Electric current of an electrified jet issuing from a long metallic tube.

Higuera Antón, Francisco (2011). Electric current of an electrified jet issuing from a long metallic tube.. "Journal of Fluid Mechanics", v. 675 ; pp. 596-606. ISSN 0022-1120. https://doi.org/10.1017/jfm.2011.126.

Description

Title: Electric current of an electrified jet issuing from a long metallic tube.
Author/s:
  • Higuera Antón, Francisco
Item Type: Article
Título de Revista/Publicación: Journal of Fluid Mechanics
Date: 2011
ISSN: 0022-1120
Volume: 675
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper presents an analysis of the transport of electric current in a jet of an electrically conducting liquid discharging from a metallic tube into a gas or a vacuum, and subject to an electric field due to a high voltage applied between the tube and a far electrode. The flow, the surface charge and the electric field are computed in the current transfer region of the jet, where conduction current in the liquid becomes surface current due to the convection of electric charge accumulated at its surface. The electric current computed as a function of the flow rate of the liquid injected through the tube increases first as the square root of this flow rate, levels to a nearly constant value when the flow rate is increased and finally sets to a linear increase when the flow rate is further increased. The current increases linearly with the applied voltage at small and moderate values of this variable, and faster than linearly at high voltages. The characteristic length and structure of the current transfer region are determined. Order-of-magnitude estimates for jets which are only weakly stretched by the electric stresses are worked out that qualitatively account for some of the numerical results.

More information

Item ID: 11360
DC Identifier: http://oa.upm.es/11360/
OAI Identifier: oai:oa.upm.es:11360
DOI: 10.1017/jfm.2011.126
Deposited by: Memoria Investigacion
Deposited on: 30 Jul 2012 10:47
Last Modified: 20 Apr 2016 19:27
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