Direct numerical simulation of transitional boundary layers on a horizontal axis wind turbine blade
| Autor: | Zhenrong Jing, Caroline Braud, Antoine Ducoin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Airfoil History Turbine blade 020209 energy Flow (psychology) Direct numerical simulation Boundary (topology) 02 engineering and technology Mechanics Rotation 01 natural sciences 010305 fluids & plasmas Computer Science Applications Education law.invention Physics::Fluid Dynamics Radial velocity Boundary layer law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering |
| Zdroj: | Journal of Physics: Conference Series. 1618:052042 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/1618/5/052042 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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