Abstract
When a single-channel pump is used to transport living things, the rotating action of the impeller will cause damages to the living things. To improve the survival rate of the single-channel pump for transporting living things and improve the performance, the effect of the impeller wrap angle on the performance of the single-channel pump was studied by numerical simulation. The external characteristic curve is analyzed and the change of the pressure field of the flow field in the flow channel with the wrap angle is grasped. The pressure pulsation at the monitoring points is analyzed, and the influence law of the wrap angle on the performance of the single-channel pump is obtained. This law lays the foundation for subsequent single-channel pump design
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