ResearcherID: I-7503-2012
Postdoc Position: A postdoc position will be available; please contact me for further information.
PhD Project: Numerical modeling of complex flows.
See here for graduate degree programs information. Research Interests: Students: Kyle Mahady (co-advisor: Lou Kondic), (Winner of the NJIT CSLA outstanding graduate student award, 2014). Postdoc, University of Tennessee. Link to the PhD Thesis (METHODS FOR THE DIRECT SIMULATION OF NANOSCALE FILM BREAKUP AND CONTACT ANGLES) Ivana Seric (co-advisor: Lou Kondic), (Winner of the NJIT CSLA outstanding graduate student award and Ahluwalia Doctoral Fellowship, 2015). Data Scientist: Analytics and Strategy - Philadelphia 76ers. Link to the PhD Thesis (DIRECT COMPUTATIONS OF MARANGONI DRIVEN FLOWS USING A VOLUME OF FLUID METHOD) Valeria Barra (Winner of the Ahluwalia Doctoral Fellowship, 2017). Postdoc, University of Colorado, Boulder. Link to the PhD Thesis (NUMERICAL SIMULATIONS OF THIN VISCOELASTIC FILMS) Alexandre Guion, MIT-Nuclear Engineering, (co-advisor). Senior Research Engineer at ExxonMobil. Link to the PhD Thesis (Modeling and Simulation of Liquid Microlayer Formation and Evaporation in Nucleate Boiling using Computational Fluid Dynamics) Mingfeng Qiu, UBC-Mathematics, (co-advisor) Jerome Camugli, ESTACA, UPMC-Polytechnique France (internship advisor, summer 2017, co-advisor: Stephane Zaleski) Yousser Saade, Institut Jean le Rond d'Alembert, Sorbonne, (internship advisor, summer 2018, co-advisor: Stephane Zaleski). PhD student University of Twente Adam O'Brien, University of Toronto, visiting PhD student, fall 2018 (co-advisor: Markus Bussmann) Timothy Barnes (Supported by the Provost's Summer Undergraduate Research Program - 2013) Josef Mohrenweiser (Supported by the Provost's Summer Undergraduate Research Program - 2014) Nitya Shah (Supported by the Provost's Summer Undergraduate Research Program - 2018) Joshua Colditz (NSF Undergraduate Research Program - EXTREEMS-QED - 2018) Daniel Newton (NSF Undergraduate Research Program - EXTREEMS-QED - 2018) Jacob Dresher (Summer Research - 2018) Peter Lehrer (Summer Research - 2018) High School Students: Steven Barroqueiro, Science Park High School (Harvard); Patrick LeBlanc, High Technology High School (Notre Dame); Iris Rukshin, High Technology High School (Princeton); Farris Ahmed, South Brunswick High School (Drexel). Others: Math 450H/451H 2017-2018: a matlab code for solving general thin film equations using a fully implicit method, developed by Jacob Dresher. Basilisk/Gerris Users' Meeting 2017 Math 450H/451H 2016-2017, research project simulaitons: numrical simulations of the breakup of filaments on a substrate Math 450H/451H 2016-2017, research project FACM'15 NCS 3: The 3rd Northeast Complex Fluids and Soft Matter Workshop Fluid Dynamics Seminars, Fall2013 Fluid Dynamics Seminars, Spring2013 Fluid Dynamics Seminars, Fall2012 K. Verhulst, R. Cardinaels, P. Moldenaers, S. Afkhami, and Y. Renardy, "Influence of viscoelasticity on drop deformation and orientation in shear flow. Part 2: Dynamics", Journal of Non-Newtonian Fluid Mechanics, vol. 156, pp. 44-57, 2009. R. Cardinaels, S. Afkhami, P. Moldenaers, and Y. Renardy, "An experimental and numerical investigation of the dynamics of microconfined droplets in systems with one viscoelastic phase", Journal of Non-Newtonian Fluid Mechanics, vol. 166, pp. 52-62, 2011. V. Barra, S. Afkhami, and L. Kondic "Interfacial dynamics of thin viscoelastic films and drops", Journal of Non-Newtonian Fluid Mechanics, vol. 237, pp. 26-38, 2016. The following video shows the formation of satellite droplets after the breakup of a viscoelastic film. V. Barra, S. Chester and S. Afkhami, "Numerical simulations of nearly incompressible viscoelastic membranes", Computers & Fluids, vol. 175, pp. 36-47, 2018. S. Afkhami, Y. Renardy, and M. Renardy, "Numerical methods for the flows of two immiscible viscoelastic liquids". S. Afkhami, A. Tyler, Y. Renardy, M. Renardy, T. St. Pierre, R. Woodward, and J. S. Riffle, "Deformation of a hydrophobic ferrofluid droplet suspended in a viscous medium under uniform magnetic fields", Journal of Fluid Mechanics, vol. 663, pp. 358-384, 2010. I. Seric, S. Afkhami, and L. Kondic, "Numerical simulations of a ferrofluid drop on a substrate under an applied magnetic field", 66th Annual Meeting of the APS Division of Fluid Dynamics, 2013. I. Seric , S. Afkhami, and L. Kondic, "Interfacial instability of thin ferrofluid films under a magnetic field", Journal of Fluid Mechanics Rapids, vol. 755(9), doi: 10.1017/jfm.2014.435, 2014. S. Afkhami, L. J. Cummings, and I. Griffiths, "Interfacial deformation and jetting of a magnetic fluid", Computer & Fluids, vol. 124, pp. 149-156, 2016. M. Qiu, S. Afkhami, C.-Y. Chen, and J. Feng, "Magnetophoretic interaction of a pair of ferrofluid droplets in a rotating magnetic field", Journal of Fluid Mechanics, vol. 846, pp. 121-142, 2018. S. Afkhami and M. Bussmann, "Height functions for applying contact angles to 3D VOF simulations", International Journal for Numerical Methods in Fluids, vol. 61, pp. 827-847, 2009. S. Afkhami, S. Zaleski, and M. Bussmann, "A mesh-dependent model for applying dynamic contact angles to VOF simulations", Journal of Computational Physics, vol. 228, pp. 5370-5389, 2009. R. Cardinaels, S. Afkhami, P. Moldenaers, and Y. Renardy, "An experimental and numerical investigation of the dynamics of microconfined droplets in systems with one viscoelastic phase", Journal of Non-Newtonian Fluid Mechanics, vol. 166, pp. 52-62, 2011. S. Afkhami, A. M. Leshansky, and Y. Renardy, "Numerical investigation of elongated drops in a microfluidic T-junction", Physics of Fluids, vol. 23: 022001, 2011. P. Yue, S. Lee, S. Afkhami, and Y. Renardy, "On the motion of superparamagnetic particles in magnetic drug targeting", Acta Mechanica, vol. 223, pp. 505-527, 2012. K. Mahady, S. Afkhami, J. Diez, and L. Kondic, "Comparison of Navier-Stokes simulations with long-wave theory: study of wetting and dewetting", Physics of Fluids, vol. 25(11): 112103, 2013. K. Mahady, S. Afkhami, and L. Kondic, "A volume of fluid method for simulating fluid/fluid interfaces in contact with solid boundaries", Journal of Computational Physics, vol. 294, pp. 243-257, 2015. K. Mahady, S. Afkhami, and L. Kondic, "On the influence of initial geometry on the evolution of liquid filaments", Physics of Fluids, vol. 27(9), 092104, 2015. K. Mahady, S. Afkhami, and L. Kondic, "A numerical approach for the direct computation of flows including fluid-solid interaction: modeling contact angle, film rupture, and dewetting", Physics of Fluids, vol. 28(6), 062002, 2016. A. Dziedzic, M. Nakrani, B. Ezra, M. Syed, S. Popinet, and S. Afkhami, "Breakup of finite-size liquid filaments: Transition from no-breakup to breakup including substrate effects", The European Physical Journal E, vol. 42:18, 2019. A. M. Leshansky, S. Afkhami, M.-C. Jullien, and P. Tabeling, "Obstructed breakup of slender drops in a microfluidic T junction", Physical Review Letters, vol. 108: 264502, 2012. S. Afkhami and Y. Renardy, "A volume-of-fluid formulation for the study of co-flowing fluids governed by the Hele-Shaw equations", Physics of Fluids, vol. 25: 082001, 2013. M. Hein, S. Afkhami, R. Seemann, and L. Kondic, "Capillary focusing close to topographic step: Shape and instability of confined liquid filaments", Microfluidics and Nanofluidics, vol. 18, Issue 5-6, pp. 911-917, 2014. M. Hein, R. Seemann, and S. Afkhami, "On the capillary self-focusing in a microfluidic system", to appear: Fluid Dynamics Research, 2016. N. A. Roberts, J. D. Fowlkes, K. Mahady, S. Afkhami, L. Kondic, and P. D. Rack, "Directed assembly of one- and two-dimensional nanoparticle arrays from pulsed laser induced dewetting of square waveforms", ACS Applied Materials & Interfaces, vol. 5: 4450-4456, 2013. J. D. Fowlkes, N. A. Roberts, Y. Wu, J. A. Diez, A. G. Gonzalez, C. Hartnett, K. Mahady, S. Afkhami, L. Kondic, and P. D. Rack, "Hierarchical nanoparticle ensembles synthesized by liquid phase directed self-assembly", Nano Letters, vol. 14(2): 774-782, 2014. S. Afkhami and L. Kondic, "On the dewetting of liquefied metal nanostructures", Journal of Engineering Mathematics, vol. 94(1), pp. 5-18, 2015. K. Mahady, S. Afkhami, and L. Kondic, "On the influence of initial geometry on the evolution of liquid filaments", Physics of Fluids, vol. 27(9), 092104, 2015. The following video shows the nanoscale drop assembly via square-wave breakup. C. A. Hartnett, K. Mahady, J. D. Fowlkes, S. Afkhami, L. Kondic, and P. D. Rack, "Instability of nano and microscale liquid metal filaments: Transition from single droplet collapse to multi-droplet breakup", Langmuir, vol. 31(50), pp. 13609-13617, 2015. |