Discrepancy in the Aerodynamic Property and Flowfield of a Symmetric Airfoil Produced by the Stationary and Moving Ground Effect
| Autor: | Tim Lee, Vincent Tremblay-Dionne |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Airfoil Mechanical Engineering 02 engineering and technology Aerodynamics Mechanics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Ground effect (aerodynamics) 020303 mechanical engineering & transports 0203 mechanical engineering 0103 physical sciences Boundary value problem |
| Zdroj: | Journal of Fluids Engineering. 143 |
| ISSN: | 1528-901X 0098-2202 |
| DOI: | 10.1115/1.4048290 |
| Popis: | The discrepancy in the aerodynamic property and flowfield of a symmetric airfoil produced by the stationary and moving ground effect was quantified through surface pressure and particle-image-velocimetry measurements. The results show that the stationary ground effect produced a higher lift than the moving ground due to the flow passage restriction caused by the longitudinal boundary layer developed on its ground surface. In close ground proximity, the formation of a ground vortex beneath the airfoil's leading-edge region speeded up the flow, leading to a lower lift than its moving-ground counterpart. For the moving ground, the ground vortex was absent. In close ground proximity, the moving ground effect generated a larger wake and drag than the stationary ground effect. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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