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Updated: Dec 29, 2025

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe
Published on: December 3, 2016
Recurrence analysis of surface pressure characteristics over symmetrical aerofoil
S Arunvinthan1, R Gopal2, V K Chandrasekar2
1Turbulence & Flow Control Laboratory, School of Mechanical Engineering, SASTRA Deemed University, Thanjavur, Tamilnadu 613 401, India.
Abstract:
We study the surface pressure data exhibiting the underlying dynamical behavior of the flow transition over the upper surface of the aerofoil by using recurrence quantification analysis (RQA). In this study, NACA 2415 aerofoil subjected to a turbulent inflow of TI=8.46% at various angles of attack ranging from α=0° to 20° with an increment of 5° corresponding to Re=2.0×105 is considered. We show that the values of recurrence quantification measures effectively distinguish the underlying dynamics of time series surface pressure data at each port, which proves RQA as an effective tool in accurately predicting the flow transitions.
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