Numerical simulation of a new type of cross flow tidal turbine using OpenFOAM – Part I: Calibration of energy extraction

This paper introduces a new CFD based Immersed Body Force (IBF) model, and examines the performance of a new type of tidal turbine, the Momentum Reversal Lift (MRL) turbine, developed by Aquascientific Ltd using the open source computational fluid dynamics (CFD) code OpenFOAM. The IBF model was added as a forcing function into the existing large eddy simulation model to create a momentum change in the fluid flow induced by the MRL turbine. An experimental study was performed on a small scale model to determine the operating efficiency of the turbine and the data was used to validate the IBF model.