Fluid-structure interaction analysis of flexible turbomachinery

Robert Lee Campbell, E. G. Paterson

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

A method for the performance computation of an expandable-impeller pump is developed and validated. Large deformations of the highly flexible pump impellers result in a strong coupling between the impeller and fluid flow. The computational method therefore requires simultaneous solution of fluid flow and structural response. OpenFOAM provides the flow and mesh motion solvers and is coupled to an author-developed structural solver in a tightly coupled approach using a fixed-point iteration. The structural deformations are time-dependent because the material exhibits stress relaxation. The time-constant of the relaxation, however, is very large, thereby allowing quasi-steady simulations. A water-tunnel test of a viscoelastic hydrofoil is employed to validate the solver. Simulations of the test problem show good agreement with the experimental results and demonstrate the need for several sub-iterations of the solver even for the quasi-steady simulations.

Original languageEnglish (US)
Pages (from-to)1376-1391
Number of pages16
JournalJournal of Fluids and Structures
Volume27
Issue number8
DOIs
StatePublished - Nov 1 2011

Fingerprint

Turbomachinery
Fluid structure interaction
Flow of fluids
Pumps
Hydrofoils
Impellers
Stress relaxation
Computational methods
Tunnels
Water

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

@article{91df20339d00429c801290f0a854bbfe,
title = "Fluid-structure interaction analysis of flexible turbomachinery",
abstract = "A method for the performance computation of an expandable-impeller pump is developed and validated. Large deformations of the highly flexible pump impellers result in a strong coupling between the impeller and fluid flow. The computational method therefore requires simultaneous solution of fluid flow and structural response. OpenFOAM provides the flow and mesh motion solvers and is coupled to an author-developed structural solver in a tightly coupled approach using a fixed-point iteration. The structural deformations are time-dependent because the material exhibits stress relaxation. The time-constant of the relaxation, however, is very large, thereby allowing quasi-steady simulations. A water-tunnel test of a viscoelastic hydrofoil is employed to validate the solver. Simulations of the test problem show good agreement with the experimental results and demonstrate the need for several sub-iterations of the solver even for the quasi-steady simulations.",
author = "Campbell, {Robert Lee} and Paterson, {E. G.}",
year = "2011",
month = "11",
day = "1",
doi = "10.1016/j.jfluidstructs.2011.08.010",
language = "English (US)",
volume = "27",
pages = "1376--1391",
journal = "Journal of Fluids and Structures",
issn = "0889-9746",
publisher = "Academic Press Inc.",
number = "8",

}

Fluid-structure interaction analysis of flexible turbomachinery. / Campbell, Robert Lee; Paterson, E. G.

In: Journal of Fluids and Structures, Vol. 27, No. 8, 01.11.2011, p. 1376-1391.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fluid-structure interaction analysis of flexible turbomachinery

AU - Campbell, Robert Lee

AU - Paterson, E. G.

PY - 2011/11/1

Y1 - 2011/11/1

N2 - A method for the performance computation of an expandable-impeller pump is developed and validated. Large deformations of the highly flexible pump impellers result in a strong coupling between the impeller and fluid flow. The computational method therefore requires simultaneous solution of fluid flow and structural response. OpenFOAM provides the flow and mesh motion solvers and is coupled to an author-developed structural solver in a tightly coupled approach using a fixed-point iteration. The structural deformations are time-dependent because the material exhibits stress relaxation. The time-constant of the relaxation, however, is very large, thereby allowing quasi-steady simulations. A water-tunnel test of a viscoelastic hydrofoil is employed to validate the solver. Simulations of the test problem show good agreement with the experimental results and demonstrate the need for several sub-iterations of the solver even for the quasi-steady simulations.

AB - A method for the performance computation of an expandable-impeller pump is developed and validated. Large deformations of the highly flexible pump impellers result in a strong coupling between the impeller and fluid flow. The computational method therefore requires simultaneous solution of fluid flow and structural response. OpenFOAM provides the flow and mesh motion solvers and is coupled to an author-developed structural solver in a tightly coupled approach using a fixed-point iteration. The structural deformations are time-dependent because the material exhibits stress relaxation. The time-constant of the relaxation, however, is very large, thereby allowing quasi-steady simulations. A water-tunnel test of a viscoelastic hydrofoil is employed to validate the solver. Simulations of the test problem show good agreement with the experimental results and demonstrate the need for several sub-iterations of the solver even for the quasi-steady simulations.

UR - http://www.scopus.com/inward/record.url?scp=80053050522&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053050522&partnerID=8YFLogxK

U2 - 10.1016/j.jfluidstructs.2011.08.010

DO - 10.1016/j.jfluidstructs.2011.08.010

M3 - Article

AN - SCOPUS:80053050522

VL - 27

SP - 1376

EP - 1391

JO - Journal of Fluids and Structures

JF - Journal of Fluids and Structures

SN - 0889-9746

IS - 8

ER -