A model of relative flow velocity around a tidal turbine blade

Ovaj rad se bavi problematikom modela strujanja morske vode (struje) i morskih valova, koje nastrujavaju na podvodnu turbinu ili HATT (eng. horizal axil tidal turbine, tj. plimna turbina horizontalne osi). Valovi koji nastrujavaju na turbinu mogu dolaziti pod različitim kutovima u odnosu na plimnu turbinu, čime se mijenja slika strujanja i relativna brzina nastrujavanja na lopaticu plimne turbine. Nadalje to mijenja CL koeficijent uzgona i CD koeficijent otpora. Za svaki kut kojim val upada na plimnu turbinu mijenja se relativna brzina, time je odziv lopatica drugačiji, mijenja se raspodjela sila i momenata uzduž lopatice plimne turbine.This paper deals with the problem of the model of sea current and incident sea waves, as an inflow on the underwater turbine or HATT (horizontal axil tidal turbine), of the horizontal axis). The waves encountr the turbine at a different angles, thous changing the flow pattern and the relative flow rate to the tidal turbine blade. Furthermore th flow changes the CL buoyancy coefficient and the CD drag coefficient. For each angle at which the wave enters the tidal turbine, the relative speed changes are developed, thus the blade response is different so, the distribution of forces and moments along the tidal turbine blade changes