Abstract
In this paper, the optimal installation position of pitot tube for measuring L-type pitot coefficient in wind tunnel is studied. By analyzing the calculation formula of pitot tube coefficient, it is concluded that the influencing factor of pitot tube coefficient measurement is the difference between pitot tube total pressure and static pressure. The CFD simulation of the wind speed field near the pitot tube in the wind tunnel shows that the position that may affect the measurement results is close to the side wall of the wind tunnel. Experiments are carried out at these positions. The pitot tube is installed at different positions in the wind tunnel, the differential pressure value is measured, and the area with small differential pressure change is observed. It is concluded that the optimal installation position for pitot tube measurement is the middle position more than 50mm away from the standard pitot tube and more than 50mm away from the side wall of the wind tunnel.
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