Pressure drop from flow of cryogens in corrugated bellows

✍ Scribed by J.G. Weisend II; S.W. Van Sciver

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 668 KB
• Volume: 30
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(90)90154-5

✦ Synopsis

The pressure drop experienced by cryogenic fluids flowing through corrugated bellows is investigated up to Re = 4 x 106. The measured pressure drop is seen to increase approximately as the square of the velocity. Comparison of N 2 gas, LN 2 and He II pressure drop results indicates that there is no fundamental difference between the behaviour of classical fluids and turbulent He II in bellows systems. The present results are analysed with only limited success in terms of existing correlations for pressure drop in bellows. One finding is that the classical friction factor appears to increase slightly with Reynolds number, which is consistent with the behaviour of the drag coefficient measured in similar geometrical configurations.