Measurement of void fraction at different flow regimes in vertical upward two-phase flow of cryogenic fluid
- Indian Institute of Technology, Kharagpur (India)
Local void fraction in a vertical cryogenic two-phase flow has been measured with the help of a small capacitance sensor. The time varying capacitance signal of the sensor is used to modulate the pulse width of a multivibrator. The probability distribution function (PDF) of the pulse width data is analysed for identifying the flow regimes, while average pulse width is correlated with the average void fraction. The calibrations of the void fraction sensor are found to be sensitive to the flow regimes. In slug and churn flow regimes the calibrations are also found to be sensitive to fluid flow rates. But no such dependence is observed in bubble and annular flow regimes. The sensitivity towards flow rates could be correlated with the position of PDF peaks of the concerned flow regimes.
- OSTI ID:
- 134953
- Report Number(s):
- CONF-950350-; TRN: 95:006099-0002
- Resource Relation:
- Conference: 10. intersociety cryogenic symposium, Houston, TX (United States), 19-23 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Tenth intersociety cryogenic symposium; Cousins, M.C. [ed.]; PB: 403 p.
- Country of Publication:
- United States
- Language:
- English
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