BENAOUICHA, Mustapha; ASTOLFI, Jacques Andre

doi:10.1016/j.jfluidstructs.2012.03.003

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

BENAOUICHA, Mustapha
Institut de Recherche de l'Ecole Navale [IRENAV]

ASTOLFI, Jacques Andre
Institut de Recherche de l'Ecole Navale [IRENAV]

Langue

Article de revue

Ce document a été publié dans

Journal of Fluids and Structures. 2012-05, vol. 31, p. 30-48

ELSEVIER

Résumé en anglais

The paper addresses a theoretical study of the added mass effect in cavitating flow.The cavitation is considered to induce a strong time–space variation of the fluid density at the interface between an inviscid fluid and a three-degree-of-freedom rigid section. The coupled problem is then simplified to a Laplace equation written for the pressure with aboundary condition at the fluid–structure interface depending on the acceleration, the velocity of the structure and on the rate of change of flow density. It is shown that contrary to the homogeneous flow, the added mass operator is not symmetrical and depends on the flow through fluid density variation. The added mass coefficients decrease as the cavitation increases which should induce an increase of the natural structural frequencies. The model shows also an added damping operator related to the rate of change of flow density. Added damping coefficients are found to be positive ornegative according to the rate of change of the fluid density, indicating the possibility of instability development between flexible structures and unsteady cavitating flows.< Réduire

Mots clés en anglais

Fluid–structure interaction

Cavitation induced vibrations

Added mass

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Analysis of added mass in cavitating flow

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Origine

Unités de recherche