Consistent flow regime map and friction factors for two-phase flow

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6380990

Solbrig, C W

Many of the existing constitutive models found in large computer codes for two-phase transient flow contain errors and discontinuities. This paper presents a model which can eliminate these difficulties for steam-water flow in vertical pipes. The same model defines the flow regime and the geometry used for the evaluation of both the interphase and wall friction factors. A continuity of models traverses the void fraction domain from small bubbles recombining to larger bubbles, large bubbles elongating into slugs, and long slugs becoming infinite to produce annular flow. The bubble slug transition occurs at a void fraction of Pi/6 and the slug annular transition occurs at Pi/4. Cocurrent and countercurrent flow can be represented with a new flow regime map because the phasic velocity difference and void fraction are used as coordinates. The Moody model is used to obtain all friction factors and substructure sizes determine the roughness. Representative results are obtained from this model to show the reasonableness of the calculated friction forces for a range of flow regimes and phase velocities.

• Research Organization: Argonne National Lab.-West
• OSTI ID: 6380990
• Report Number(s): CONF-861146-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
420400 -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
BUBBLE GROWTH
COMPUTER CODES
COMPUTER GRAPHICS
COMPUTERIZED SIMULATION
ENERGY SOURCES
FLOW MODELS
FLOW RATE
FLUID FLOW
FLUID MECHANICS
FLUIDS
FOSSIL FUELS
FRICTION FACTOR
FUEL GAS
FUELS
GAS FUELS
GASES
GEOMETRY
HYDRAULICS
HYDROGEN COMPOUNDS
INCLINATION
MAPPING
MATHEMATICAL MODELS
MATHEMATICS
MECHANICS
NATURAL GAS
OXYGEN COMPOUNDS
PETROLEUM
PIPELINES
ROUGHNESS
SIMULATION
STEAM
SURFACE PROPERTIES
TRANSPORT
TWO-PHASE FLOW
VOID FRACTION
WATER