|
|
Publications
Zeng, C. and Guedes Soares, C. (2023), A new blade element momentum method for tandem counter-rotating marine current turbines, Trends in Renewable Energies Offshore, Guedes Soares, C. (Ed.), Taylor and Francis Group, London, UK, pp. 179-188
Tandem counter-rotating turbines offer the advantages of axial torque cancellation and no possibility of cavitation that makes it suitable for marine current turbine applications. A new blade element momentum theory is developed in this work that is capable of counter-rotating turbine simulations. The axial gap coefficient is introduced to evaluate the interactions of the rotors. And the swirl imparted by the front rotor is included by the front rotor wake as the inflow to the rear rotor. The wake expansion effect is also considered and the accumulative expansion of the inner stream columns is not neglected. A series of simulations are carried out to compare with the experiments. The code developed in this work shows good agreement with the experiment in terms of the power coefficient. For the wake between the rotors, the estimates in this work are close to the results measured in the experiment for the majority of the stream columns.
If you did not manage to obtain a copy of this paper: Request a copy of this article
For information about all CENTEC publications you can download: Download the Complete List of CENTEC Publications
|