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Multiphase Science and Technology
SJR: 0.183 SNIP: 0.483 CiteScore™: 0.5

ISSN Imprimir: 0276-1459
ISSN On-line: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v25.i1.30
pages 57-78

A MODIFIED CHISHOLM'S INTERACTION FACTOR FOR AIR-WATER TWO-PHASE FLOW THROUGH A HORIZONTAL PIPE

Mahesh J. Vaze
Mechanical Engineering Department, S V National Institute of Technology Surat, India
Jyotirmay Banerjee
S V National Institute of Technology Surat, India

RESUMO

Among several methods proposed by various researchers to estimate two-phase frictional pressure drop, the procedure developed by Lockhart-Martinelli is widely used in industry. The Lockhart-Martinelli correlation for the two-phase frictional multiplier, however, does not directly incorporate the influence of the flow pattern on the pressure drop. Thus, it does not provide an accurate estimation of pressure drop for all the two-phase flow regimes. Efforts have been made by various researchers to improve the Lockhart-Martinelli correlation so as to account for the influence of phase distribution. The present work is an experimental investigation to establish the influence of phase distribution on two-phase frictional multiplier for air-water two-phase flow through a horizontal pipe. The mass flow rate of air and water are varied to obtain stratified, wavy-stratified, slug, plug, and annular flow regimes. Pressure signals are recorded at different stations along the length of the pipe for 640 combinations of air and water superficial Reynolds numbers to develop the modified correlation. The modified correlation shows better accuracy for prediction of two-phase pressure drop for all the two-phase flow regimes.

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