In order to capture significant energy,hydrokinetic turbines need to be built in large arrays within regions such as rivers,man-made channels or tidal straits where the local bathmetry focuses the flow.The layout of these arrays of turbines can significantly change the amount of energy captured from the flow.The Power output expected form specific array must be predicted with high level of certainty to minimize the risks taken by developers and stake holders.These predictions can be achived through experimental studies on small scale deployments in laborataries.For instance simple farm models composed of a few turbines have been studies in a water channel[3][4].It is however expensive to perform such experimental works to study the device parameters in large scale turbine arrays and in real environmental condition.