THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Lin Cai

,

Miao He

,

Ke-Zhen Huang

,

Wei Xiong

COMPUTATIONAL FLUID DYNAMICS SIMULATION OF THE SUPERSONIC STEAM EJECTOR USING DIFFERENT CONDENSATION MODEL

ABSTRACT
This paper addresses the non-equilibrium condensation (NEC) in supersonic steam ejector under the assumptions of no slip velocity between the droplets and vapor phase and homogenous nucleation. The experimental data carried out by Moore has been used to verify the numerical results. It is illustrated that the maximum value of the flow mach number of the NEC model is lower than that of the equilibrium condensation model, and NEC model increases the ejector’s entrainment ratio in comparison equilibrium condesation model. When using the NEC model, the nucleation characteristics such as subcooling degree, nucleation rate could be obtained in ejector flow field.
KEYWORDS
ejector, computational fluid dynamics, non-equilibrium condensation, droplet
PAPER SUBMITTED: 2018-07-23
PAPER REVISED: 2018-09-23
PAPER ACCEPTED: 2018-12-25
PUBLISHED ONLINE: 2019-05-26
DOI REFERENCE: https://doi.org/10.2298/TSCI180723236C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 3, PAGES [1655 - 1661]
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Computational fluid dynamics simulation of the supersonic steam ejector using different condensation model

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence