum/energy extraction at a representative site. New algorithms simulate changes to system fluid dynamics due to removal of momentum and reflect commensurate changes in turbulent kinetic energy and its dissipation rate. A generic model is developed to demonstrate corresponding changes to erosion, sediment dynamics, and water quality. Also, bed-slope effects on sediment erosion and bedload velocity are incorporated to better understand scour potential.},
doi = {},
url = {https://www.osti.gov/biblio/1028327}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Aug 01 00:00:00 EDT 2010},
month = {Sun Aug 01 00:00:00 EDT 2010}
}

Conference:
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