Interfacial characteristics of steam jet condensation in subcooled water pipe flow – An experimental and numerical study. (6th April 2022)

• Record Type: Journal Article
• Authors: Xu, Qiang; Liu, Chenying; Liu, Qimeng; Zhu, Yongshuai; Zhou, Haozu; Guo, Liejin
• Is Part Of: Chemical engineering science. Volume 251(2022)
• Publication Date: 2022-04-06
• Subjects: Condensation -- Steam plume -- Thermal hydraulic -- Jet self-similarity -- Interfacial transport; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; Chemical engineering; Periodicals; Electronic journals; 660
• DOI: 10.1016/j.ces.2022.117457
• Languages: English
• ISSNs: 0009-2509

Abstract

Highlights: Steam jet condensation in water flow is studied experimentally and numerically. The jet plume changes from cone to cylinder-cone as inlet steam pressure rises. The dynamical pressure peaks at the end of the two-phase mixing region. Thermal hydraulic parameters in wake region conforms to the jet self-similarity law. Heat and mass transfer of condensation is almost completed in the two-phase region. Abstract: Subsonic and sonic steam jet condensation in subcooled water pipe flow is investigated experimentally and numerically. Steam plumes are captured using a high-speed camera, and thermal hydraulic parameters and heat and mass transfer are revealed by a two-fluid model coupled with a phase change model. As the Reynolds number of water increases, the steam plumes show a conical shape and gradually shorten in length. The steam dynamic pressure suddenly drops at the nozzle outlet, and the water dynamic pressure rises sharply to the maximum at the end of the two-phase region where the steam volume fraction is 0.001. Starting from the single-phase region, the pressure, velocity and temperature of the jet are self-similar. The heat and mass transfer mainly occur in the two-phase region with steam volume fractions between 0.01 and 0.99, and the mass transfer reaches the maximum at the phase interface with the steam volume fraction of 0.60.