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Blowing a U-tube seal
Experiments were carried out with an 84 mm bore U-tube seal charged with water but in the fault condition with air being blown through. With steady state blowing, the overall pressure drop, the amount of water in the system and the splash height from the average water level in the discharge limb to...
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Published in: | Nuclear engineering and design 1989-04, Vol.113 (1), p.131-140 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | Experiments were carried out with an 84 mm bore U-tube seal charged with water but in the fault condition with air being blown through. With steady state blowing, the overall pressure drop, the amount of water in the system and the splash height from the average water level in the discharge limb to the overflow were measured. Also the amount of water expressed by a Dumitrescu-Taylor bubble when an air flow was suddenly imposed was measured.
The major part of all the measured parameters can be estimated using Gardner's [1] correlation for voidage, Nicklin, Wilkes and Davidson's [2] equation for the velocity of a Dumitrescu-Taylor bubble and a tentative new splash height correlation. The correction factors due to end effects necessary to get complete agreement between the experimental measurements and the estimates are presented.
The results have application to loop seal blowout in a PWR loss of coolant accident. |
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ISSN: | 0029-5493 1872-759X |
DOI: | 10.1016/0029-5493(89)90303-8 |