Interfacial fluid mechanics, multi-scale theory, modelling, simulation & experiments. PI: Omar K. Matar FREng @OkMatar @RAEngNews Research Chair @PREMIERE_UKRI

Joined January 2015
787 Photos and videos
Matar Fluids Group retweeted
Interested in living/active matter? I will be giving a @RoySocChem "desktop seminar" webinar on August 5, describing our recent work studying bacterial growth in complex fluids, along with my friend & intellectual hero Kate Stebe (U. Penn)! Register at: rsc.zoom.us/webinar/register….
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Matar Fluids Group retweeted
8 Jul 2025
Amazing to have @detlef_lohse with us at @ImperialChemEng 🙌 Detlef will be talking to us about melting and tipping #Glacial #melting, #ocean currents #ClimateChange @Grantham_IC @imperialcollege @poftwente @MatarLab
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Great to see @PaulaPico17 @LFuyue @JPValdes10 & Victor and Usman at #OurImperial graduation ceremony last week @RoyalAlbertHall 😊🎉 Congratulations! 🙌
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Numerical methods for #MultiphaseFlow SI for 50 Years of Int. J. Multiphase Flow @zaleski @DanieleMarchis1 Tim Colonius, Olivier Desjardins, Dirk Lucas, Ali Mani, Francesco Picano Special thanks Manuel Garcia-Villaba @tu_wien sciencedirect.com/science/ar… @LisnLab @LKahouadji
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Drop size distribution Lab experiments on single-drop fragmentation Comparison with aerial in-situ measurements Collab with @KSahuRRF_IITH Out now in Journal of #Atmospheric #Sciences #jatmossci doi.org/10.1175/JAS-D-24-024… #Multiphase #FluidDynamics #Environmental #Flows

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Super work Jesse!
Scalar mixing is a beautiful thing. We're starting to look into how compressible turbulence caused by particle wakes and shocks mix scalars
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Matar Fluids Group retweeted
New Volume of Journal of Fluid Mechanics available on Cambridge Core cup.org/3SlZ61q New Volume = New Cover 📸(R5) A modelling framework for jet penetration into soft gels Mousavi, S.P. et al. doi.org/10.1017/jfm.2025.352
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Matar Fluids Group retweeted
In their new Letter, Deblais et al. use experiments, theory, and simulations to study the very first moments of drop coalescence. In drop-drop and drop-bath configurations, the authors show the key role played by surrounding gas and van der Waals forces 🔗 go.aps.org/4j8XofH
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Matar Fluids Group retweeted
The effect of shear-thinning on the scalings and small-scale structures of turbulence Journal of Fluid Mechanics bit.ly/3ZoiDlX

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Matar Fluids Group retweeted
The next seminar in the Fluid Mechanics Webinar Series is coming up: • Title: Numerical simulations of multiphase flows with various complexities • Speaker: Omar Matar • Time: Fri 4:00 PM (BST) on Jun 6 More info and RSVP via Cassyni cassyni.com/s/fmws

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Matar Fluids Group retweeted
6 Jun 2025
Really looking forward to giving my talk as part of the Fluid Mechanics Webinar Series 😊 #JFM @MatarLab @ImperialChemEng @FluidsLeeds @JFluidMech #FluidDynamics #Multiphase #Flows
The next seminar in the Fluid Mechanics Webinar Series is coming up: • Title: Numerical simulations of multiphase flows with various complexities • Speaker: Omar Matar • Time: Fri 4:00 PM (BST) on Jun 6 More info and RSVP via Cassyni cassyni.com/s/fmws
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Many thanks for highlighting our work @JFluidMech 👍🙏 Well done @Debashis2499 @LKahouadji & Laurette Tuckerman 🙌👏 #JFM #JFMRapids #OA #BlueCode @LisnLab @ImperialChemEng
Read a new #openaccess article in #JFMRapids: "Marangoni-driven patterns, ridges and hills in surfactant-covered parametric surface waves" by Debashis Panda, Lyes Kahouadji, Laurette S. Tuckerman, et al. 📚 cup.org/3EonyvH #JFM #OA #JFMRapids
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Matar Fluids Group retweeted
🚨 PhD studentship at Imperial with @OkMatar & @Naush13 in collab with CMAC @UniStrathclyde! 💡Hybrid Physics–ML framework for efficient modelling of flow crystallisation 📅 Apply by 10 April 2025 🔗 forms.office.com/e/Zx7E4zBNV… Details: cmac.ac.uk/cedar-projects #PhD #ML #ChemEng

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Many thanks for highlighting our work @PhysRevFluids! 🙏👍😊
📢 PRFluids Editors' suggestion: Stafford & @MatarLab from @ImperialChemEng explore the regimes of thin liquid films on rapidly spinning disks. Through experiments and simulations, they reveal the transition from 2D spirals to complex 3D waves. More @ go.aps.org/3XhhfAy
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Matar Fluids Group retweeted
📢 in @JFluidMech (bit.ly/3QuxMgE) on how viscosity alters drop-impact forces. With Bin Zhang, Cunjing Lv, & @detlef_lohse. The first and second force peaks emerge from distinct flow mechanisms—one at impact, another at take-off. @poftwente bit.ly/4gUvD8P

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Very sad to hear of the passing of a giant of fluid mechanics. Prof. Acrivos leaves behind an unparalleled legacy: an incredible body of work and a family tree of students that will maintain his exacting standards. May Andy’s spirit rest in peace. cse.umn.edu/cems/news/memory…
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Matar Fluids Group retweeted
Thank you @PhysRevFluids for featuring the Drop Medusa poster 🙏🏻 @MatarLab @LauretteSTucker @LKahouadji @OkMatar
Take a look back at some of the outstanding papers published in PR Fluids in 2024 as well highlights from our Journal Club, the APS DFD award-winning posters and videos, and Frenkiel Award winners. (Music from #Uppbeat : go.aps.org/40VBAMC, License code: POH6OBESMHQOEGJP)
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Matar Fluids Group retweeted
Take a look back at some of the outstanding papers published in PR Fluids in 2024 as well highlights from our Journal Club, the APS DFD award-winning posters and videos, and Frenkiel Award winners. (Music from #Uppbeat : go.aps.org/40VBAMC, License code: POH6OBESMHQOEGJP)
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Hope you’re settling in well at @Caltech, @TheSquishyLab! 😊
New year, new institution... new website! Check out dattalab.caltech.edu for up-to-date information on who we are, what we do, and the papers we write.
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