Large Eddy Simulation of Transitional Boundary Layer on Horizantal Axis Wind Turbine Blade

In boundary layer flow around rotating machines, a radial (or cross-flow) velocity exists due to Coriolis and centrifugal forces. This velocity component can be of great importance for laminar-turbulent transition. A series of direct numerical simulations (DNS) are performed to study the boundary la...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020, Vol.1618
Main Authors: Jing, Zhenrong, Ducoin, Antoine, Braud, Caroline
Format: Article
Language:English
Subjects:
Engineering Sciences
Environmental Engineering
Environmental Sciences
Reactive fluid environment
Online Access:Get full text
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Summary:In boundary layer flow around rotating machines, a radial (or cross-flow) velocity exists due to Coriolis and centrifugal forces. This velocity component can be of great importance for laminar-turbulent transition. A series of direct numerical simulations (DNS) are performed to study the boundary layer flow transition on a rotating Horizontal Axis Wind Turbine blade. To quantify the effect of blade rotation, results are compared with that from airfoil DNS, where the section is taken from 3D blades and does not rotate. It is shown that the rotation gives rise to a small radial velocity and slightly modifies the shape of unstable waves. However, the transition location and mechanism of 3D blade boundary layer flow resemble 2D flow for the investigated case.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1618/5/052042