Indian Society for Heat and Mass Transfer

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Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019)

ISSN: 2688-7231 (Online)

Experimental investigations on two-phase pressure drop in small diameter at horizontal orientation

S.B. Charthankar
Department of Mechanical Engineering, Maharashtra Institute of Technology, Aurangabad

A.T. Autee
Department of Mechanical Engineering, Maharashtra Institute of Technology, Aurangabad

Ramakant Shrivastava
Department of Mechanical Engineering, Government College of Engineering, Karad

S. Srinivasa Rao
Department of Mechanical Engineering, National Institute of Technology, Warangal

DOI: 10.1615/IHMTC-2019.870
pages 515-520


Two-Phase flow occurs in number of industrial applications such as refrigeration and air-conditioning equipment, nuclear reactors and petroleum refineries etc. Accurate estimation of two−phase pressure drop is important in the design of these equipment. Two-phase pressure drop depends on several parameters including the mass fluxes of the phases, orientation of the channel and the cross section of the channel. This paper presents an experimental study of adiabatic air-water twophase flow in small diameter tubes. Experiments were conducted in circular transparent tubes of 6.0, 8.0 and 10.0 mm diameter at horizontal orientation. Experiments were conducted for the mass flux ranging from 16.11 to 1722.2 kg/m2 s. The experimental two-phase pressure drop was compared with some of the existing correlations. Comparison showed the inadequacy of the existing correlations to predict the experimental data. A new empirical correlation was developed based on the experimental data in terms of fluid properties. The developed correlation showed good agreement with the present experimental data.

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