BiGlobal and point vortex methods for the instability analysis of wakes
| Autor: | Miquel Roura, Vassilios Theofilis, Pedro Paredes Gonzalez, Juan Angel Tendero Ventanas, Rama Govindarajan |
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| Předmět: |
Physics
020301 aerospace & aeronautics 02 engineering and technology Mechanics 01 natural sciences Stability (probability) Instability 010305 fluids & plasmas Vortex Physics::Fluid Dynamics Modal 0203 mechanical engineering Flow (mathematics) Inviscid flow Condensed Matter::Superconductivity 0103 physical sciences Point (geometry) Mecánica |
| Zdroj: | Scopus-Elsevier 31st AIAA Applied Aerodynamics Conference : proceedings | 31st AIAA Applied Aerodynamics Conference | 24/06/2013-27/06/2013 | San Diego, CA, USA Archivo Digital UPM instname |
| Popis: | To better understand destruction mechanisms of wake-vortices behind aircraft, the point vortex method for stability (inviscid) used by Crow is here compared with viscous modal global stability analysis of the linearized Navier-Stokes equations acting on a two-dimensional basic flow, i.e. BiGlobal stability analysis. The fact that the BiGlobal method is viscous, and uses a flnite área vortex model, gives rise to results somewhat different from the point vortex model. It adds more parameters to the problem, but is more realistic. |
| Databáze: | OpenAIRE |
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