Model based analysis of the time scales associated to pump start-ups

Antoine Dazin (1) , Guy Caignaert (1) , Geneviève Dauphin-Tanguy (2)

1 LMFL - Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet
2 CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189

The paper refers to a non dimensional analysis of the behaviour of a hydraulic system during pump faststart-ups. The system is composed of a radial flow pump and its suction and delivery pipes. It is modelled using the bond graph methodology. The prediction of the model is validated by comparison to experimental results. An analysis of the time evolution of the terms acting on the total pump pressure is proposed. It allows for a decomposition of the start-up into three consecutive periods. The time scales associated with these periods are estimated. The effects of parameters (angular acceleration, final rotation speed, pipe length and resistance) affecting the start-up rapidity are then explored.

Mots clés: bond-graph; pump start-up; time scales; transient

Domaines: Mécanique des fluides [physics.class-ph]; Sciences de l'ingénieur [physics]

Antoine Dazin, Guy Caignaert, Geneviève Dauphin-Tanguy. Model based analysis of the time scales associated to pump start-ups. Nuclear Engineering and Design, 2015, 293, pp.218-227. ⟨10.1016/j.nucengdes.2015.07.045⟩. ⟨hal-02142374⟩