A rational method for determining intermittency in the transitional boundary layer
Veerasamy, D. & Atkin, C.J. 
ORCID: 0000-0003-2529-1978 (2020).
A rational method for determining intermittency in the transitional boundary layer.
Experiments in Fluids, 61(1),
article number 11.
doi: 10.1007/s00348-019-2856-5
Abstract
A new rational procedure is proposed for determining the intermittency in the streamwise direction. One of the key parameters for the intermittency determination is the selection of a threshold value, which often involves a certain level of subjectivity. Here, a reliable way of choosing the threshold value in a more objective manner is proposed. The proposed approach involves a single threshold value, equal to the magnitude of the maximum laminar perturbation in the transitional flow. The results obtained are validated with the widely used dual-slope method. In this paper, the measurements are carried out on an experimental arrangement, involving the interaction of an upstream aerofoil wake with a downstream flat plate boundary layer. As a by-product of the study, a scaling parameter has been identified which captures the length of the transition zone as the proximity of the aerofoil in the wall-normal direction is varied.
| Publication Type: | Article |
|---|---|
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics |
| Departments: | School of Science & Technology > Engineering |
| SWORD Depositor: |
Available under License Creative Commons: Attribution International Public License 4.0.
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