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A Thin Film Fluid Structure Interaction Model for the Study of Flexible Structure Dynamics in Centrifugal Pumps

Article dans une revue avec comité de lecture
Author
ALBADAWI, Abdulaleem
450379 University of Dublin
SPECKLIN, Mathieu
134975 Laboratoire de Dynamique des Fluides [DynFluid]
450379 University of Dublin
CONNOLLY, Robert
DELAURÉ, Yan
450379 University of Dublin

URI
http://hdl.handle.net/10985/18057
DOI
10.1115/1.4041759
Date
2018
Journal
Journal of Fluids Engineering

Abstract

This paper describes a fluid-structure interaction (FSI) model for the study of flexible cloth-like structures or the so-called rags in flows through centrifugal pumps. The structural model and its coupling to the flow solver are based on a Lagrangian formulation combining structural deformation and motion modeling coupled to a sharp interface immersed boundary model (IBM). The solution has been implemented in the open-source library OpenFOAM relying in particular on its PIMPLE segregated Navier–Stokes pressure–velocity coupling and its detached eddy simulation (DES) turbulence model. The FSI solver is assessed in terms of its capability to generate consistent deformations and transport of the immersed flexible structures. Two benchmark cases are covered and both involve experimental validation with three-dimensional (3D) structural deformations of the rag captured using a digital image correlation (DIC) technique. Simulations of a rag transported in a centrifugal pump confirm the suitability of the model to inform on the dynamic behavior of immersed structures under practical engineering conditions.

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