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Title: Laser/fluorescent dye flow visualization technique developed for system component thermal hydraulic studies

Abstract

A novel laser flow visualization technique is presented together with examples of its use in visualizing complex flow patterns and plans for its further development. This technique has been successfully used to study (1) the flow in a horizontal pipe subject to temperature transients, to view the formation and breakup of thermally stratified flow and to determine instantaneous velocity distributions in the same flow at various axial locations; (2) the discharge of a stratified pipe flow into a plenum exhibiting a periodic vortex pattern; and (3) the thermal-buoyancy-induced flow channeling on the shell side of a heat exchanger with glass tubes and shell. This application of the technique to heat exchangers is unique. The flow patterns deep within a large tube bundle can be studied under steady or transient conditions. This laser flow visualization technique constitutes a very powerful tool for studying single or multiphase flows in complex thermal system components.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
OSTI Identifier:
7074829
Report Number(s):
CONF-880772-1
ON: DE88012008
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 3. international symposium on refined flow modelling and turbulence measurements, Tokyo, Japan, 26 Jul 1988; Other Information: Portions are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; FLOW VISUALIZATION; MEASURING METHODS; MULTIPHASE FLOW; NUCLEAR POWER PLANTS; COOLING SYSTEMS; COOLANTS; HEAT EXCHANGERS; HYDRAULICS; LASERS; PIPES; STEADY-STATE CONDITIONS; STRATIFICATION; TEST FACILITIES; TRANSIENTS; VORTEX FLOW; ENERGY SYSTEMS; FLUID FLOW; FLUID MECHANICS; MECHANICS; NUCLEAR FACILITIES; POWER PLANTS; THERMAL POWER PLANTS; 420400* - Engineering- Heat Transfer & Fluid Flow; 220200 - Nuclear Reactor Technology- Components & Accessories

Citation Formats

Oras, J J, and Kasza, K E. Laser/fluorescent dye flow visualization technique developed for system component thermal hydraulic studies. United States: N. p., 1988. Web.
Oras, J J, & Kasza, K E. Laser/fluorescent dye flow visualization technique developed for system component thermal hydraulic studies. United States.
Oras, J J, and Kasza, K E. 1988. "Laser/fluorescent dye flow visualization technique developed for system component thermal hydraulic studies". United States. https://www.osti.gov/servlets/purl/7074829.
@article{osti_7074829,
title = {Laser/fluorescent dye flow visualization technique developed for system component thermal hydraulic studies},
author = {Oras, J J and Kasza, K E},
abstractNote = {A novel laser flow visualization technique is presented together with examples of its use in visualizing complex flow patterns and plans for its further development. This technique has been successfully used to study (1) the flow in a horizontal pipe subject to temperature transients, to view the formation and breakup of thermally stratified flow and to determine instantaneous velocity distributions in the same flow at various axial locations; (2) the discharge of a stratified pipe flow into a plenum exhibiting a periodic vortex pattern; and (3) the thermal-buoyancy-induced flow channeling on the shell side of a heat exchanger with glass tubes and shell. This application of the technique to heat exchangers is unique. The flow patterns deep within a large tube bundle can be studied under steady or transient conditions. This laser flow visualization technique constitutes a very powerful tool for studying single or multiphase flows in complex thermal system components.},
doi = {},
url = {https://www.osti.gov/biblio/7074829}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}

Conference:
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