New generalized correlations for one-component two-phase critical flow; Homogeneous equilibrium model

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Journal of Pressure Vessel Technology; (United States)

DOI:https://doi.org/10.1115/1.2928801· OSTI ID:5648703

Barrett, M ^[1]

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1. Lab. de Thermique Industrielle, Univ. de Creteil, 9400 Creteil (FR)

Various approaches have been taken to predict two-phase choked flow. Theoretical models range all the way from the Homogeneous Equilibrium Model (HEM) to methods that attempt to represent all the nonequilibrium phenomena. One can find some recent review articles on these models. The design of protective devices used in Emergency Relief Systems, such as safety valves or bursting disks, requires the calculation of critical mass flow rate and critical pressure at throat, in terms of generative conditions. For this purpose, the safety valve (or bursting disk) is generally represented as a nozzle in which the flow is assumed isentropic. The aim of this paper is not to discuss the availability of one model or another, but to demonstrate the existence of a dimensionless parameter which could characterize the HEM choked flow.

• OSTI ID: 5648703
• Journal Information: Journal of Pressure Vessel Technology; (United States), Journal Name: Journal of Pressure Vessel Technology; (United States) Vol. 112:4; ISSN JPVTA; ISSN 0094-9930
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CALCULATION METHODS
CONTROL EQUIPMENT
CRITICAL FLOW
DESIGN
ENGINEERED SAFETY SYSTEMS
ENGINEERING
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FLOW MODELS
FLOW REGULATORS
FLUID FLOW
MATHEMATICAL MODELS
NOZZLES
PARAMETRIC ANALYSIS
RELIEF VALVES
SAFETY ENGINEERING
TWO-PHASE FLOW
VALVES