文档介绍：Cryogenics 51 (2011) 27–33
Contents lists available at ScienceDirect
Cryogenics
journal homepage: ate/cryogenics
Improved correlations putations of liquid helium two phase flow
in cryogenic transfer lines
⇑
Tejas Rane a, , Anindya Chakravarty a, . Singh b, Trilok Singh a
a CrTD, Bhabha Atomic Research Centre, Mumbai, India
b RSD, Bhabha Atomic Research Centre, Mumbai, India
article info abstract
Article history: The available experimental data, Vishnev et al. [6], implies that the widely used homogenous equilibrium
Received 2 August 2010 model and the Martinelli–Nelson equation do not map correctly the pressure drop data for horizontal
Received in revised form 23 September liquid helium two phase flow particularly in cases for high vapour fraction. Hence, considering the empir-
2010
ical nature of Martinelli–Nelson equation, suitable parameters and terms have been suggested so that,
Accepted 15 October 2010
the pressure drop can be better predicted. The proposed equation being a third order in ‘x’(vapour frac-
tion) is more accurate to predict the characteristic behavior of liquid helium two phase flow as observed
in experiments [6], Mamedov et al. [7], and Deev et al. [8], which the available equations are unable to
Keywords:
predict.
C. Two phase flow
B. Liquid helium Ó 2010 Elsevier Ltd. All rights reserved.
C. Pressure drop
F. Transfer line