Cavitation induced damage: FEM inverse modeling of the flow aggressiveness

Samir Chandra Roy (1) , Marc C. Fivel (1) , Jean-Pierre Franc (2) , Christian Pellone (2)

1 SIMaP - Science et Ingénierie des Matériaux et Procédés
2 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]

An inverse method is proposed to identify the pressure fields that could generate individual pits as observed experimentally in eroded samples made of three different materials. Assuming each pit was generated by a single bubble collapse, the pressure load is defined by two parameters, the peak pressure and its radial extent. An inverse method based on finite element modeling is proposed. The method gives access to the load distributions relevant to the aggressiveness of the cavitation test which is found to be consistent with the three materials responses.

Domaines: Mécanique des fluides [physics.class-ph]

Samir Chandra Roy, Marc C. Fivel, Jean-Pierre Franc, Christian Pellone. Cavitation induced damage: FEM inverse modeling of the flow aggressiveness. 11th International Conference on Flow Dynamics, Oct 2014, Sendai, Japan. ⟨hal-01134458⟩