Abstract
Flow regime, void fraction, slug bubble velocity and pressure loss were measured for rectangular ducts with a narrow gap and a large aspect ratio. The neutron radiography technique was used to visualize the flow and the void fraction was obtained by image processing. The void fraction was well-correlated by the drift flux model with the existing correlation for the distribution parameter, which was about 1.35. Similar results were obtained for the slug bubble velocity, however the distribution parameter was in the range 1.0-1.2. The frictional pressure loss was well-correlated by the Chisholm-Laird correlation. In collaboration with previously obtained data, it was found that the Chisholm's parameter C, however, changed from 21 to 0 as the gap decreased. © 1993.
| Original language | English |
|---|---|
| Pages (from-to) | 115-124 |
| Journal | International Journal of Multiphase Flow |
| Volume | 19 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 1993 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- flow regime
- gas-liquid flow
- narrow gap
- neutron radiography
- pressure loss
- rectangular duct
- void fraction
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