TWO-PHASE FLOW PHENOMENA IN A HORIZONTAL PIPE WITH A SUDDEN CONTRACTION: EFFECTS OF CONTRACTION RATIO ON FILM BEHAVIOUR
Price
Free (open access)
Transaction
Volume
123
Pages
10
Page Range
53 - 62
Published
2019
Size
941 kb
Paper DOI
10.2495/MPF190061
Copyright
WIT Press
Author(s)
TAKAHIRO FUJIMATSU, MIZUKI KITO, KUNIKAZU KONDO
Abstract
Experimental studies were conducted on the behaviour of water films in a horizontal pipe with a sudden contraction to achieve a fundamental understanding of the film mechanisms of annular flow using high- speed video imaging analysis. The sudden contraction area ratios AC = (d2 /d1)2 = 0.36 and 0.64, where d1 is the inlet pipe diameter (50 mm) and d2 is the contracted pipe diameter were examined. The experiments were carried out for various values of superficial gas and liquid velocities. The superficial gas velocity after mixing (j
Keywords
sudden contraction, disturbance wave, flow regime, wave occurrence frequency