Two simplified methods to determine void fractions for two-phase flow
- National Tsing-Hua Univ., Dept. of Nuclear Engineering, Hsinchu 30043 (TW)
- Univ. of Maryland, Chemical and Nuclear Engineering Dept., College Park, MD (US)
The void fraction is one of the most important quantities in experimental studies of two-phase flow. In this paper two simple and economical techniques to determine this quantity are developed and discussed. The improved impedance method, in which a high-frequency processing circuit is developed to measure and amplify the voltage changes between the electrodes, is the first method. The differential pressure (D/P) method, in which a commercial differential pressure transmitter is used to determine the static pressure of two-phase flow, is the second method. Experiments including tests in vertical and horizontal pipes for the impedance method and a vertical pipe test for the D/P method have been performed. Furthermore, theoretical models of these two techniques are developed. The test results show that most of the measured void fractions are within a 20% error band compared with the actual void fraction.
- OSTI ID:
- 5049220
- Journal Information:
- Nuclear Technology; (United States), Vol. 94:1; ISSN 0029-5450
- Country of Publication:
- United States
- Language:
- English
Similar Records
Void fraction measurements in two-phase flow using X-ray attenuation technique
Transient void fraction estimation: a new, simple technique