Experimental and numerical analysis of domestic centrifugal pump

摘要

Centrifugal pumps are most commonly used in different fields like industries, agriculture and domestic applications.Computational Fluid Dynamics is the most commonly used tools for simulation and analysis.CFD simulation makes it possible to visualize the flow condition inside centrifugal pump.The main objective of this work is to present the CFD analysis and experimental analysis of a domestic centrifugal pump.First of all, this paper revolves around the idea of investigating the effectiveness and distribution of velocity and pressure contours and the failure analysis of a pump which is available in the market.Second part comprises of the experimental analysis of the pump.Failure analysis includes the static structural analysis in order to find the total deformation of the impeller.Modelling of the centrifugal pump is carried out using CATIA V5.The complex internal flow in centrifugal pump can be well predicted through ANSYS-CFX and structural analysis is done in ANSYS.From the results, inlet and outlet pressures are obtained and thus the head generated by the pump has been found out.Head obtained from CFD analysis shows the percentage variation with the head specified in the specification of pump.From the failure analysis, total deformation affected by the impeller has been found out.According to the failure analysis, the design of pump can be modified to get better performance.Thus the impeller is modified to get a better performance.Numerical & experimental analysis was repeated using the modified impeller and the results are compared.