Electrohydrodynamic coalescence of droplets using an embedded potential flow model

Physical Review. E
M GarzonJ A Sethian

Abstract

The coalescence, and subsequent satellite formation, of two inviscid droplets is studied numerically. The initial drops are taken to be of equal and different sizes, and simulations have been carried out with and without the presence of an electrical field. The main computational challenge is the tracking of a free surface that changes topology. Coupling level set and boundary integral methods with an embedded potential flow model, we seamlessly compute through these singular events. As a consequence, the various coalescence modes that appear depending upon the relative ratio of the parent droplets can be studied. Computations of first stage pinch-off, second stage pinch-off, and complete engulfment are analyzed and compared to recent numerical studies and laboratory experiments. Specifically, we study the evolution of bridge radii and the related scaling laws, the minimum drop radii evolution from coalescence to satellite pinch-off, satellite sizes, and the upward stretching of the near cylindrical protrusion at the droplet top. Clear evidence of partial coalescence self-similarity is presented for parent droplet ratios between 1.66 and 4. This has been possible due to the fact that computational initial conditions only depend...Continue Reading

References

Apr 20, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A Menchaca-RochaS Zaleski
Oct 26, 2005·Physical Review Letters·Dirk G A L AartsDaniel Bonn
Oct 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Ioan MargineanAkos Vertes
Jun 4, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E GiglioC Guet
Apr 28, 2009·Physical Review Letters·F H ZhangS T Thoroddsen
Aug 8, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·S NudurupatiN Aubry
Sep 18, 2009·Nature·W D RistenpartH A Stone
May 13, 2011·Physical Review Letters·J C Burton, P Taborek
May 24, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M GarzonJ A Sethian
Apr 19, 2012·Proceedings of the National Academy of Sciences of the United States of America·Joseph D PaulsenOsman A Basaran
Jan 25, 2014·Nature Communications·Joseph D PaulsenSidney R Nagel
Apr 16, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M GarzonJ A Sethian
May 24, 2014·Nature Communications·Zbigniew RozynekJon Otto Fossum
Nov 3, 2016·Physical Chemistry Chemical Physics : PCCP·Shirui LuoTengfei Luo

❮ Previous
Next ❯

Citations

Jan 23, 2020·Physical Review. E·P S CasasJ A Sethian
Apr 14, 2020·ACS Omega·Thomas LearyCharles Maldarelli

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
M GarzonJ A Sethian
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
M GarzonJ A Sethian
The European Physical Journal. E, Soft Matter
Elena S Pikina, Boris I Ostrovskii
© 2022 Meta ULC. All rights reserved