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Natural convection in an uniformly heated vertical channel with rectangular cross section (1962); Convection naturelle dans un canal vertical de section rectangulaire chauffe uniformement (1962)

Abstract

The study is experimental and theoretical. The theory is only for fully developed laminar flow. The experimental study is made with water at low temperature. The uniform heat flux varies from 0 to 16 000 BTU/hr ft{sup 2} and the distance between the heated plates from 0.2 to 0.48 inches. The experimental correlations give the mean velocity and the temperature rise of the water, the Nusselt number versus the Rayleigh number. Experience and theory agree well for heat fluxes sufficiently low. Using a special apparatus, one measures the velocity and temperature profiles between the plates and finds interesting results on the flow properties. The profiles show that the flow is not fully developed and not a Poiseuille flow. (author) [French] L'etude est theorique et experimentale. La theorie ne traite que le cas des ecoulements laminaires completement developpes. Pour toute l'etude experimentale le fluide est de l'eau a la temperature ambiante. La densite de flux de chaleur uniforme a varie entre 0 et 5 W/cm{sup 2} tandis que l'espace compris entre les deux parois chauffantes a varie entre 5 et 12 mm. On obtient des correlations empiriques qui permettent de connaitre la vitesse moyenne et rechauffement de l'eau, ainsi que le  More>>
Authors:
Vernier, Ph [1] 
  1. Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1962
Product Type:
Technical Report
Report Number:
CEA-R-2197
Resource Relation:
Other Information: 18 refs
Subject:
42 ENGINEERING; FLOW RATE; HEAT FLUX; HYDRODYNAMICS; LAMINAR FLOW; NATURAL CONVECTION; NUSSELT NUMBER; PRESSURE DROP; RECTANGULAR CONFIGURATION; TEMPERATURE DISTRIBUTION; VELOCITY; WATER
OSTI ID:
20754741
Research Organizations:
CEA Grenoble, 38 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R2197062536
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
68 pages
Announcement Date:
Aug 14, 2006

Citation Formats

Vernier, Ph. Natural convection in an uniformly heated vertical channel with rectangular cross section (1962); Convection naturelle dans un canal vertical de section rectangulaire chauffe uniformement (1962). France: N. p., 1962. Web.
Vernier, Ph. Natural convection in an uniformly heated vertical channel with rectangular cross section (1962); Convection naturelle dans un canal vertical de section rectangulaire chauffe uniformement (1962). France.
Vernier, Ph. 1962. "Natural convection in an uniformly heated vertical channel with rectangular cross section (1962); Convection naturelle dans un canal vertical de section rectangulaire chauffe uniformement (1962)." France.
@misc{etde_20754741,
title = {Natural convection in an uniformly heated vertical channel with rectangular cross section (1962); Convection naturelle dans un canal vertical de section rectangulaire chauffe uniformement (1962)}
author = {Vernier, Ph}
abstractNote = {The study is experimental and theoretical. The theory is only for fully developed laminar flow. The experimental study is made with water at low temperature. The uniform heat flux varies from 0 to 16 000 BTU/hr ft{sup 2} and the distance between the heated plates from 0.2 to 0.48 inches. The experimental correlations give the mean velocity and the temperature rise of the water, the Nusselt number versus the Rayleigh number. Experience and theory agree well for heat fluxes sufficiently low. Using a special apparatus, one measures the velocity and temperature profiles between the plates and finds interesting results on the flow properties. The profiles show that the flow is not fully developed and not a Poiseuille flow. (author) [French] L'etude est theorique et experimentale. La theorie ne traite que le cas des ecoulements laminaires completement developpes. Pour toute l'etude experimentale le fluide est de l'eau a la temperature ambiante. La densite de flux de chaleur uniforme a varie entre 0 et 5 W/cm{sup 2} tandis que l'espace compris entre les deux parois chauffantes a varie entre 5 et 12 mm. On obtient des correlations empiriques qui permettent de connaitre la vitesse moyenne et rechauffement de l'eau, ainsi que le nombre de Nusselt en fonction du nombre de Rayleigh. La correspondance entre theorie et experience est assez bonne pour des puissances de chauffage suffisamment faibles. La mesure, faite a l'aide d'une sonde speciale, des profils des vitesses et des temperatures a la sortie du canal donne des renseignements interessants sur les proprietes de l'ecoulement. Ces profils montrent notamment que l'ecoulement n'est pas developpe et ne s'effectue pas 'a la Poiseuille'. (auteur)}
place = {France}
year = {1962}
month = {Jul}
}