Stabilization of crossflow instability with plasma actuators: linearized navier stokes simulations
File(s)
Accepted version
Author(s)
Kang, Kean Lee
Ashworth, Richard
Mughal, Mohammed Shahid
Type
Journal Article
Abstract
This paper describes work carried out within the European Union (EU)-Russia Buterfli project to look at the control of transition-causing “target” stationary cross flow vortices, by the use of distributed plasma actuation to generate sub-dominant “killer” modes. The objective is to use the “killer” modes to control the “target” modes through a non-linear stabilizing mechanism. The numerical modelling and results are compared to experimental studies performed at the TsAGI T124 tunnel for a swept plate subject to a favorable pressure gradient flow. A mathematical model for the actuator developed at TsAGI was implemented in a linearized Navier Stokes (LNS) solver and used to model and hence predict “killer” mode amplitudes at a measurement plane in the experiment. The LNS analysis shows good agreement with experiment, and the results are used as input for non-linear PSE analysis to predict the effect of these modes on crossflow transition. Whilst the numerical model indicates a delay in transition, experimental results indicated an advance in transition rather than delay. This was determined to be due to actuator induced unsteadiness arising in the experiment, resulting in the generation of travelling crossflow disturbances which tended to obscure and thus dominate the plasma stabilized stationary disturbances.
Date Issued
2020-01-01
Date Acceptance
2019-02-24
Citation
Proceedings of the Institution of Mechanical Engineers Part G: Journal of Aerospace Engineering, 2020, 234 (1), pp.68-78
ISSN
0954-4100
Publisher
SAGE Publications
Start Page
68
End Page
78
Journal / Book Title
Proceedings of the Institution of Mechanical Engineers Part G: Journal of Aerospace Engineering
Volume
234
Issue
1
Copyright Statement
© 2019 IMechE. Article reuse guidelines: sagepub.com/journals-permissions
Identifier
https://doi.org/10.1177/0954410019842033
Subjects
Flow control, plasma actuator, laminar turbulent transition, crossflow instability, linearized Navier Stokes, parabolized stability equations, PSE
Notes
Accepted 24/02/2019
Publication Status
Published
Date Publish Online
2019-04-15