@article{jamali_atri_gautam_saleh_tafreshi_pourdeyhimi_2023, title={Macroscale modeling of electrostatically charged facemasks}, volume={4}, ISSN={["1521-7388"]}, url={https://publons.com/wos-op/publon/65200080/}, DOI={10.1080/02786826.2023.2203188}, abstractNote={Abstract In this study, the instantaneous collection efficiency and pressure drop of an N95 facemask is numerically simulated in a setting similar (but not identical) to that used by NIOSH to certify N95 respirators. More specifically, a CPU-friendly macroscale model is developed, for the first time, to simulate the performance of an electrostatically-charged facemask when the mask is clean and when it is loaded with neutral or neutralized nanoparticles. The simulations were performed using ANSYS software enhanced with in-house subroutines, and they were calibrated using the experimental data reported in the literature for the initial efficiency of N95 masks. In addition, a correction factor was developed for the Kozeny-Carman permeability equation to expand its application to the case of nanoparticle-deposits, where the dendrites porosity is very high and the aerodynamic slip is expected to occur. Copyright © 2023 American Association for Aerosol Research}, journal={AEROSOL SCIENCE AND TECHNOLOGY}, author={Jamali, M. and Atri, S. and Gautam, S. and Saleh, A. M. and Tafreshi, H. V. and Pourdeyhimi, B.}, year={2023}, month={Apr} }
 @article{holweger_jamali_tafreshi_2021, title={Centrifugal Detachment of Compound Droplets from Fibers}, volume={37}, ISSN={["0743-7463"]}, url={https://doi.org/10.1021/acs.langmuir.0c03317}, DOI={10.1021/acs.langmuir.0c03317}, abstractNote={This article presents the first experimental-computational study on the centrifugal detachment of a compound droplet (e.g., a primary water droplet cloaked by an immiscible oil) from a fiber. The work was intended to establish a method for quantifying the force needed to detach compound droplets of different compositions from a fiber. More importantly, our study was aimed at improving the understanding of the interplay between interfacial and external forces acting on a compound droplet during forceful detachment. The experiments were conducted using DI water, for the primary droplet, and silicone or mineral oil, for the cloaking fluid. It was observed from the experiments that the silicone-oil-cloaked droplets behave differently from the mineral-oil-cloaked droplets. It was also observed that detachment force decreases with increasing the oil-to-water volume ratio. The simulations were performed using the Surface Evolver (SE) finite element code programmed for the complicated four-phase (air, water, oil, and solid) interfacial problem at hand. Our simulations revealed the evolution of the interfacial forces between the interacting phases under an increasing external body force on the droplet. The simulations also allowed us to define effective interfacial tensions and contact angles for detaching compound droplets, for the first time. Reasonable agreement was observed between the experimental measurements and computational results.}, number={2}, journal={LANGMUIR}, publisher={American Chemical Society (ACS)}, author={Holweger, H. J. and Jamali, M. and Tafreshi, H. Vahedi}, year={2021}, month={Jan}, pages={928–938} }
 @article{jamali_mehta_holweger_amrei_tafreshi_2021, title={Controlling detachment residue via magnetic repulsion force}, volume={118}, ISSN={["1077-3118"]}, url={https://doi.org/10.1063/5.0052141}, DOI={10.1063/5.0052141}, abstractNote={This work demonstrates the possibility of using a magnetic repulsion force to reduce the volume of the residue that remains on a surface after detachment of a ferrofluid droplet. This technique provides a means for controlling the detachment residue by controlling the spatial strength of the magnetic field used for droplet detachment. The experimental technique developed in this work can help us to improve our understanding of the underlying physics of droplet adhesion to a surface and the mechanics of residue formation during droplet detachment.}, number={19}, journal={APPLIED PHYSICS LETTERS}, author={Jamali, M. and Mehta, K. S. and Holweger, H. and Amrei, M. M. and Tafreshi, H.}, year={2021}, month={May} }
 @article{jamali_tafreshi_2021, title={Numerical simulation of two-phase droplets on a curved surface using Surface Evolver}, volume={629}, ISSN={["1873-4359"]}, url={https://publons.com/wos-op/publon/48546038/}, DOI={10.1016/j.colsurfa.2021.127418}, abstractNote={In this paper, we present a new approach for using the Surface Evolver (SE) finite element program to simulate the 3-D shape of a droplet on a curved surface. The approach proposed in this paper circumvents the need for carrying out complicated derivations to obtain analytical expressions for the total energy of the interfacial areas between air, liquid, and solid surfaces. More specifically, we use the solid–liquid surface energy in place of the contact angle when simulating a droplet using SE. This approach also makes it easier to use SE to model a two-phase droplet (e.g., a compound droplet) on a solid surface. To better illustrate our approach, the 3-D shape of single-phase and compound pendant droplets are simulated on a hydrophobic spherical surface in the presence of gravitational and magnetic fields. For validation purposes, our computational results are compared to dedicated experimental data obtained by compounding water droplets with oil-based ferrofluids of different surface tensions.}, journal={COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS}, author={Jamali, M. and Tafreshi, H. Vahedi}, year={2021}, month={Nov} }
 @misc{jamali_tafreshi_2021, title={Studying droplet adhesion to fibers using the magnetic field: a review paper}, volume={62}, ISSN={["1432-1114"]}, url={https://doi.org/10.1007/s00348-021-03258-9}, DOI={10.1007/s00348-021-03258-9}, number={8}, journal={EXPERIMENTS IN FLUIDS}, publisher={Springer Science and Business Media LLC}, author={Jamali, Mohammad and Tafreshi, Hooman V}, year={2021}, month={Aug} }