Abstract
An experimental investigation has been carried out on two-phase flow characteristics in a 10 μm circular gap. The inlet of the gap is formed by two circular surfaces with radius 10 mm. The pressure drop is measured between two points placed -respectively- at the inlet and at the outlet of the gap. The upper and lower plates of the test section are transparent. Two-phase flow patterns were determined by video recording. The single flows of liquid FC-72 and nitrogen gas, as well as two-phase flow are investigated. In two-phase flow experiments the gap is filled by liquid. Liquid is maintained continuously by surface tension in the gap and in the meniscus formed between two inlet circular surfaces. The pressure difference includes two components, surface tension component in the meniscus and viscous one. Instability appears at the entrance of the gas into the gap. At small flowrate the gas flows in the gap has the form of chains of bubbles. Part of investigation was done in microgravity during a Parabolic Flights. In order to better understand experimental results, some numerical simulations have been done both in two and three dimensions for the real geometrical configuration for one-phase flows only.
| Original language | English |
|---|---|
| Title of host publication | International Conference on Microchannels and Minichannels |
| Editors | S.G. Kandlikar |
| Pages | 465-472 |
| Number of pages | 8 |
| Volume | 1 |
| Publication status | Published - 2003 |
| Externally published | Yes |
| Event | First International Conference on Microchannels and Minichannels - Rochester, NY, United States Duration: 24 Apr 2003 → 25 Apr 2003 |
Other
| Other | First International Conference on Microchannels and Minichannels |
|---|---|
| Country | United States |
| City | Rochester, NY |
| Period | 24.4.03 → 25.4.03 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Two-phase flow pattern and pressure drop in a microchannel. / Kabov, O. A.; Iorio, C. S.; Colinet, P.; Legros, Jean Claude.
International Conference on Microchannels and Minichannels. ed. / S.G. Kandlikar. Vol. 1 2003. p. 465-472.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Two-phase flow pattern and pressure drop in a microchannel
AU - Kabov, O. A.
AU - Iorio, C. S.
AU - Colinet, P.
AU - Legros, Jean Claude
PY - 2003
Y1 - 2003
N2 - An experimental investigation has been carried out on two-phase flow characteristics in a 10 μm circular gap. The inlet of the gap is formed by two circular surfaces with radius 10 mm. The pressure drop is measured between two points placed -respectively- at the inlet and at the outlet of the gap. The upper and lower plates of the test section are transparent. Two-phase flow patterns were determined by video recording. The single flows of liquid FC-72 and nitrogen gas, as well as two-phase flow are investigated. In two-phase flow experiments the gap is filled by liquid. Liquid is maintained continuously by surface tension in the gap and in the meniscus formed between two inlet circular surfaces. The pressure difference includes two components, surface tension component in the meniscus and viscous one. Instability appears at the entrance of the gas into the gap. At small flowrate the gas flows in the gap has the form of chains of bubbles. Part of investigation was done in microgravity during a Parabolic Flights. In order to better understand experimental results, some numerical simulations have been done both in two and three dimensions for the real geometrical configuration for one-phase flows only.
AB - An experimental investigation has been carried out on two-phase flow characteristics in a 10 μm circular gap. The inlet of the gap is formed by two circular surfaces with radius 10 mm. The pressure drop is measured between two points placed -respectively- at the inlet and at the outlet of the gap. The upper and lower plates of the test section are transparent. Two-phase flow patterns were determined by video recording. The single flows of liquid FC-72 and nitrogen gas, as well as two-phase flow are investigated. In two-phase flow experiments the gap is filled by liquid. Liquid is maintained continuously by surface tension in the gap and in the meniscus formed between two inlet circular surfaces. The pressure difference includes two components, surface tension component in the meniscus and viscous one. Instability appears at the entrance of the gas into the gap. At small flowrate the gas flows in the gap has the form of chains of bubbles. Part of investigation was done in microgravity during a Parabolic Flights. In order to better understand experimental results, some numerical simulations have been done both in two and three dimensions for the real geometrical configuration for one-phase flows only.
UR - http://www.scopus.com/inward/record.url?scp=1242264024&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1242264024&partnerID=8YFLogxK
M3 - Conference contribution
SN - 0791836673
VL - 1
SP - 465
EP - 472
BT - International Conference on Microchannels and Minichannels
A2 - Kandlikar, S.G.
ER -