Compact Heat Exchangers and Enhancement Technology for the Process Industries - 2003

ISBN Print: 978-1-56700-195-2

SOME INVESTIGATIONS ON TWO-PHASE UPWARD FLOW IN SMALL CHANNELS AT SMALL MASS FLUXES

DOI: 10.1615/978-1-56700-195-2.520
pages 387-390

Аннотация

This paper presents adiabatic two-phase pressure drop measurements in vertical upward flow in small channels at small mass fluxes. The measurements show a mismatch between the measured and the predicted pressure drops at these conditions. The paper demonstrates that normal two-phase pressure drop correlations based on the slip ratio fail to predict the liquid hold-up for small mass fluxes. A modification, which improves the agreement with experimental data, is developed in the paper.