Imperial College London

Professor Omar K. Matar

Faculty of EngineeringDepartment of Chemical Engineering

Vice-Dean (Education), Faculty of Engineering
 
 
 
//

Contact

 

+44 (0)20 7594 9618o.matar Website

 
 
//

Assistant

 

Miss Nazma Mojid +44 (0)20 7594 3918

 
//

Location

 

506ACE ExtensionSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Uppal:2017:10.1016/j.jnnfm.2017.01.001,
author = {Uppal, AS and Matar, OK and Craster, RV},
doi = {10.1016/j.jnnfm.2017.01.001},
journal = {Journal of Non-Newtonian Fluid Mechanics},
pages = {1--14},
title = {Dynamics of spreading thixotropic droplets},
url = {http://dx.doi.org/10.1016/j.jnnfm.2017.01.001},
volume = {240},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The e ect of thixotropy on the two-dimensional spreading of a sessiledrop is modelled using lubrication theory. Thixotropy is incorporated by theinclusion of a structure parameter, , measuring structure build-up governedby an evolution equation linked to the droplet micromechanics. A number ofmodels are derived for coupled to the interface dynamics; these range frommodels that account for the cross-stream dependence of to simpler ones inwhich this dependence is prescribed through appropriate closures. Numericalsolution of the governing equations show that thixotropy has a profound e ecton the spreading characteristics; the long-time spreading dynamics, however,are shown to be independent of the initial structural state of the droplet. Wealso compare the predictions of the various models and determine the rangeof system parameters over which the simple models provide su ciently goodapproximations of the full, two-dimensional spreading dynamics.
AU - Uppal,AS
AU - Matar,OK
AU - Craster,RV
DO - 10.1016/j.jnnfm.2017.01.001
EP - 14
PY - 2017///
SN - 1873-2631
SP - 1
TI - Dynamics of spreading thixotropic droplets
T2 - Journal of Non-Newtonian Fluid Mechanics
UR - http://dx.doi.org/10.1016/j.jnnfm.2017.01.001
UR - http://hdl.handle.net/10044/1/43829
VL - 240
ER -