Effects of impeller shape of submersible nonclogging pump on its performance

초록

This study was performed to develop a high-efficiency submersible nonclogging pump impeller. Toward this end, we simulated the effect of some parameters such as the outlet position of a blade (h<inf>I</inf>), outlet width of a blade (b<inf>2</inf>), and hub profile on the pump efficiency by using the commercial codes ANSYS CFX and BladeGen. The results showed that the pump efficiency was proportional up to h<inf>I</inf> = 38 mm and b<inf>2</inf> = 55 mm. It remained constant over these values. However, the head and shaft power were proportional to h<inf>I</inf> and b<inf>2</inf> in the simulated ranges. The effects of hub profile changes on the pump efficiency were relatively small compared to those of the other parameters. © 2012 The Korean Society of Mechanical Engineers.

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