dc.creator | López-Herrera Sánchez, José María | es |
dc.creator | Riesco Chueca, Pascual | es |
dc.creator | Gañán-Calvo, Alfonso M. | es |
dc.date.accessioned | 2021-09-17T10:01:59Z | |
dc.date.available | 2021-09-17T10:01:59Z | |
dc.date.issued | 2005 | |
dc.identifier.citation | López-Herrera Sánchez, J.M., Riesco Chueca, P. y Gañán-Calvo, A.M. (2005). Linear stability analysis of axisymmetric perturbations in imperfectly conducting liquid jets. Physics of Fluids, 17 (3), 034106-1-034106-22. | |
dc.identifier.issn | 1070-6631 | es |
dc.identifier.uri | https://hdl.handle.net/11441/125956 | |
dc.description.abstract | A discussion is presented on the role of limited conductivity and permittivity on the behavior of
electrified jets. Under certain conditions, significant departures with respect to the perfect-conductor
limit are to be expected. In addition, an exploration is undertaken concerning the validity of
one-dimensional average models in the description of charged jets. To that end, a temporal linear
modal stability analysis is carried out of poor-conductor viscous liquid jets flowing relatively to a
steady radial electric field. Only axisymmetric perturbations, leading to highest quality aerosols, are
considered. A grounded coaxial electrode is located at variable distance. Most available studies in
the literature are restricted to the perfect-conductor limit, while the present contribution is an
extension to moderate and low electrical conductivity and permittivity jets, in an effort to describe
a situation increasingly prevalent in the sector of small-scale free-surface flows. The influence of the
electrode distance b, a parameter a defined as the ratio of the electric relaxation time scale to the
capillary time scale, and the relative permittivity b on the growth rate has been explored yielding
results on the stability spectrum. In addition, arbitrary viscosity and electrification parameters are
contemplated. In a wide variety of situations, the perfect-conductor limit provides a good
approximation; however, the influence of a and b on the growth rate and most unstable wavelength
cannot be neglected in the general case. An interfacial boundary layer in the axial velocity profile
occurs in the low-viscosity limit, but this boundary layer tends to disappear when a or b are large
enough. The use of a one-dimensional s1Dd averaged model as an alternative to the 3D approach
provides a helpful shortcut and a complementary insight on the nature of the jet’s perturbative
behavior. Lowest-order 1D approximations saverage modeld, of widespread application in the
literature of electrified jets, are shown to be inaccurate in low-viscosity imperfect-conductor jets.
© 2005 American Institute of Physics. | es |
dc.description.sponsorship | Ministerio de Ciencia y Tecnología DPI2002-04305-C02-02 | es |
dc.description.sponsorship | Junta de Andalucía 72/2003 | es |
dc.format | application/pdf | es |
dc.format.extent | 23 p. | es |
dc.language.iso | eng | es |
dc.publisher | American Institute of Physics | es |
dc.relation.ispartof | Physics of Fluids, 17 (3), 034106-1-034106-22. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Axisymmetric perturbations | es |
dc.subject | Linear stability | es |
dc.subject | Liquid jets | es |
dc.title | Linear stability analysis of axisymmetric perturbations in imperfectly conducting liquid jets | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos | es |
dc.relation.projectID | DPI2002-04305-C02-02 | es |
dc.relation.projectID | 72/2003 | es |
dc.relation.publisherversion | American Institute of Physics [Society Publisher] | es |
dc.identifier.doi | 10.1063/1.1863285 | es |
dc.journaltitle | Physics of Fluids | es |
dc.publication.volumen | 17 | es |
dc.publication.issue | 3 | es |
dc.publication.initialPage | 034106-1 | es |
dc.publication.endPage | 034106-22 | es |
dc.identifier.sisius | 20184731 | es |