Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank

Journal Article

Title: Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank

Author:

Bahaj, A.; Molland, A.; Chaplin, J.; Batten, W.

Publication Date:

March 1, 2007

Journal:

Renewable Energy

Volume:

Issue:

Pages:

407-426

Publisher:

Elsevier

Affiliation:

University of Southampton

Technology:

Current

Collection Method:

Lab Data

Engineering:

Performance

Document Access

Website:

External Link

Citation

Bahaj, A.; Molland, A.; Chaplin, J.; Batten, W. (2007). Power and thrust measurements of marine current turbines under various hydrodynamic flow conditions in a cavitation tunnel and a towing tank. Renewable Energy, 32(3), 407-426. https://doi.org/10.1016/j.renene.2006.01.012

Abstract

The results of cavitation tunnel and tank tests on an 800 mm diameter model of a marine current turbine (MCT) are presented. The tests were carried out in a 2.4 m×1.2 m cavitation tunnel and the 60 m towing tank. Results for power and thrust coefficients are presented for a range of tip speed ratio and pitch settings for various conditions. The results of this investigation provided an insight into the operation of a singe turbine in straight or yawed flow, the effect on performance of changes in the tip immersion of the rotor, the interference between twin rotors and the likely areas of cavitation inception. In addition, the analysed results presented provide useful information for the hydrodynamic design of MCTs and detailed data for the validation of numerical models.