A Calculation Method of Particle Sliding Velocity in Pump Based on Clean Water Internal Flow Calculation
A technology of slip velocity and calculation method, which is applied in fluid velocity measurement, velocity/acceleration/impact measurement, instruments, etc., and can solve problems such as the slip velocity of particles in the pump that have not yet been seen
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[0034] A double-vane pump with a specific speed of 111, its design working condition: Q d =26m 3 / h, H=2.68m, n=750r / min.
[0035] Step 1. Use high-speed photogrammetry to measure the trajectory and velocity distribution of particles in the pump.
[0036] (1) Selection of measurement area and particles with different physical properties.
[0037] Select the middle section of the double vane pump as the measurement plane, such as figure 2 shown. The impeller rotates clockwise, and the angle between the suction surface of the blade facing the tongue and the X axis is θ=28°.
[0038] Select spherical rubber ball particles with a density slightly greater than that of fluid medium water, with a particle size of 12mm and a density of 1.09g / mm 3 , 1.2g / mm 3 , 1.75g / mm 3 .
[0039] (2) The measurement method of the velocity field in the pump.
[0040] The particle motion in the pump is measured using the phase averaging method. The absolute velocity field of the two-phase f...
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