UKERC EDC: Publications

This resource links to a document we hold in our system

Abstract:

The Performance Assessment of Wave and Tidal Array Systems (PerAWaT) project, launched in October 2009 with £8m of ETI investment. The project delivered validated, commercial software tools capable of significantly reducing the levels of uncertainty associated with predicting the energy yield of major wave and tidal stream energy arrays. It also produced information that will help reduce commercial risk of future large scale wave and tidal array developments.

This report involves the development of a parameterization for the fluid velocity field in the ‘end-of-near-wake’ region of a tidal current turbine wake. The parameterization links the wake velocity profile to the thrust coefficient and blockage ratio of the turbine.

Separate but related parameterizations were developed for the ‘conventional’ low-solidity turbine of Deliverable 1and the open-centre high-solidity turbine of Deliverable 2. Following this review of the literature, a new parameterization was developed based on an actuator disc blockage model, an empirical Gaussian wake velocity profile, and conservation of momentum principles.

The parameterizations for the two turbines differ in the empirical velocity profile, but are otherwise based on the same fluid dynamic principles. Comparisons were made between the new parameterizations and the CFD resultsof Deliverables 1 and 2, for the two turbine geometries.

A comparison was also made between the new parameterization and that used in the Wind-Farmer software, for the case of the low-solidity turbine.

Publication Year:

2013

Publisher:

ETI

DOI:

https://doi.org/10.5286/ukerc.edc.000389

Author(s):

Gretton, G.I.

Energy Category

Class Name:

Subclass Name:

Category Name:

Renewable Energy Sources

Ocean Energy

Language:

English

File Type:

application/pdf

File Size:

823304 B

Rights:

Energy Technologies Institute Open Licence for Materials

Rights Overview:

The Energy Technologies Institute is making this document available to use under the Energy Technologies Institute Open Licence for Materials. Please refer to the Energy Technologies Institute website for the terms and conditions of this licence. The Information is licensed "as is" and the Energy Technologies Institute excludes all representations, warranties, obligations and liabilities in relation to the Information to the maximum extent permitted by law. The Energy Technologies Institute is not liable for any errors or omissions in the Information and shall not be liable for any loss, injury or damage of any kind caused by its use. This exclusion of liability includes, but is not limited to, any direct, indirect, special, incidental, consequential, punitive, or exemplary damages in each case such as loss of revenue, data, anticipated profits, and lost business. The Energy Technologies Institute does not guarantee the continued supply of the Information. Notwithstanding any statement to the contrary contained on the face of this document, the Energy Technologies Institute confirms that it has the right to publish this document.

Further information:

N/A

Region:

United Kingdom

Publication Type:

Technical Report

Subject:

Technology

Theme(s):

Marine

Related Dataset(s):

No related datasets