Imperial College London
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Dr Shahid Mughal

Faculty of Natural Sciences, Department of Mathematics

Lecturer in Applied Mathematics
 
 
 
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Contact

 

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

 
 
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Location

 

734Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Cooke:2021:10.1007/978-3-030-67902-6_62,
author = {Cooke, EE and Mughal, MS and Sherwin, S and Ashworth, R and Rolston, S},
doi = {10.1007/978-3-030-67902-6_62},
journal = {IUTAM Laminar-Turbulent Transition},
pages = {713--723},
title = {Destabilisation of stationary and travelling crossflow disturbances due to forward and backward facing steps over a swept wing},
url = {http://dx.doi.org/10.1007/978-3-030-67902-6_62},
volume = {38},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The destabilisation effects of forward and backward facing steps on cross-flow (CF) disturbances on an infinite swept wing is investigated. Stationary and travelling CF-wave instability modulations, as they convect over the abrupt surface features, are investigated computationally with step heights ranging from 18% to 53% of the boundary layer thickness at chordwise locations of 10% and 20%. An embedded mesh approach is used to compute boundary layer base flow profiles over the swept wing with the high order spectral / hp element solver, Nektar++. Linear Stability Theory (LST), Parabolised Stability Equations (PSE) and Linearised Harmonic Navier-Stokes (LHNS) models are used to investigate the development of the convecting CF disturbances. LST is used to understand the instability parameter space and map out neutral curves. PSE equations fail to correctly capture the effects of the steps due to the strong short scale variations introduced whereas, the LHNS provide a rapid and more physics correct technique to ascertain flow destabilisation effects.
AU  - Cooke,EE
AU  - Mughal,MS
AU  - Sherwin,S
AU  - Ashworth,R
AU  - Rolston,S
DO  - 10.1007/978-3-030-67902-6_62
EP  - 723
PY  - 2021///
SP  - 713
TI  - Destabilisation of stationary and travelling crossflow disturbances due to forward and backward facing steps over a swept wing
T2  - IUTAM Laminar-Turbulent Transition
UR  - http://dx.doi.org/10.1007/978-3-030-67902-6_62
UR  - http://hdl.handle.net/10044/1/88928
UR  - https://www.springer.com/gp/book/9783030679019
VL  - 38
ER  -
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