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Most Suitable Blade Inclination Angle For Multiphase Flow in Soybean Milk Machine
Author(s): Wenqian Xu, Longhai Li, Haiyan Yin, Hua-Shu Dou
Keywords: Soybean milk machine; two phase flow; blade inclination angle; numerical simulation
The blade inclination angle of soybean milk machine is a key geometric parameter for efficient crushing. For the purpose of obtaining optimal design, the gas-liquid two-phase flow field inside a soybean milk machine is simulated. The gas holdup from simulation is in agreement with the experiment. The simulation result shows that the lower blade A has a great influence on the internal flow field of soybean milk machine, while the upper blade B has a small influence on the flow field. As the angle alphaa increases, the peak value of radial velocity decreases and moves to the interior of the cavity, so does the total pressure. When alphaa changes from -24° to -26°, the velocity vector at the bottom of the cavity changes from the connected state to the separated state, and the pressure difference between the up and the bottom surface of blade A becomes large. When alphaa=24°, the flow field has the strongest turbulent kinetic energy and dissipation. When alphab=28°, the pressure difference reaches the maximum. In summary, the best inclination angles are optimal alphaa=-24° to -26° and optimal alphab=28°, respectively.

Journal of Applied Fluid Mechanics

The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating.