Noncoalescence in the Oblique Collision of Fluid Jets

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dc.contributorVirginia Techen
dc.contributor.authorWadhwa, Navishen
dc.contributor.authorVlachos, Pavlos P.en
dc.contributor.authorJung, Sunghwanen
dc.contributor.departmentMechanical Engineeringen
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.date.accessed2013-12-10en
dc.date.accessioned2013-12-10T17:31:20Zen
dc.date.available2013-12-10T17:31:20Zen
dc.date.issued2013-03-20en
dc.description.abstractWhen two jets of fluid collide, they can "bounce'' off each other, due to a thin film of air which keeps them separated. We describe the phenomenon of stable noncoalescence between two jets of the same fluid, colliding obliquely with each other. Using a simple experimental setup, we carry out a parametric study of the bouncing jets by varying the jet diameter, velocity, angle of inclination, and fluid viscosity, which suggests that the contact time of bouncing jets scales as the square root of the normal Weber number We. A dimensionless parameter K = (We root Re/sin alpha)(1/2), where Re is the normal Reynolds number and alpha the angle of inclination of the jets, quantitatively captures the transition of colliding jets from bouncing to coalescence. This parameter draws parallels between jet coalescence and droplet splashing and indicates that the transition is governed by a surface instability. Stable and continuous noncoalescence between fluid jets makes it a good platform for experimental studies of the interaction between fluid interfaces and the properties of the interfacial air films.en
dc.description.sponsorshipAmerican Chemical Society Petroleum Research Fund 52332-DNI9en
dc.identifier.citationWadhwa, Navish ; Vlachos, Pavlos ; Jung, Sunghwan, Mar 20, 2013. “Noncoalescence in the Oblique Collision of Fluid Jets,” PHYSICAL REVIEW LETTERS 110(12): 124502. DOI: 10.1103/PhysRevLett.110.124502en
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.110.124502en
dc.identifier.issn0031-9007en
dc.identifier.urihttp://hdl.handle.net/10919/24515en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevLett.110.124502en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectLiquid-dropsen
dc.subjectSurfacesen
dc.subjectBehavioren
dc.subjectDropletsen
dc.subjectImpacten
dc.subjectFlowen
dc.subjectFilmen
dc.subjectPhysicsen
dc.titleNoncoalescence in the Oblique Collision of Fluid Jetsen
dc.title.serialPhysical Review Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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