Imperial College London
Portrait Picture

Dr Shahid Mughal

Faculty of Natural Sciences, Department of Mathematics

Lecturer in Applied Mathematics
 
 
 
//

Contact

 

+44 (0)20 7594 2648s.mughal Website

 
 
//

Location

 

734Huxley BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Kang:2020:10.1177/0954410019842033,
author = {Kang, KL and Ashworth, R and Mughal, S},
doi = {10.1177/0954410019842033},
journal = {Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering},
pages = {68--78},
title = {Stabilization of crossflow instability with plasma actuators: Linearized Navier–Stokes simulations},
url = {http://dx.doi.org/10.1177/0954410019842033},
volume = {234},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:p> 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 parabolized stability equation (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. </jats:p>
AU  - Kang,KL
AU  - Ashworth,R
AU  - Mughal,S
DO  - 10.1177/0954410019842033
EP  - 78
PY  - 2020///
SN  - 0954-4100
SP  - 68
TI  - Stabilization of crossflow instability with plasma actuators: Linearized Navier–Stokes simulations
T2  - Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
UR  - http://dx.doi.org/10.1177/0954410019842033
UR  - http://hdl.handle.net/10044/1/69213
VL  - 234
ER  -
Download