Dynamic modeling and sensitivity analysis of a tubular pump unit during starting process

Abstract

Dynamic characteristics and sensitivity analysis of a tubular pump unit during starting process are proposed in this paper. A dynamic model of the pump unit, suitable for describing its transient characteristics during starting process, is established by using rigid body dynamics, fluid dynamics and hydraulic theory. The extended Fourier amplitude sensitivity test (EFAST) analysis method is used to investigate the influence of unit parameters on system outputs. Simulation of the pump unit is carried out for the starting process to verify the sensitivity analysis and explore the dynamic characteristics of the pump unit. The dynamic responses of the system parameter (rotating speed, flow and head) are revealed by the start-up simulation. Research results provide theoretical guidance for the rational design and safe operation of tubular pump stations.