Spanwise flow structures within a laminar separation bubble on an airfoil

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Abstract

The present study considers the development of a Laminar Separation Bubble on the suction side of a NACA0018 airfoil under natural and forced conditions. Deterministic forcing is applied by means of a two-dimensional plasma actuator installed on the airfoil surface. The spatiotemporal characteristics of the bubble are measured using time-resolved, two-component Particle Image Velocimetry in streamwise and spanwise planes. Analysis of the results shows that while the time-average bubble is strongly two-dimensional, the dominant coherent structures assume three dimensional organisation in the vicinity of laminarturbulent breakdown in both natural and forced conditions.

Original languageEnglish
Title of host publication10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017
PublisherTSFP
Number of pages6
Volume3
ISBN (Electronic)9780000000002
Publication statusPublished - 2017
Event10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017 - Chicago, United States
Duration: 6 Jul 20179 Jul 2017
Conference number: 10
http://tsfp10.org/

Conference

Conference10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017
Abbreviated titleTSFP 2017
CountryUnited States
CityChicago
Period6/07/179/07/17
Internet address

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    Michelis, T., Kotsonis, M., & Yarusevych, S. (2017). Spanwise flow structures within a laminar separation bubble on an airfoil. In 10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017 (Vol. 3). [8B-3] TSFP.