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Structure and kinematics of bubble flow; Structure et cinematique des ecoulements diphasiques a bulles

Abstract

This report deals with the components and use of resistivity probes in bubble flow. With a single probe, we have studied the longitudinal and radial structure of the flow. The very complicated evolution of the radial structure is shown by the measurement of the mean bubble flux at several points in the tube. A double probe associated with a device the principle of which is given in this report, permits the measure of the local velocity of bubbles. Unlike the mean bubble flux profile, the change in the velocity profile along the tube is not significant. We have achieved the synthesis of these two pieces of information, mean local bubble flux and local velocity, by computing the mean weighed velocity in the tube. This weighed velocity compares remarkably with the velocity computed from the volumetric gas flow rate and the mean void fraction. (author) [French] Ce rapport traite d'une etude methodologique des ecoulements diphasiques a bulles. Les fluides sont l'air et l'eau, ils circulent du bas vers le haut dans un tube vertical de 32 mm de diametre et 2 metres de long. Cette etude a pour but de permettre une description fine de l'ecoulement. Pour cela, il a ete  More>>
Authors:
Lackme, C [1] 
  1. Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1967
Product Type:
Technical Report
Report Number:
CEA-R-3203
Resource Relation:
Other Information: 22 refs
Subject:
42 ENGINEERING; BUBBLES; ELECTRIC PROBES; TRAJECTORIES; TWO-PHASE FLOW; VOID FRACTION
OSTI ID:
20650694
Research Organizations:
CEA Grenoble, 38 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR05R3203090307
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[92] pages
Announcement Date:
Nov 23, 2005

Citation Formats

Lackme, C. Structure and kinematics of bubble flow; Structure et cinematique des ecoulements diphasiques a bulles. France: N. p., 1967. Web.
Lackme, C. Structure and kinematics of bubble flow; Structure et cinematique des ecoulements diphasiques a bulles. France.
Lackme, C. 1967. "Structure and kinematics of bubble flow; Structure et cinematique des ecoulements diphasiques a bulles." France.
@misc{etde_20650694,
title = {Structure and kinematics of bubble flow; Structure et cinematique des ecoulements diphasiques a bulles}
author = {Lackme, C}
abstractNote = {This report deals with the components and use of resistivity probes in bubble flow. With a single probe, we have studied the longitudinal and radial structure of the flow. The very complicated evolution of the radial structure is shown by the measurement of the mean bubble flux at several points in the tube. A double probe associated with a device the principle of which is given in this report, permits the measure of the local velocity of bubbles. Unlike the mean bubble flux profile, the change in the velocity profile along the tube is not significant. We have achieved the synthesis of these two pieces of information, mean local bubble flux and local velocity, by computing the mean weighed velocity in the tube. This weighed velocity compares remarkably with the velocity computed from the volumetric gas flow rate and the mean void fraction. (author) [French] Ce rapport traite d'une etude methodologique des ecoulements diphasiques a bulles. Les fluides sont l'air et l'eau, ils circulent du bas vers le haut dans un tube vertical de 32 mm de diametre et 2 metres de long. Cette etude a pour but de permettre une description fine de l'ecoulement. Pour cela, il a ete necessaire de developper des appareillages nouveaux et de mettre au point les methodes d'analyses correspondantes. La valeur des mesures effectuees et des methodes utilisees apparait dans une comparaison concluante et conclusive entre des resultats de mesures globales et des resultats integres de mesures locales. (auteur)}
place = {France}
year = {1967}
month = {Jul}
}