Imperial College London
Alternate

ProfessorDemetriosPapageorgiou

Faculty of Natural Sciences, Department of Mathematics

Chair in Applied Maths and Mathematical Physics
 
 
 
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Contact

 

+44 (0)20 7594 8369d.papageorgiou Website

 
 
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Location

 

750Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Cimpeanu:2021:10.1007/s11071-021-06287-5,
author = {Cimpeanu, R and Gomes, SN and Papageorgiou, DT},
doi = {10.1007/s11071-021-06287-5},
journal = {Nonlinear Dynamics},
pages = {267--287},
title = {Active control of liquid film flows: beyond reduced-order models},
url = {http://dx.doi.org/10.1007/s11071-021-06287-5},
volume = {104},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The ability to robustly and efficiently control the dynamics of nonlinear systems lies at the heart of many current technological challenges, ranging from drug delivery systems to ensuring flight safety. Most such scenarios are too complex to tackle directly, and reduced-order modelling is used in order to create viable representations of the target systems. The simplified setting allows for the development of rigorous control theoretical approaches, but the propagation of their effects back up the hierarchy and into real-world systems remains a significant challenge. Using the canonical set-up of a liquid film falling down an inclined plane under the action of active feedback controls in the form of blowing and suction, we develop a multi-level modelling framework containing both analytical models and direct numerical simulations acting as an in silico experimental platform. Constructing strategies at the inexpensive lower levels in the hierarchy, we find that offline control transfer is not viable; however, analytically informed feedback strategies show excellent potential, even far beyond the anticipated range of applicability of the models. The detailed effects of the controls in terms of stability and treatment of nonlinearity are examined in detail in order to gain understanding of the information transfer inside the flows, which can aid transition towards other control-rich frameworks and applications.
AU  - Cimpeanu,R
AU  - Gomes,SN
AU  - Papageorgiou,DT
DO  - 10.1007/s11071-021-06287-5
EP  - 287
PY  - 2021///
SN  - 0924-090X
SP  - 267
TI  - Active control of liquid film flows: beyond reduced-order models
T2  - Nonlinear Dynamics
UR  - http://dx.doi.org/10.1007/s11071-021-06287-5
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000619758200003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://link.springer.com/article/10.1007/s11071-021-06287-5
UR  - http://hdl.handle.net/10044/1/103453
VL  - 104
ER  -
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