Numerical Study on the Performance of Centrifugal Pumps with a Varied Impeller Blade

Abstract

A centrifugal pump is essential for energy conservation. Numerical simulation has become the primary tool for predicting pump performance and designing its structure, thanks to the advancement of computational fluid dynamics (CFD). The impeller is the most critical component of a centrifugal pump because it converts mechanical energy into hydraulic energy. As a result, impeller-related parameters have a direct impact on pump performance. The effect was calculated analytically by applying the model to different blades.At various blade circumstances, the results demonstrated that the blade has a considerable but equal influence on the head, shaft power, and efficiency of the centrifugal oil pump. With more blades, the overall hydraulic loss in the impeller and volute increases. The head deterioration has been investigated for four IGVF on oil-gas flow. By varying the number of blades, the pump head and efficiency were tested in this part. To arrive at a solution, the computations were carried out at various flow rates Q/Qdes,w=0.8-1.2. The three types were compared in terms of head and efficiency at various flow rates.On the other hand, the volume of the numerically examined centrifugal pump is the same for all types. This explains the loss order in the three cases, which is as follows: the case with the most blades is the best, followed by the case with the most blades, and finally the case with the fewest blades.