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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

VOID FRACTION DISTRIBUTION IN TWO-PHASE GAS-LIQUID FLOW IN INCLINED PIPES

Get access (open in a dialog) DOI: 10.1615/IHTC10.5620
pages 265-270

摘要

A fiber optical probe is used to measure the radial distribution of void fraction and bubble frequency of adiabatic air/water two-phase flow in an inclined tube. Three typical void fraction distributions can be established for vertical two-phase flow: sliding bubble, coring bubble flow and an intermediate type. These typical distributions are influenced by the angle of inclination in different ways. In case of coring bubble flow the void fraction maximum near the tube axis moves to the upper pipe crown when changing from vertical to horizontal pipe direction. In case of sliding bubble flow one of the void fraction maxima near the tube wall is increased (upper pipe crown) and the other one is decreased (lower pipe crown) when the inclination changes from vertical to horizontal. The flow pattern transition can also be seen in changing equivalent bubble diameters.