Author(s): Kazuhisa Tsunekawa; Adriano Coutinho De Lima; Norihiro Izumi
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Keywords: No Keywords
Abstract: An accurate prediction of the turbulent flow field in flows with submerged vegetation is relevant for practical problems such as seaweed cultivation, sea bed and river bed erosion control, restoration of degraded underwater habitats, water quality control, construction of shelter for economically important fish and prediction of impacts on submerged vegetation and associated ecosystems caused by flow variation. The turbulence in these flows is characterized by two distinct scales: a small scale coupled with the diameter of the vegetated elements and a large scale coupled with the height of the canopy or the depth of the flow. In this work, linear stability analysis is performed to ascertain the conditions that are required for the occurrence of a large-scale turbulence generated by the differential drag due to the presence of submerged vegetation.
Year: 2018