Modelling of a radial pump fast startup with the CATHARE-3 Code and analyse of the loop response

L. Matteo (1, 2) , R. Moral (1) , A. Dazin (2) , N. Tauveron (1)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 LMFL - Laboratoire de Mécanique des Fluides de Lille – Kampé de Fériet - UMR 9014

The french alternative energies and atomic energy commission (CEA) is currently doingresearch in the pump modelling field. A predictive transient, two-phase flow rotodynamicpump model has been developed in the CATHARE-3 code. Flow inside parts of the pump(suction, impeller, diffuser, volute) is computed according to a one-dimensional discretization.A mean flow path has to be defined for such a modelling. Validation has startedduring years 2017-18 at the component scale by comparison to an existing experimentaldatabase. The ability of the model to predict head and torque as a function of time duringa 1-second pump fast start-up has been proved when imposing rotational speed and flowrate evolutions. The present study aims at extending the validation at the system scale awhole loop is modelled.

Keywords: one-dimensional; startup; Pump; Transient; Model; CATHARE

Domains: Physics [physics]; Nuclear Experiment [nucl-ex]; Physics [physics]; Nuclear Theory [nucl-th]

L. Matteo, R. Moral, A. Dazin, N. Tauveron. Modelling of a radial pump fast startup with the CATHARE-3 Code and analyse of the loop response. ETC13 - 13th European Conference on Turbomachinery Fluid dynamics and Thermodynamic, Apr 2019, Lausanne, Switzerland. ⟨cea-02338463⟩