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{Appel:2021:10.1007/978-3-030-67902-6_30,
author = {Appel, T and Cooke, E and Mughal, MS and Ashworth, R},
doi = {10.1007/978-3-030-67902-6_30},
journal = {IUTAM Laminar-Turbulent Transition},
pages = {1--1},
title = {BiGlobal stability analysis of swept-wing boundary layers with forward and backward facing steps},
url = {http://dx.doi.org/10.1007/978-3-030-67902-6_30},
volume = {38},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The temporal stability characteristics of generic, swept-wing boundary-layer flows of practical engineering significance with a smooth, isolated backward facing step or a forward-facing step are investigated. A streamwise BiGlobal analysis is undertaken on previously computed steady-state, Mach 0.3 Navier-Stokes solutions that had been obtained for four spanwise invariant step heights and at two chordwise locations on an infinite swept-wing geometry. Temporal instability is detected for heights exceeding 25% of the undisturbed boundary-layer thickness, or one unit of the undisturbed displacement thickness at the step chordwise location. Forward-facing steps with the greatest height are not found to be temporally unstable in contrast to backward-facing steps. Unstable modes feature localised regions of large streamwise and spanwise perturbation velocity magnitude near the lower corner of the backward-facing step or just downstream of the forward-facing step. Wave-like modes are found to arise from the deepest backward-facing step.
AU  - Appel,T
AU  - Cooke,E
AU  - Mughal,MS
AU  - Ashworth,R
DO  - 10.1007/978-3-030-67902-6_30
EP  - 1
PY  - 2021///
SN  - 1875-3507
SP  - 1
TI  - BiGlobal stability analysis of swept-wing boundary layers with forward and backward facing steps
T2  - IUTAM Laminar-Turbulent Transition
UR  - http://dx.doi.org/10.1007/978-3-030-67902-6_30
UR  - http://hdl.handle.net/10044/1/88927
UR  - https://www.springer.com/gp/book/9783030679019
VL  - 38
ER  -
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