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Impact de la micro pesanteur sur le flux de chaleur et la température de remouillage lors de la mise en froid d'un tube : application au rallumage de moteurs-fusée

Published online by Cambridge University Press:  05 August 2009

Brian Verthier ,
Gian Piero Celata ,
Giuseppe Zummo ,
Catherine Colin  and
Jérémy Follet
Brian Verthier
Affiliation:
Université de Toulouse, INPT, UPS, IMFT (Institut de Mécanique des Fluides de Toulouse), Allée Camille Soula, 31400 Toulouse, France CNRS, IMFT, 31400 Toulouse, France SNECMA, Forêt de Vernon, BP802, 27208 Vernon Cedex, France
Gian Piero Celata
Affiliation:
ENEA, Institute for Thermal Fluid Dynamics, Via Anguillarese 301, 00060 S.M. Galeria, Rome, Italy
Giuseppe Zummo
Affiliation:
ENEA, Institute for Thermal Fluid Dynamics, Via Anguillarese 301, 00060 S.M. Galeria, Rome, Italy
Catherine Colin
Affiliation:
Université de Toulouse, INPT, UPS, IMFT (Institut de Mécanique des Fluides de Toulouse), Allée Camille Soula, 31400 Toulouse, France CNRS, IMFT, 31400 Toulouse, France
Jérémy Follet
Affiliation:
SNECMA, Forêt de Vernon, BP802, 27208 Vernon Cedex, France
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Abstract

Cet article décrit la stratégie expérimentale développée afin d'améliorer la modélisation des écoulements diphasiques liquide-vapeur présents lors de la mise en froid de moteurs-fusée par des fluides cryogéniques en micro pesanteur. Une analyse de similitude est faite afin de déterminer les nombres adimensionnels pertinents pour le dimensionnement d'une expérience similaire à ces écoulements. Une analyse bibliographique sur les expériences menées en micro pesanteur, la température de remouillage et le flux lors de l'ébullition en film montre le manque de modèles adaptés à la micro gravité. Des résultats de "quenching" d'un tube de pyrex par du FC72 lors de vols paraboliques sont présentés, en particulier l'impact du niveau de gravité et du sous refroidissement sur la température de remouillage et le flux lors de l'ébullition en film. Les résultats montrent une baisse du transfert thermique en micro pesanteur et une augmentation de la température de remouillage.

Keywords

Quenchingmicrogravityfilm boilingrewettingchilldownheat transferTrempemicro pesanteurébullition en filmremouillagetransfert thermique
Type
Research Article
Information
Mechanics & Industry , Volume 10 , Issue 3-4: 19e Congrès français de mécanique (CFM 2009) , May 2009 , pp. 231 - 237
Copyright
© AFM, EDP Sciences, 2009

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