Abstract
INTRODUCTION AND PREVIOUS INVESTIGATION
Recently, Barigou and Davidson (1993b) reported the
measurement of the pressure drop produced by the motion
of soap films of detergent-glycerol solution in vertical cylindrical tubes of varying diameter, as in a soapfilm meter. The
meter is usually used to measure gas flowrate because the
single film moves up a tube at a rate equal to the gas
flowrate. The gas flowrate is found by timing the film between two suitable graduation marks. A very small but finite
pressure is required to move the film up the tube. If there are
several separate films then a greater pressure is required.
Barigou and Davidson measured the total pressure drop AP
required to move N films at a velocity U and suggested that
these quantities could be related by the equation:
AP = N(AP0 + kU)
Recently, Barigou and Davidson (1993b) reported the
measurement of the pressure drop produced by the motion
of soap films of detergent-glycerol solution in vertical cylindrical tubes of varying diameter, as in a soapfilm meter. The
meter is usually used to measure gas flowrate because the
single film moves up a tube at a rate equal to the gas
flowrate. The gas flowrate is found by timing the film between two suitable graduation marks. A very small but finite
pressure is required to move the film up the tube. If there are
several separate films then a greater pressure is required.
Barigou and Davidson measured the total pressure drop AP
required to move N films at a velocity U and suggested that
these quantities could be related by the equation:
AP = N(AP0 + kU)
| Original language | English |
|---|---|
| Pages (from-to) | 2495-2497 |
| Number of pages | 3 |
| Journal | Chemical Engineering Science |
| Volume | 50 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 31 Aug 1995 |
| Externally published | Yes |
Keywords
- soap film meter
- gas flow rate
- pressure drop