Optical probe for local void fraction and interface velocity measurements

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1135524· OSTI ID:6792129

Abuaf, N; Jones, Jr, O C; Zimmer, G A

In view of the importance of obtaining unsteady local void fraction and interface velocities in liquid--vapor two-phase flows, an optical probe with a controlled tip geometry was developed and is described. In order to minimize the disturbances caused to the flow field by the presence of the probe, its dimensions have been miniaturized. The electronic and hydrodynamic responses of the probe were investigated experimentally. The probe was found to be sensitive to both the interface velocities and the phase present at the probe tip. A possible explanation for the behavior of the probe is presented. Within the velocity range checked and with proper calibration, the optical probe described can be used to determine both local void fractions and interface velocities.

• Research Organization: Brookhaven National Laboratory, Department of Nuclear Energy, Experimental Modeling Group, Upton, New York 11973
• OSTI ID: 6792129
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 49:8; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
DESIGN
EQUIPMENT
FLUID FLOW
INTERFACES
MEASURING INSTRUMENTS
MINIATURIZATION
OPTICAL EQUIPMENT
SENSITIVITY
TWO-PHASE FLOW
VELOCIMETERS
VELOCITY
VOID FRACTION