Published 1965 | Version v1
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Forced convection of liquid hydrogen - Part 2 (continued) - case of large temperature differences between the fluid and the wall (rectangular channel)

Creators

  • 1. Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires

Description

Liquid hydrogen flows in a canal of rectangular cross section of 1 x 6 mm ; only one of the larger side is heated (length 190 mm) in order to simulate the cooling of a missile nozzle. The liquid is admitted subcooled at 25 deg. K in average and under a pressure of 8 bars. Mass velocity from 8.9 to 102 g/cm2.s, heat flux from 18 to 296.6 W/cm2 and wall temperature reaching 800 deg. K. Two correlations of local heat transfer coefficients are presented, one for the region in two-phase flow and the other for the region in homogeneous gas-phase which are compared with the formula previously established for a cylindrical canal. An analysis of pressure drop is also given. Gross experimental results are separately published. (authors)

Availability note (English)

Available from INIS in electronic form

Abstract (French)

L'hydrogene liquide s'ecoule dans un canal de section rectangulaire de 1 x 6 mm, dont une seule grande face est chauffante (longueur: 190 mm), de facon a simuler le refroidissement d'une tuyere de fusee. Le liquide est admis sous-refroidi a 25 deg. K en moyenne et sous une pression de 8 bars. Vitesse massique de 8,9 a 102 g/cm2.s, densite de flux de chaleur de 18 a 296,6 W/cm2 et temperature de paroi atteignant 800 deg. K. Deux correlations des coefficients d'echanges thermiques locaux sont presentees, l'une pour la region en double-phase et l'autre pour la region en phase gazeuse homogene que l'on compare avec les formules etablies precedemment pour le canal cylindrique. Une analyse des pertes de charge est egalement donnee. Les resultats experimentaux bruts sont publies separement. (auteurs)

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Additional details

Additional titles

Original title (French)
Convection forcee de l'hydrogene liquide - 2. partie (suite) - cas de grands ecarts de temperatures entre fluide et paroi (canal rectangulaire)

Publishing Information

Imprint Pagination
30 p.
Report number
CEA-R--2796

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
37062542
Subject category
S42: ENGINEERING;
Descriptors DEI
FLUID FLOW; HEAT FLUX; HEAT LOSSES; HYDRODYNAMICS; HYDROGEN; PRESSURE DROP; SPACE DEPENDENCE; TEMPERATURE MEASUREMENT
Descriptors DEC
ELEMENTS; ENERGY LOSSES; ENERGY TRANSFER; FLUID MECHANICS; HEAT TRANSFER; LOSSES; MECHANICS; NONMETALS

Optional Information

Notes
20 refs.