Therefore, closed impeller was the best design, where the maximum stress was the lowest (86.09MPa) and can be more reliable in real life application.įinite Element Analysis is an analytical engineering tool originated by the Aerospace and nuclear power industries to find usable, approximate solutions to problems with many complex variables. Throughout the analysis, closed impeller blades were set to produce the least stress and displacement in comparison to other designs. A pressure load of 1.866 MPa was applied evenly to the impellers with a rotation of 1,100 rpm and a torque of 29.187 Nm. The analysis revealed that the higher the outlet blade angle is to a point in comparison to the blade at inlet, the higher the head and the higher the pressure at the outlet will be. Calculations were performed to predict the design discharge and understand the impact on the impeller if the blade angle changes. This analysis provided an insight of performance of design where the blade’s angle, width and shrouds are kept constant throughout the process. The geometry of centrifugal pump impellers was modelled and analysed using Siemens NX™ software. In this paper, 4 different designs of a centrifugal pump impeller were analysed and compared using finite element analysis (FEA) under static analysis. The main requirement is to ensure that the impeller blade can withstand the level of stress thereby reducing the chance of blade fracture. Therefore, the impeller requires as many analysis as possible to maximise its efficiency. The impeller blade is among the many critical components in a centrifugal pump that affect the efficiency of the pump, as it is the component through which the fluid passes. Performance of the impellers was compared based on inlet and outlet power, impeller efficiency, pressure distribution, and static head pressure produced. As a result, the performance of the impeller increases as the efficiency increases. It can also be observed that the efficiency of the impeller increases as the rotation speed increases. The pressure increases gradually from impeller inlet to impeller outlet. From the simulation results, it can be observed that as the rotation speed of the impeller increases, the pressure within the impeller increases. Shear Stress Transport (SST) was chosen for turbulence model for this project. Design and simulation were conducted using ANSYS CFX, using the Navier-Stokes equation. This paper revolves around the idea of design and analysis of centrifugal pump for performance enhancement within the pump specifications. Its function is to transport liquid from one place to another using energy applied to the pump. Centrifugal pump usage has increased over the past year due to its importance and efficiency.
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