Fluid–structure Simulation Of A Viscoelastic
Hydrofoil Subjected To Quasi-steady Flow
Author(s)
R. L. Campbell, E. G. Paterson, M. C. Reese & S. A. Hambric
Abstract
Fluid–structure interaction simulations are performed for a flexible hydrofoil
subjected to quasi-steady flow conditions. The hydrofoil is fabricated from a
polymeric material that exhibits viscoelastic effects, causing the hydrofoil to
change shape while subjected to the fluid loads. The time-dependent deformations
and loads will be compared in the future to empirical results from upcoming water
tunnel tests. The fluid–structure interaction simulations are performed using a
tightly coupled partitioned approach, with OpenFOAM as the flow solver and a
finite element solver for the structural response. The codes are coupled using a
fixed-point iteration with relaxation. The flow is modeled as laminar and quasisteady.
Simulations indicate the hydrofoil angle of attack (AOA) changes from
zero to a negative value as the material relaxes. The approach used here is being
developed for application to a blood pump that has a performance closely tied to
blade deformation through the impeller tip clearance.
Keywords: fluid–structure interaction, viscoelasticity, hydrofoil, OpenFOAM.
1 Introduction
The area of fluid–structure interaction (FSI) modeling has been very active in
recent years, as evidenced by the numerous papers in the literature (see, for
example, the review by Tezduyar and Sathe [1]). The dramatic advances in
affordable computational resources coupled with improved modeling capability
for both fluid and solid structures over the past two decades have made feasible
coupled fluid/solid simulations for real-world engineering applications. While
FSI simulations have been an area of research since the late 1970s (see Felippa
et al. [2]), there still exist several challenges before these simulations will be
Keywords
fluid–structure interaction, viscoelasticity, hydrofoil, OpenFOAM
Related Book
Other papers in this volume
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