Rotational Instability of a Long Liquid Column

Sanz Andres, Angel Pedro; Perales Perales, José Manuel y Rivas, Damián (1992). Rotational Instability of a Long Liquid Column. En: "Final Reports of Sounding Rocket Experiments in Fluid Science and Materials Sciences". European Space Agency, Paris, Francia, pp. 8-21. ISBN 9290921040.

Descripción

Título: Rotational Instability of a Long Liquid Column
Autor/es:
  • Sanz Andres, Angel Pedro
  • Perales Perales, José Manuel
  • Rivas, Damián
Tipo de Documento: Sección de Libro
Título del Libro: Final Reports of Sounding Rocket Experiments in Fluid Science and Materials Sciences
Fecha: 1992
ISBN: 9290921040
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Vehículos Aeroespaciales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

A liquid column is. apart from its intrinsic interest from the basic science point of view, a good mechanical model of a crystal growth process known as the floating zone technique. In this technique, rotation of the supporting rods is used to uniformize the usually non-axisymmetric temperature field otherwise produced by the directional heating. The theory of the influence of solid rotation on the stability limit is already available and early experimental results showed the existence of two different kinds of unstable shapes (in absence of other perturbations): the amphora mode and the C-mode. The existence of the amphora mode was realized in SL-D1 experiments but C-mode breakages could not be obtained, probably due to unexpected existence of body forces that always excited the amphora mode breakage. As none of these modes can be realistically simulated on Earth, an experiment in microgravity conditions (TEXUS-23) was performed in order to obtain C-mode deformations (not achieved up to now in a reproducible way). However, experiments on Earth using the Plateau Tank Technique have been performed in order to obtain more insight in the problem and to prepare experiments aboard sounding rockets. Results of the experiment aboard TEXUS-23 show a reasonably good agreement with the theoretical predictions.

Más información

ID de Registro: 4978
Identificador DC: http://oa.upm.es/4978/
Identificador OAI: oai:oa.upm.es:4978
URL Oficial: http://www.esa.int/esaCP/index.html
Depositado por: Memoria Investigacion
Depositado el: 15 Nov 2010 11:50
Ultima Modificación: 20 Abr 2016 13:58
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