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Harvard
Kallin, D. och Nordenskjöld, K. (2017) Fluid-Structure Interaction Analysis of a Centrifugal Fan. Göteborg : Chalmers University of Technology (Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, nr: 2017:54).
BibTeX
@mastersthesis{
Kallin2017,
author={Kallin, David and Nordenskjöld, Knut},
title={Fluid-Structure Interaction Analysis of a Centrifugal Fan},
abstract={Centrifugal fans are used within many applications where great ability to create
pressure increase is of importance. Rotating machinery such as industrial fans are
often expected to withstand a very large number of load cycles with little or no maintenance.
Consequently, accurate estimation of the fatigue limit is of interest when
designing a centrifugal fan. It is known that pressure fluctuations arise on the fan
leading to time varying loads. It is proposed that these pressure fluctuations have
an impact on the fatigue limit of the centrifugal fan studied in this work. This study
investigates the capabilities of estimating the fatigue limit based on fluid-structure
interaction with commercial software.
In this study, a method of simulating fluid-structure interaction has been applied on
a centrifugal fan with the commercial software platform ANSYS Workbench. The
method involves simulation of the unsteady turbulent flow through the fan as well
as, static and transient, structural analysis. Fluid analysis has been performed on
the deformed shape on the fan caused by centrifugal force. Pressure fluctuations on
the fan surface are analysed and applied to the fan in a transient structural simulation
to obtain the stress variations in critical locations. A crude estimate of the
fatigue limit has been done based on the obtained stress field.
Blade pressure fluctuations are captured in simulations and interesting correlations
between the blade surface fluctuations and the surrounding flow structures are found.
Results shows a weak interaction between structural and fluid field suggesting that
a one-way coupled approach is adequate when performing fluid-structure interaction
simulations of the studied fan. Aerodynamic loads are found to have a negligible
impact on the estimated fatigue life. The main weakness of this work is the lack of
verification of the numerical simulations.},
publisher={Institutionen för tillämpad mekanik, Strömningslära, Chalmers tekniska högskola},
place={Göteborg},
year={2017},
series={Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2017:54},
keywords={Fluid-structure interaction (FSI), Centrifugal fan, Finite element analysis (FEA), Computational Fluid Dynamics (CFD), Fatigue },
}
RefWorks
RT Generic
SR Electronic
ID 250734
A1 Kallin, David
A1 Nordenskjöld, Knut
T1 Fluid-Structure Interaction Analysis of a Centrifugal Fan
YR 2017
AB Centrifugal fans are used within many applications where great ability to create
pressure increase is of importance. Rotating machinery such as industrial fans are
often expected to withstand a very large number of load cycles with little or no maintenance.
Consequently, accurate estimation of the fatigue limit is of interest when
designing a centrifugal fan. It is known that pressure fluctuations arise on the fan
leading to time varying loads. It is proposed that these pressure fluctuations have
an impact on the fatigue limit of the centrifugal fan studied in this work. This study
investigates the capabilities of estimating the fatigue limit based on fluid-structure
interaction with commercial software.
In this study, a method of simulating fluid-structure interaction has been applied on
a centrifugal fan with the commercial software platform ANSYS Workbench. The
method involves simulation of the unsteady turbulent flow through the fan as well
as, static and transient, structural analysis. Fluid analysis has been performed on
the deformed shape on the fan caused by centrifugal force. Pressure fluctuations on
the fan surface are analysed and applied to the fan in a transient structural simulation
to obtain the stress variations in critical locations. A crude estimate of the
fatigue limit has been done based on the obtained stress field.
Blade pressure fluctuations are captured in simulations and interesting correlations
between the blade surface fluctuations and the surrounding flow structures are found.
Results shows a weak interaction between structural and fluid field suggesting that
a one-way coupled approach is adequate when performing fluid-structure interaction
simulations of the studied fan. Aerodynamic loads are found to have a negligible
impact on the estimated fatigue life. The main weakness of this work is the lack of
verification of the numerical simulations.
PB Institutionen för tillämpad mekanik, Strömningslära, Chalmers tekniska högskola,PB Institutionen för tillämpad mekanik, Strömningslära, Chalmers tekniska högskola,
T3 Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2017:54
LA eng
LK http://publications.lib.chalmers.se/records/fulltext/250734/250734.pdf
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