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Title: Interphase momentum transfer in the flow of bubbles through nozzles. Topical report. [PWR; BWR]

Abstract

One of the fundamental objectives in the mathematical modeling of two-phase flow is to understand and to formulate the interaction forces between two phases. For this purpose a simple and well-defined two-phase flow situation, flow of bubbles through nozzles, was set up in the laboratory. A range of liquid flow fields was set up by flowing water through nozzles. Individual bubbles were injected into the water stream and their trajectories were recorded to provide data for evaluation and comparison with theories. Because of limitations of the conventional photographic method of recording the bubble path, a computer based optical system was designed for fast data acquisition. The optical system works on the principle of the interruption of a light beam by a bubble passing between a collimated light source and a row of phototransistors. A mathematical model was set up to predict the bubble motion. Various forces included in the model are the drag force, the apparent mass force, the buoyancy force, the bubble expansion force and the history forces.

Authors:
; ;
Publication Date:
Research Org.:
Dartmouth Coll., Hanover, NH (USA). Thayer School of Engineering
OSTI Identifier:
6149236
Report Number(s):
EPRI-NP-980
TRN: 79-011268
Resource Type:
Book
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; PRIMARY COOLANT CIRCUITS; TWO-PHASE FLOW; PWR TYPE REACTORS; BUBBLES; HYDRAULICS; LIQUID FLOW; OPTICAL SYSTEMS; TEST FACILITIES; COOLING SYSTEMS; FLUID FLOW; FLUID MECHANICS; MECHANICS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210100* - Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled; 210200 - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled

Citation Formats

Kuo, J.T., Wallis, G.B., and Richter, H.J. Interphase momentum transfer in the flow of bubbles through nozzles. Topical report. [PWR; BWR]. United States: N. p., 1979. Web.
Kuo, J.T., Wallis, G.B., & Richter, H.J. Interphase momentum transfer in the flow of bubbles through nozzles. Topical report. [PWR; BWR]. United States.
Kuo, J.T., Wallis, G.B., and Richter, H.J. Thu . "Interphase momentum transfer in the flow of bubbles through nozzles. Topical report. [PWR; BWR]". United States.
@article{osti_6149236,
title = {Interphase momentum transfer in the flow of bubbles through nozzles. Topical report. [PWR; BWR]},
author = {Kuo, J.T. and Wallis, G.B. and Richter, H.J.},
abstractNote = {One of the fundamental objectives in the mathematical modeling of two-phase flow is to understand and to formulate the interaction forces between two phases. For this purpose a simple and well-defined two-phase flow situation, flow of bubbles through nozzles, was set up in the laboratory. A range of liquid flow fields was set up by flowing water through nozzles. Individual bubbles were injected into the water stream and their trajectories were recorded to provide data for evaluation and comparison with theories. Because of limitations of the conventional photographic method of recording the bubble path, a computer based optical system was designed for fast data acquisition. The optical system works on the principle of the interruption of a light beam by a bubble passing between a collimated light source and a row of phototransistors. A mathematical model was set up to predict the bubble motion. Various forces included in the model are the drag force, the apparent mass force, the buoyancy force, the bubble expansion force and the history forces.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}

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