Void fraction prediction in subchannel geometry

Conference · Wed Jan 01 04:00:00 EST 1986 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:6625634

Khan, H J; Kosaly, G

Two-phase flow void fraction calculation via drift flux formulation requires specific correlations for the distribution parameter, C/sub 0/, and the vapor drift velocity, V/sub gj/. The void fraction may then be calculated from Zuber-Findlay's void-quality model. The distribution parameter is defined using void and flow distributions. Different correlations for C/sub 0/ are available for bundle-averaged void fraction calculation. Yet no such correlations have been developed for subchannel void fraction calculation. The aim of this summary is to demonstrate the results of subchannel void fraction calculation obtained from the model developed here. The three-dimensional subchannel drift flux code CANAL has been used in the present analysis to perform the calculations. The code uses four conservation equations, which include liquid and vapor continuity equations in addition to mixture momentum and energy equations. The subchannel mass flux and quality prediction capability of CANAL has already been demonstrated for a wide range of experiments. Therefore, with the use of appropriate drift flux parameters, subchannel void fractions can be calculated by CANAL.

• Research Organization: Univ. of Washington, St. Louis, MO
• OSTI ID: 6625634
• Report Number(s): CONF-860610-
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 52
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
C CODES
COMPUTER CODES
ENERGY TRANSFER
FLUID MECHANICS
HEAT TRANSFER
HYDRAULICS
MATHEMATICAL MODELS
MECHANICS
REACTOR CHANNELS
REACTOR COMPONENTS
VOID FRACTION