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Wind ventilators due no electricity, no noise , small size , light weight, easy installation, long-term operation , the discharge chamber heat, moisture and bad smell to be widely used in industrial plants, commercial and civil construction . From the point of view of energy conservation , to create a high-efficiency wind ventilator has very important significance. The main research topics of the wind vane ventilator after it joined the ventilation performance, and designed a new type of guide vanes , so that increased ventilation , ventilation improved efficiency ; discusses natural wind speed and turbine speed and ventilation relationship between the mass flow rate , to help wind fan design. In this paper, vane mounted at different angles to simulate the flow field . Painted using autoCAD software entity type , meshing into GAMBIT software , then apply the commercial CFD software FLUENT the flow field numerical simulation . Were simulated vane mounting angle is 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, 105 ° and 120 ° of the overall model of the flow field , come to the best installation guide vane angle . Using the standard k-ε model equations , pressure and velocity coupling the SIMPLE algorithm , momentum, turbulent kinetic energy , dissipation rate of the second-order upwind discretization . And with no guide vane conditions ( without guide vanes ) to compare the overall model flow field , after adding vane ventilation performance has been enhanced. Designed a new guide vane , the air volume increases , improving the ventilation efficiency. The turbine using the same numerical simulation method , derived ventilator wind velocity and pressure field distribution . Studied the natural wind speed and turbine speed and ventilation mass flow rate relationship . The same standard k-ε model equations , pressure and velocity coupling the SIMPLE algorithm, momentum , turbulent kinetic energy dissipation rate using second-order upwind discretization .
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