Almost Cylindrical Isorotating Liquid Bridges for small Bond Numbers

Vega de Prada, José Manuel and Perales Perales, José Manuel (1983). Almost Cylindrical Isorotating Liquid Bridges for small Bond Numbers. In: "4th European Symposium on Materials Sciences under Microgravity", 05/08/1983-08/04/1983, Madrid, España.

Description

Title: Almost Cylindrical Isorotating Liquid Bridges for small Bond Numbers
Author/s:
  • Vega de Prada, José Manuel
  • Perales Perales, José Manuel
Item Type: Presentation at Congress or Conference (Article)
Event Title: 4th European Symposium on Materials Sciences under Microgravity
Event Dates: 05/08/1983-08/04/1983
Event Location: Madrid, España
Title of Book: Proceedings of the 4th European Symposium on Materials Sciences under Microgravity
Date: June 1983
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Vehículos Aeroespaciales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In the absence of gravity, a cylindrical-shaped liquid bridge becomes unstable as the slenderness of the bridge A exceeds a critical value Ac, which depends on the rotational Weber number W. The unstable mode is either axisymmetric (amphora-mode) or non axisyrnmetric (C-mode) depending on whether W is smaller or bigger than 1/3. Almost cylindrical bifurcating stationary shapes, with a cylindrical volume, are calculated for |A-AC|<<1. It is seen that the bifurcation is always subcritical, i.e., the bifurcating non-cylindrical shapes appeal1 for A < Ac. The effect of a small axial gravity, i.e., a small gravitational Bond number B is also considered. It is seen that Ac(0,A) - AC(B,A) is of the order of g2/3 for amphora modes, and of the order of fi2 for C-modes. finally, a comparison is made with numerical and experimental results available in the Literature, and some comments on the dynamical behaviour of the liquid bridge are given.

More information

Item ID: 4985
DC Identifier: http://oa.upm.es/4985/
OAI Identifier: oai:oa.upm.es:4985
Deposited by: Memoria Investigacion
Deposited on: 16 Nov 2010 09:33
Last Modified: 20 Apr 2016 13:59
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