da Silva Del Rio Vieira, Debora Gleice (2013)
Numerical simulation of aerodynamic plasma actuator effects.
Technische Universität Darmstadt
Ph.D. Thesis, Primary publication
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Item Type: | Ph.D. Thesis | ||||
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Type of entry: | Primary publication | ||||
Title: | Numerical simulation of aerodynamic plasma actuator effects | ||||
Language: | English | ||||
Referees: | Michael , Prof. Schäfer ; Cameron, Prof. Tropea | ||||
Date: | 15 September 2013 | ||||
Place of Publication: | Darmstadt | ||||
Date of oral examination: | 23 April 2013 | ||||
Abstract: | The present work used an in-house code (FASTEST) for solving the incompressible Navier-Stokes equations with Finite Volume Method applied to the flow over a flat plate influenced by plasma actuators. The actuators were modeled using experimental data (from PIV) for a precise evaluation of the plasma body force and its fluid mechanic effects. This method is proven and found to have a good accuracy suitable for a quantitative analysis of the proposed test cases. Tollmien-Schlichting waves were artificially excited upstream the actuators position. The waves develop downstream of the excitation point and are amplified in certain frequency modes. The use of plasma actuators can attenuate or cancel the Tollmien-Schlichting waves. This process can be used for turbulence delay and reduction of drag coefficients in aircraft wings. Several modes of operation of the plasma actuators were tested in different arrangements and power supply. For cycle operational mode of the plasma actuator, one sensor was used a few millimeters downstream the actuator and the setup parameters are optimized with the help of an optimization algorithm. Linear Stability Analysis was also performed with the data obtained from Direct Numerical Simulations to investigate the influence of the actuator in the flow stability proprieties. |
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Uncontrolled Keywords: | Plasma actuators, numerical simulations, Computer Fluid Dynamics | ||||
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URN: | urn:nbn:de:tuda-tuprints-36084 | ||||
Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering | ||||
Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Fluid Dynamics (fdy) 16 Department of Mechanical Engineering > Fluid Mechanics and Aerodynamics (SLA) |
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Date Deposited: | 17 Oct 2013 12:52 | ||||
Last Modified: | 09 Jul 2020 00:31 | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/3608 | ||||
PPN: | 332944042 | ||||
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