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Abohelwa, Mohamed Saad Elsayed (2020) Numerical study on the aeroelastic stability of circular cylinders. Master's, Technische Universität Braunschweig.
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Abstract
In this master thesis, the aeroelastic stability of circular cylinders is investigated. The study is based on 2D CFD simulations carried out with DLR TAU-Code. Circular cylinders immersed into a steady flow are exposed to fluid forces and aerodynamic instabilities such as vortex-induced vibrations (VIV) and galloping that cause the cylinder to oscillate. The aerodynamic instabilities are induced primarily because of flow separation around the body and the formation of the Von Karman vortex street. This thesis aims to study the efficacy of using spoilers or splitter plates with different lengths and positioned in different positions around the cylinder on suppressing the vortex formation and attenuating the cylinder's oscillation.
| Item URL in elib: | https://elib.dlr.de/140335/ | ||||||||
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| Document Type: | Thesis (Master's) | ||||||||
| Additional Information: | Supervisor: Nitzsche, Jens (https://orcid.org/0000-0002-2742-7368) | ||||||||
| Title: | Numerical study on the aeroelastic stability of circular cylinders | ||||||||
| Authors: |
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| Date: | 16 December 2020 | ||||||||
| Refereed publication: | No | ||||||||
| Open Access: | No | ||||||||
| Status: | Published | ||||||||
| Keywords: | flutter, limit cycle oscillations, bluff body, spoiler, cylinder, vortex street, galloping, vortex-induced vibrations | ||||||||
| Institution: | Technische Universität Braunschweig | ||||||||
| HGF - Research field: | Energy | ||||||||
| HGF - Program: | Renewable Energies | ||||||||
| HGF - Program Themes: | Wind Energy | ||||||||
| DLR - Research area: | Energy | ||||||||
| DLR - Program: | E SW - Solar and Wind Energy | ||||||||
| DLR - Research theme (Project): | E - Wind Energy (old) | ||||||||
| Location: | Göttingen | ||||||||
| Institutes and Institutions: | Institute of Aeroelasticity > Aeroelastic Simulation | ||||||||
| Deposited By: | Nitzsche, Jens | ||||||||
| Deposited On: | 12 Jan 2021 17:12 | ||||||||
| Last Modified: | 29 Feb 2024 09:04 |
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