Calibration and analysis of the suspension velocity of broken rice
Aiming at the problems of high energy consumption and high loss rate of broken rice,the suspen-sion velocity of broken rice was tested.Broken rice particles with different particle sizes(1.0 mm,1.3 mm,1.5 mm,1.8 mm,2.0 mm)were taken as experimental objects.Based on CFD-DEM coupling simulation test,the simulated suspension velocities of broken rice are 4.93 m/s,5.99 m/s,6.98 m/s,7.95 m/s and 8.5 m/s,respectively.The suspension velocities of broken rice are 4.52 m/s,5.42 m/s,6.59 m/s,7.59 m/s and 8.23 m/s,respectively.The maximum relative error is 10.5％and the minimum relative error is 3.3％.By modifying the simulation measurement results,the simulated suspension velocity correction coefficients are 0.92,0.90,0.94,0.95 and 0.97 respectively.The research results provide theoretical reference for the me-chanical design and optimization of air-separation equipment for rice bran and broken rice.
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