Evaluation of a Model for Predicting the Tidal Velocity in Fjord Entrances

Energies

Emilia Lalander¹  Paul Thomassen² 

[1] The Swedish Centre for Renewable Electric Energy Conversion, Division of Electricity, Uppsala University, P.O. Box 534, Uppsala SE-751 21, Sweden; E-Mail:;Team Ashes, Trondheim 7036, Norway; E-Mail:

关键词: ADCP measurement;    marine current power;    numerical simulation;    renewable energy;    tidal currents;    tidal power;    velocity measurement;   

DOI  :  10.3390/en6042031

来源: mdpi

【 摘 要 】

Sufficiently accurate and low-cost estimation of tidal velocities is of importance when evaluating a potential site for a tidal energy farm. Here we suggest and evaluate a model to calculate the tidal velocity in fjord entrances. The model is compared with tidal velocities from Acoustic Doppler Current Profiler (ADCP) measurements in the tidal channel Skarpsundet in Norway. The calculated velocity value from the model corresponded well with the measured cross-sectional average velocity, but was shown to underestimate the velocity in the centre of the channel. The effect of this was quantified by calculating the kinetic energy of the flow for a 14-day period. A numerical simulation using TELEMAC-2D was performed and validated with ADCP measurements. Velocity data from the simulation was used as input for calculating the kinetic energy at various locations in the channel. It was concluded that the model presented here is not accurate enough for assessing the tidal energy resource. However, the simplicity of the model was considered promising in the use of finding sites where further analyses can be made.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.