Hydrodynamics of Swirling Steam–Water Two-Phase Flows under External Shear

Author:

Ghazwani Hassan A. S.1,Sanaullah Khairuddin2,Khan Afrasyab3ORCID

Affiliation:

1. Department of Mechanical Engineering, Faculty of Engineering, Jazan University, Jazan P.O. Box 45124, Saudi Arabia

2. Discipline of Chemical Engineering, School of Engineering, University of KwaZulu-Natal, Durban 4041, South Africa

3. Sino-French United Institute (DCI), Dongguan University of Technology (DGUT), Dongguan 523820, China

Abstract

The hydrodynamics of steam–water two-phase flows under the effects of shearing, swirling, and large-scale discrete boundary conditions were investigated on an experimental basis. The steam was injected in a swirling configuration into concurrently flowing water. Both the steam and water were injected at gauge pressures of 1.0 and 2.0 bars, whereas the swirling was caused by a propeller moving at rotational speeds of 60 and 300 rpm. The ensembled normalized amplitudes of the velocity fluctuations across a layer defined by spatial positions along the radial and axial directions inhibited the swirling steam–water two-phase flows. This ensembled nature and the normalized amplitudes of the velocity fluctuations were investigated under the action of the above-stated operating conditions, and it was found that the swirling steam–water two-phase body of the flow showed proportionally varying percentages of ensembled-normalized amplitudes of the velocity fluctuations.

Funder

Deanship of Scientific Research (DSR) at Jazan University, Jazan, Kingdom of Saudi Arabia

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Mechanical Engineering,Condensed Matter Physics

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