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Aeroelastic Analysis of a Morphing Wing for Airborne Wind Energy Applications

Hall, Johannes LU (2017) MVK920 20162
Department of Energy Sciences
Abstract
The aim of this thesis is to set up a high-fidelity fluid structure interaction (FSI) simulation environment to study the gust load alleviation capability of camber-morphing airborne wind energy (AWE) wings. The simulation environment will enable studying the transient flow phenomena around the wing when encountering wind gusts and gives the possibility of investigating dynamic instabilities. To meet this end, an investigation on gust wind simulations is conducted. The Forcing Momentum Source method is considered the most suitable approach to simulate a discrete gust and is implemented. It allows simulating a gust of any given shape, duration and magnitude. In order to set up the fluid environment for the FSI simulation an automatic mesh... (More)
The aim of this thesis is to set up a high-fidelity fluid structure interaction (FSI) simulation environment to study the gust load alleviation capability of camber-morphing airborne wind energy (AWE) wings. The simulation environment will enable studying the transient flow phenomena around the wing when encountering wind gusts and gives the possibility of investigating dynamic instabilities. To meet this end, an investigation on gust wind simulations is conducted. The Forcing Momentum Source method is considered the most suitable approach to simulate a discrete gust and is implemented. It allows simulating a gust of any given shape, duration and magnitude. In order to set up the fluid environment for the FSI simulation an automatic mesh generation is created using the software ICEM CFD. This generates a high quality hexahedral mesh for an arbitrary AWE wing with minimum user input. Furthermore, FSI simulations of a morphing AWE wing interacting with gust winds are carried out and different load alleviation strategies are investigated. The AWE wing investigated in this thesis did not show any instabilities at a freestream velocity of 100 m/s. Furthermore, the wing has the ability to alleviate loads induced by a sinusoidal shaped gust wind with a magnitude of 5 m/s and a duration of 0.5 seconds. The work of this thesis concludes that a high-fidelity FSI environment has been successfully set up. Within the environment potential load alleviation via morphing, gust interaction and dynamic instabilities can be investigated for a morphing AWE wing. (Less)
Popular Abstract
New research shows the potential use of of the technology shows many benefits, for example morphing wings for airborne wind en- the shape could be changed in order to be optimized ergy applications. The morphing tech- for any flight condition and it would get rid of the nology could potentially lead to a more effi- air pockets between main wing and wing flap which cient and compliant system.
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author
Hall, Johannes LU
supervisor
organization
course
MVK920 20162
year
type
H2 - Master's Degree (Two Years)
subject
keywords
airborne wind energy, fluid structure interaction, gust wind modelling
report number
ISRN LUTMDN/TMHP-17/5384-SE
ISSN
0282-1990
language
English
id
8907478
date added to LUP
2017-05-18 16:44:42
date last changed
2017-05-18 16:44:42
@misc{8907478,
  abstract     = {The aim of this thesis is to set up a high-fidelity fluid structure interaction (FSI) simulation environment to study the gust load alleviation capability of camber-morphing airborne wind energy (AWE) wings. The simulation environment will enable studying the transient flow phenomena around the wing when encountering wind gusts and gives the possibility of investigating dynamic instabilities. To meet this end, an investigation on gust wind simulations is conducted. The Forcing Momentum Source method is considered the most suitable approach to simulate a discrete gust and is implemented. It allows simulating a gust of any given shape, duration and magnitude. In order to set up the fluid environment for the FSI simulation an automatic mesh generation is created using the software ICEM CFD. This generates a high quality hexahedral mesh for an arbitrary AWE wing with minimum user input. Furthermore, FSI simulations of a morphing AWE wing interacting with gust winds are carried out and different load alleviation strategies are investigated. The AWE wing investigated in this thesis did not show any instabilities at a freestream velocity of 100 m/s. Furthermore, the wing has the ability to alleviate loads induced by a sinusoidal shaped gust wind with a magnitude of 5 m/s and a duration of 0.5 seconds. The work of this thesis concludes that a high-fidelity FSI environment has been successfully set up. Within the environment potential load alleviation via morphing, gust interaction and dynamic instabilities can be investigated for a morphing AWE wing.},
  author       = {Hall, Johannes},
  issn         = {0282-1990},
  keyword      = {airborne wind energy,fluid structure interaction,gust wind modelling},
  language     = {eng},
  note         = {Student Paper},
  title        = {Aeroelastic Analysis of a Morphing Wing for Airborne Wind Energy Applications},
  year         = {2017},
}