TRAC-PF1 choked-flow model

Conference · Sat Jan 01 00:00:00 EST 1983

OSTI ID:6661855

Sahota, M S; Lime, J F

The two-phase, two-component choked-flow model implemented in the latest version of the Transient Reactor analysis Code (TRAC-PF1) was developed from first principles using the characteristic analysis approach. The subcooled choked-flow model in TRAC-PF1 is a modified form of the Burnell model. This paper discusses these choked-flow models and their implementation in TRAC-PF1. comparisons using the TRAC-PF1 choked-flow models are made with the Burnell model for subcooled flow and with the homogeneous-equilibrium model (HEM) for two-phae flow. These comparisons agree well under homogeneous conditions. Generally good agreements have been obtained between the TRAC-PF1 results from models using the choking criteria and those using a fine mesh (natural choking). Code-data comparisons between the separate-effects tests of the Marviken facility and the Edwards' blowdown experiment also are favorable. 10 figures.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6661855
• Report Number(s): LA-UR-82-1666; CONF-830103-8; ON: DE82018383
• Resource Relation: Conference: 2. international topical meeting on nuclear thermalhydraulics, Santa Barbara, CA, USA, 11 Jan 1982; Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

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