Two-component flow study in large-diameter horizontal pipe Page: 2 of 30
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Two-Component Flow Study in Large-Diameter Horizontal Pipe
D. A. Eghball
Westinghouse Savannah River Company, Idaho Nationa! Engineering Laboratory, and
Wyle Laboratory cooperated in a series of single- and two-component calibration tests
conducted to obtain sufficient information for calibrating flowmeters, to observe flow
patterns, and to estimate void fractions. Testing, conducted in large-diameter horizontal
pipe, covered total flows of 0.19 to 1.89 m3/s (3000 to 30000 gpm) and inlet void fractions
up to 40%. A flow regime map, constructed using video images of the flow patterns and
void fraction data, was compared with maps from the literature, with generally good
agreement for interpretation of flow patterns.
In an attempt to simulate and better understand the two-phase flow characteristics of
data obtained during reactor hydraulic tests conducted at the Savannan River Site (SRS)
in 198'1, a series of single-component (water) and two-components (nitrogen-water)
calibration tests were conducted at Wyle Laboratory in large-diameter (381-mm, 15-in.,
l.D.) horizontal pipes. The main purpose was to gather data for calibrating flowmeters.
However, because there is little published data on two-phase flow through pipes of these
large diameters, the data obtained were used to construct a flow regime map using visual
observations of the flow patterns (from video images) and supplementary data from
Draft wSRc-MS-91-393 12/3/91 page 1
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Eghbali, D.A. Two-component flow study in large-diameter horizontal pipe, article, December 3, 1991; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc1061780/m1/2/: accessed February 23, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.