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Higuera Antón, Francisco (2017). Qualitative analysis of the minimum flow rate of a cone-jet of a very polar liquid. "Journal of Fluid Mechanics", v. 816 ; pp. 428-441. ISSN 0022-1120. https://doi.org/10.1017/jfm.2017.111.
Title: | Qualitative analysis of the minimum flow rate of a cone-jet of a very polar liquid |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | Journal of Fluid Mechanics |
Date: | April 2017 |
ISSN: | 0022-1120 |
Volume: | 816 |
Subjects: | |
Freetext Keywords: | Drops and bubbles, electrohydrodynamic effects |
Faculty: | E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM) |
Department: | Mecánica de Fluidos y Propulsión Aeroespacial |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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Electrostatic atomization of a liquid of finite electrical conductivity in the so-called cone-jet regime relies on the electric shear stresses that appear in a region of the liquid surface when a meniscus of the liquid is subjected to an intense electric field. An order of magnitude analysis is used to describe the flow induced by these stresses, which drive the liquid of the meniscus into a jet that issues from the tip of the meniscus and breaks into droplets at some distance from it. When the dielectric constant of the liquid is large, the electric shear stresses extend into the jet and cause a depression that sucks liquid from the meniscus. The induced flow rate is estimated and shown to represent approximately the minimum flow rate at which a cone-jet can be established. It is argued that the meniscus can be stabilized by the electric field that the charge of the jet induces on it. This stabilizing mechanism weakens when the flow rate supplied to the meniscus decreases, and its failure may determine an alternative minimum flow rate for the cone-jet regime. The instability of the jet and existing scaling laws for the size of the spray droplets are discussed.
Type | Code | Acronym | Leader | Title |
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Government of Spain | DPI2013-47372-C02-02 | Unspecified | Unspecified | Unspecified |
Government of Spain | DPI2015-71901-REDT | Unspecified | Unspecified | Unspecified |
Item ID: | 49807 |
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DC Identifier: | https://oa.upm.es/49807/ |
OAI Identifier: | oai:oa.upm.es:49807 |
DOI: | 10.1017/jfm.2017.111 |
Official URL: | https://doi.org/10.1017/jfm.2017.111 |
Deposited by: | Memoria Investigacion |
Deposited on: | 01 Aug 2018 10:36 |
Last Modified: | 25 Mar 2019 08:08 |