Local interfacial area concentration measurement in bubbly flow

Technical Report · Mon Oct 01 04:00:00 EDT 1990

OSTI ID:5256041

Ishii, M ^[1]; Revankar, S T ^[2]

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

The interfacial area concentration is one of the most important parameters in a thermal-hydraulic analysis of two-phase flow systems based on the two-fluid model. A theoretical foundation of the measurement method for the time averaged local interfacial area using a double sensor probe is presented. Based on this theory, the double sensor resistivity probe was employed for the measurement of local properties of two-phase flow such as the interfacial velocity, local interfacial area concentration and void fraction in vertical air-water bubbly flow. Experimental data are presented on the radial profiles of the void fraction, bubble velocity, bubble chord length and interfacial area concentration at various gas flow rates. In addition to these, some statistical information on turbulent motions of bubbles are presented. Each of the double sensors are checked against the global void measurement using a differential pressure. The result is very satisfactory. Furthermore, the area averaged void fraction, and the interfacial area concentration obtained from the double sensor probe measurement compared very well with the photographic measurements. The results show that the double sensor probe method is accurate and reliable for the local measurements of interfacial area and void fraction in bubbly two-phase flow. Results of the measurement of interfacial area concentration with the double sensor probe in forced flow loop are presented for bubbly flow at different liquid flow rates. The data indicate that the radial profiles of the interfacial area concentration show similar dependence on the liquid and gas flow rate like radial profiles of void fraction in the bubbly flow regime. 38 refs., 62 figs., 2 tabs.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5256041
• Report Number(s): ANL-90/51; ON: DE91018702
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BUBBLES
DESIGN
ENERGY TRANSFER
FLOW MODELS
FLOW RATE
FLUID FLOW
FLUID MECHANICS
HYDRAULICS
INTERFACES
MASS TRANSFER
MATHEMATICAL MODELS
MEASURING METHODS
MECHANICS
MOMENTUM TRANSFER
PROBES
TWO-PHASE FLOW
VELOCITY
VOIDS