On super free fall.

Higuera Antón, Francisco and Medina, A. and Higuera Antón, Francisco and Weidman, P. D. (2013). On super free fall.. "Journal of Fluid Mechanics", v. 723 ; pp. 653-664. ISSN 0022-1120. https://doi.org/10.1017/jfm.2013.144.

Description

Title: On super free fall.
Author/s:
  • Higuera Antón, Francisco
  • Medina, A.
  • Higuera Antón, Francisco
  • Weidman, P. D.
Item Type: Article
Título de Revista/Publicación: Journal of Fluid Mechanics
Date: March 2013
ISSN: 0022-1120
Volume: 723
Subjects:
Freetext Keywords: interfacial flows (free surface)
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

Villermaux & Pomeau (J. Fluid Mech., vol. 642, 2010, p. 147) analysed the motion of the interface of an inviscid liquid column released from rest in a vertical tube whose area expands gradually downwards, with application to an inverted conical container for which experimental measurements were carried out. An error in the analysis is found and corrected in the present investigation, which provides the new governing equation for the super-accelerated interface motion down gradually varying tubes in general, and integrated results for interface trajectories, velocities and accelerations down a conical tube in particular. Interestingly, the error does not affect any of the conclusions given in the 2010 paper. Further new results are reported here such as the equation governing the centre of mass and proof that the end point acceleration is exactly that of gravity

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentS2009/ENE-1597UnspecifiedUnspecifiedUnspecified

More information

Item ID: 25724
DC Identifier: http://oa.upm.es/25724/
OAI Identifier: oai:oa.upm.es:25724
DOI: 10.1017/jfm.2013.144
Deposited by: Memoria Investigacion
Deposited on: 27 Oct 2014 18:14
Last Modified: 27 Oct 2014 18:14
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