Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow condition
In order to study the aerodynamic performance of a semi-flexible membrane blade, fluid–structure interaction simulations have been performed for a non-rotating blade under steady inflow condition. The studied concept blade has a length of about 5 m. It consists of a rigid mast at the leading edge...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-11-01
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| Series: | Wind Energy Science |
| Online Access: | https://www.wind-energ-sci.net/1/255/2016/wes-1-255-2016.pdf |
| _version_ | 1811212491852611584 |
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| author | M. Saeedi K.-U. Bletzinger R. Wüchner |
| author_facet | M. Saeedi K.-U. Bletzinger R. Wüchner |
| author_sort | M. Saeedi |
| collection | DOAJ |
| description | In order to study the aerodynamic performance of a semi-flexible membrane
blade, fluid–structure interaction simulations have been performed for a
non-rotating blade under steady inflow condition. The studied concept blade
has a length of about 5 m. It consists of a rigid mast at the leading edge,
ribs along the blade, tensioned edge cables at the trailing edge and
membranes forming the upper and lower surface of the blade. Equilibrium shape of
membrane structures in the absence of external loading depends on the location of the supports and the prestresses in the membranes and the supporting edge
cables. Form-finding analysis is used to find the equilibrium shape. The
exact form of a membrane structure for the service conditions depends on the
internal forces and also on the external loads, which in turn depend on the
actual shape. As a result, two-way coupled fluid–structure interaction (FSI)
analysis is necessary to study this class of structures. The fluid problem
has been modelled using two different approaches, which are the vortex panel
method and the numerical solution of the Navier–Stokes equations. Nonlinear
analysis of the structural problem is performed using the finite-element
method. The goal of the current study is twofold: first, to make a comparison
between the converged FSI results obtained from the two different methods to
solve the fluid problem. This investigation is a prerequisite for the
development of an efficient and accurate multi-fidelity simulation concept
for different design stages of the flexible blade. The second goal is to
study the aerodynamic performance of the membrane blade in terms of lift and
drag coefficient as well as lift-to-drag ratio and to compare them with those
of the equivalent conventional rigid blade. The blade configuration from the
NASA-Ames Phase VI rotor is taken as the baseline rigid-blade configuration.
The studied membrane blade shows a higher lift curve slope and higher lift-to-drag ratio compared with the rigid blade. |
| first_indexed | 2024-04-12T05:30:00Z |
| format | Article |
| id | doaj.art-4ac877769bfd44fe9ac1b56b15674b6d |
| institution | Directory Open Access Journal |
| issn | 2366-7443 2366-7451 |
| language | English |
| last_indexed | 2024-04-12T05:30:00Z |
| publishDate | 2016-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Wind Energy Science |
| spelling | doaj.art-4ac877769bfd44fe9ac1b56b15674b6d2022-12-22T03:46:07ZengCopernicus PublicationsWind Energy Science2366-74432366-74512016-11-01125526910.5194/wes-1-255-2016Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow conditionM. Saeedi0K.-U. Bletzinger1R. Wüchner2Lehrstuhl für Statik, Technical University of Munich, 80333 Munich, GermanyLehrstuhl für Statik, Technical University of Munich, 80333 Munich, GermanyLehrstuhl für Statik, Technical University of Munich, 80333 Munich, GermanyIn order to study the aerodynamic performance of a semi-flexible membrane blade, fluid–structure interaction simulations have been performed for a non-rotating blade under steady inflow condition. The studied concept blade has a length of about 5 m. It consists of a rigid mast at the leading edge, ribs along the blade, tensioned edge cables at the trailing edge and membranes forming the upper and lower surface of the blade. Equilibrium shape of membrane structures in the absence of external loading depends on the location of the supports and the prestresses in the membranes and the supporting edge cables. Form-finding analysis is used to find the equilibrium shape. The exact form of a membrane structure for the service conditions depends on the internal forces and also on the external loads, which in turn depend on the actual shape. As a result, two-way coupled fluid–structure interaction (FSI) analysis is necessary to study this class of structures. The fluid problem has been modelled using two different approaches, which are the vortex panel method and the numerical solution of the Navier–Stokes equations. Nonlinear analysis of the structural problem is performed using the finite-element method. The goal of the current study is twofold: first, to make a comparison between the converged FSI results obtained from the two different methods to solve the fluid problem. This investigation is a prerequisite for the development of an efficient and accurate multi-fidelity simulation concept for different design stages of the flexible blade. The second goal is to study the aerodynamic performance of the membrane blade in terms of lift and drag coefficient as well as lift-to-drag ratio and to compare them with those of the equivalent conventional rigid blade. The blade configuration from the NASA-Ames Phase VI rotor is taken as the baseline rigid-blade configuration. The studied membrane blade shows a higher lift curve slope and higher lift-to-drag ratio compared with the rigid blade.https://www.wind-energ-sci.net/1/255/2016/wes-1-255-2016.pdf |
| spellingShingle | M. Saeedi K.-U. Bletzinger R. Wüchner Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow condition Wind Energy Science |
| title | Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow condition |
| title_full | Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow condition |
| title_fullStr | Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow condition |
| title_full_unstemmed | Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow condition |
| title_short | Multi-fidelity fluid–structure interaction analysis of a membrane blade concept in non-rotating, uniform flow condition |
| title_sort | multi fidelity fluid structure interaction analysis of a membrane blade concept in non rotating uniform flow condition |
| url | https://www.wind-energ-sci.net/1/255/2016/wes-1-255-2016.pdf |
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