[Physstaff] FW: CPE Seminar: Omar Matar

[Catherine Cheshire]

Dear All

This may be of interest to some of you.

Catherine

From: Laura Kane
Sent: 13 October 2015 14:04
Subject: CPE Seminar: Omar Matar
Importance: High

Dear all,

We would like to invite you to a seminar by Prof. Omar K. Matar, Department of Chemical Engineering, Imperial College London on Thursday 15th October at 3-4pm in Room JW604, level 6, James Weir Building.

Title:
Interfacial Fluid Mechanics: Theory, Modelling, Simulation, and Some Experiments

Bio:
Prof. O. K. Matar (OKM) is an Exxon-Mobil Fellow and Professor of Fluid Mechanics in the Department of Chemical Engineering, Imperial College London. He completed an MEng degree in chemical engineering from Imperial College, and a Ph.D. from Princeton University. His research interests are in transport phenomena and multiphase flows with a wide range of applications: process intensification, light-mediated manufacturing, surfactant-replacement therapy, crude-oil and food processing, coating flow technology, manufacturing of pharmaceuticals, pipeline transportation of crude oil, distillation, and microfluidics. OKM has studied a wide range of problems in fluid mechanics including surfactant transport on non-Newtonian layers, phase inversion in concentrated emulsions, thin film flows over rapidly rotating discs, nonlinear bubble sound interactions, fouling in heat exchangers in crude oil distillation units, dynamics of liquids spreading on compliant substrates, multiphase flow in large-diameter pipes, advanced experimental and numerical methods for the prediction of complex vapour liquid annular flows, and the removal of soft-solids adhering to solid substrates. Professor Matar has given over 50 invited presentations, and has been invited to write a number of reviews, including one in thin films in Reviews of Modern Physics (impact factor 29.6). He is the PI on a £5M Programme Grant (MEMPHIS http://www.memphis-multiphase.org/) to produce the next-generation predictive tools for multiphase flows. He is also Deputy Director of a recently-announced EPSRC CDT in Fluid Dynamics across Scales at Imperial (www.icfluids.org<http://www.icfluids.org/>). He has co-authored over 160 journal articles with an h-index of 30. He is the Editor-in-Chief of Multiphase Sci. & Tech., Editor-in-Chief (elect) of J. Eng. Math., and on the Editorial Advisory Board of Int. J. Multiphase Flow.

Abstract:
Interfacial flows have been a constant source of fascination for centuries. The complex dynamics of interfaces are at the heart of so many industrial, biomedical, natural, and daily-life settings, and span decades of length and time scales. These include the formation of wave patterns in film flows, nano- and microfluidics, coating flows, intensive processing, tear-film rupture and surfactant replacement therapy, pipeline transportation of oil-and-gas, and crude-oil processing. The addition of surface-inactive nano-particles to thin films and drops influences the interfacial dynamics and has recently been shown to accelerate spreading and to modify the boiling characteristics of nanofluids. The presence of surface-active additives can also have a dramatic influence on interfacial flows, and is responsible for phenomena such as fingering and ``super-spreading" of drops on hydrophobic substrates, and unusually large satellites in jet breakup when present at concentrations that exceed the critical micelle value. The application of electric fields can also have a drastic effect on the interfacial dynamics, and have been used to destabilise the interface in applications such as electro-spinning and to promote the formation of sprays; in the latter case, electrokinetic effects are also important. Heat transfer and evaporation can lead to spontaneous pattern formation exemplified by the development of convective rolls, and so-called hydrothermal waves in slender evaporating droplets. Finally, the presence of inertia can lead to the formation of large-amplitude, potentially three-dimensional interfacial waves in falling films, flows over spinning-discs, and annular gas-liquid flows, which may be accompanied by droplet pinch-off and entrainment. In this talk, results will be presented covering many of the above applications and settings, using a range of methods: from the use of perturbation theory and reduced order models, to the deployment of large-scale parallelised direct numerical simulations; results from experimental work will also be presented. Opportunities for future research avenues will be highlighted.
--

Dr. Karen Johnston

Chemical and Process Engineering

University of Strathclyde

4.05H James Weir Building

75 Montrose Street

Glasgow G1 1XJ

United Kingdom

http://personal.strath.ac.uk/karen.johnston/

+44 (0)141 548 4084

[cid:image001.png at 01D1001C.81648D70][cid:image002.png at 01D1001C.81648D70]<http://www.ccp5.ac.uk>
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