What is it about?
This works shows a simulation of an airfoil performing a plunging motion. During the motion, a physical phenomenon called dynamic stall occurs, which increases lift but also drag. Flow control is then implemented with the objective of decreasing drag without losing a considerable amount of lift.
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Photo by sergey Svechnikov on Unsplash
Why is it important?
The physical phenomenon of dynamic stall is present in many engineering applications like helicopters, wind turbines, super maneuverable aircrafts and many others. Trying to mitigate its effect is crucial to develop more efficient and reliable technologies. This work shows how a simple type of flow actuation can reduce drag caused by the dynamic stall vortex drastically while also maintaining lift for a flow in a low Reynolds (60,000).
Perspectives
This publication aims to clarify the effects of the dynamic stall vortex and how to mitigate them in a low Reynolds number flow. Hopefully, it will be useful to scientists and engineers who are dealing with a problem that involves dynamic stall and need to understand and address it in some way.
Brener Ramos
University of Campinas
Read the Original
This page is a summary of: High-Fidelity Simulation and Flow Control of a Plunging Airfoil under Deep Dynamic Stall, January 2019, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2019-1395.
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