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Calculation of shear layer length scale for airfoil in deep stall |
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July 20, 2021, 09:33 |
Calculation of shear layer length scale for airfoil in deep stall
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Member
Ravi
Join Date: May 2017
Posts: 31
Rep Power: 8 |
Hello all,
I am currently running a DDES, 2nd order unsteady simulation for an airfoil in deep stall (angle of attack (AoA) = 60^{\circ}). The time discretization was performed by using a dual time-stepping scheme. My Reynolds number is of the order of 10^{5}, and my chord length is unity. In order to verify the results obtained from the PSD spectrum of the lift coefficient C_{l} with experimental data, I would like to calculate the K-H instability frequency for this regime. I recently found a paper in which I found an empirical relationship for the same, and they had mentioned to use the shear layer thickness for the same. Does anyone know of a relationship between the shear layer thickness and airfoil properties, such as chord length and the AoA, or any other formulation? Hoping to hear from you all soon. |
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