Quantitative characterizations of phasic structure developments by local measurement methods in two-phase flow

Conference · Thu Jun 01 04:00:00 EDT 1995

OSTI ID:78714

Eberle, C S ^[1]; Leung, W H; Wu, Q; Ueno, T; Ishii, M ^[2]

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1. Argonne National Lab., IL (United States)
2. Purdue Univ., Lafayette, IN (United States). School of Nuclear Engineering

An experimental study on the internal structure an a out in a 25.4 mm ID pipe. The local void fraction and interfacial area concentration were measured by a double-sensor probe. The flow structure development was visualized by measuring the radial distribution of these two parameters at three axial, locations (L/D = 12, 62, and 112). A more detailed study on the fully developed flow structure was conducted at L/D = 120. The interfacial structure were measured by the double- and four-sensor probes. A bubbly to-=slug transition region was defined according to the local data.The area-averaged void fraction measurements were given by a gamma densitometer. Other parameters such as the Taylor bubble film thickness, bubble length and slug unit length in slug flow were measured by a film robe. The redundant measurements were made to calibrate the local probe measurements. The quantitative representation of the phasic structure can then be used for modeling.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 78714
• Report Number(s): ANL/IFR/CP--85915; CONF-950445--3; ON: DE95012920
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ADIABATIC PROCESSES
DENSIMETERS
INTERFACES
MEASURING METHODS
TWO-PHASE FLOW