Transitional flow dynamics behind a micro-ramp

Conference paper (2018)

Authors

J. Casacuberta Puig Aerodynamics - Aerospace Engineering
K.J. Groot Aerodynamics - Aerospace Engineering
Q. Ye Wind Energy - Aerospace Engineering
S. Hickel Aerodynamics - Aerospace Engineering
Research Group
Aerodynamics (Aerospace Engineering) (TU Delft)
Copyright: © 2018 J. Casacuberta Puig, K.J. Groot, Q. Ye, S. Hickel
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Published Date

2018

Language

English

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Aerodynamics

Abstract

We computed the base, instantaneous and mean flow around a micro-ramp immersed in an incompressible boundary layer. Results of our Direct
Numerical Simulations (DNS) are compared with an independent stability analysis and experiments. We analyse flow structures and mechanisms that contribute to the micro-ramp functionality and find that transitional perturbations increase the near-wall momentum in the mean flow more efficiently than the primary vortices in the laminar base flow.