Modeling of cavitation in hydraulic turbomachinery

Ridha Zgolli (1) , Marwa Ennouri (1) , Hatem Kanfoudi (1)

1 University of Sciences, Tunis

This paper aligns itself to many other research developments concerning hydrodynamic cavitation. It attempts to provide an increasingly reliable tool for the analysis and control of particular flows in a hydraulic turbomachinery. This paper consists of two parts. The first one deal with the basic investigations of cavitating flow around an inclined two-dimensional profile using a recently developed and validate cavitation model. The second part describes the application of this model to predict the head drop behaviour of a centrifugal pump. A 3D numerical model is proposed to simulate steady and unsteady internal flow into a centrifugal pump with both, non-cavitating and cavitating operating conditions.We present the numerical approach and results, showing the ability to analyze the unsteady behavior of the internal flow related to the rotation of the wheel induced by the passage of the blades front the volute beak.

Mots clés: turbomachinery; cavitation; Computaional Fluid Dynamics

Domaines: Mécanique [physics]

Ridha Zgolli, Marwa Ennouri, Hatem Kanfoudi. Modeling of cavitation in hydraulic turbomachinery. 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Apr 2016, Honolulu, United States. ⟨hal-01894392⟩