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Title: Onset of slugging criterion based on characteristics and stability analyses of transient one-dimensional two-phase flow equations of two-fluid model

Abstract

A two-step approach has been used to obtain a new criterion for the onset of slug formation: (1) In the first step, a more general expression than the existing models for the onset of slug flow criterion has been derived from the analysis of singular points and neutral stability conditions of the transient one-dimensional two-phase flow equations of two-fluid model. (2) In the second step, introducing simplifications and incorporating a parameter into the general expression obtained in the first step to satisfy a number of physical conditions a priori specified, a new simple criterion for the onset of slug flow has been derived. Comparisons of the present model with existing models and experimental data show that the present model agrees very closely with Taitel and Dukler`s model and experimental data in horizontal pipes. In an inclined pipe ({theta} = 50{degree}), however, the difference between the predictions of the present model and those of existing models is appreciably large and the present model gives the best agreement with Ohnuki et al.`s data.

Authors:
;  [1]
  1. Korea Advanced Inst. of Science and Tech., Taejon (Korea, Republic of). Dept. of Nuclear Engineering
Publication Date:
OSTI Identifier:
248020
Resource Type:
Journal Article
Journal Name:
International Communications in Heat and Mass Transfer
Additional Journal Information:
Journal Volume: 23; Journal Issue: 4; Other Information: PBD: Jul-Aug 1996
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; TWO-PHASE FLOW; FLOW MODELS; STABILITY; HYDRODYNAMICS; COMPARATIVE EVALUATIONS

Citation Formats

Chun, M H, and Sung, C K. Onset of slugging criterion based on characteristics and stability analyses of transient one-dimensional two-phase flow equations of two-fluid model. United States: N. p., 1996. Web. doi:10.1016/0735-1933(96)00032-2.
Chun, M H, & Sung, C K. Onset of slugging criterion based on characteristics and stability analyses of transient one-dimensional two-phase flow equations of two-fluid model. United States. https://doi.org/10.1016/0735-1933(96)00032-2
Chun, M H, and Sung, C K. 1996. "Onset of slugging criterion based on characteristics and stability analyses of transient one-dimensional two-phase flow equations of two-fluid model". United States. https://doi.org/10.1016/0735-1933(96)00032-2.
@article{osti_248020,
title = {Onset of slugging criterion based on characteristics and stability analyses of transient one-dimensional two-phase flow equations of two-fluid model},
author = {Chun, M H and Sung, C K},
abstractNote = {A two-step approach has been used to obtain a new criterion for the onset of slug formation: (1) In the first step, a more general expression than the existing models for the onset of slug flow criterion has been derived from the analysis of singular points and neutral stability conditions of the transient one-dimensional two-phase flow equations of two-fluid model. (2) In the second step, introducing simplifications and incorporating a parameter into the general expression obtained in the first step to satisfy a number of physical conditions a priori specified, a new simple criterion for the onset of slug flow has been derived. Comparisons of the present model with existing models and experimental data show that the present model agrees very closely with Taitel and Dukler`s model and experimental data in horizontal pipes. In an inclined pipe ({theta} = 50{degree}), however, the difference between the predictions of the present model and those of existing models is appreciably large and the present model gives the best agreement with Ohnuki et al.`s data.},
doi = {10.1016/0735-1933(96)00032-2},
url = {https://www.osti.gov/biblio/248020}, journal = {International Communications in Heat and Mass Transfer},
number = 4,
volume = 23,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 1996},
month = {Mon Jul 01 00:00:00 EDT 1996}
}