Effect of liquid density differences on boiling two-phase flow stability

Masahiro Furuya, Annalisa Manera, David D.B.Van Bragt, Tim H.J.J.Van Der Hagen, Willy J.M.De Kruijf

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to investigate the effect of considering liquid density dependence on local fluid temperature in the thermal-hydraulic stability, a linear stability analysis is performed for a boiling natural circulation loop with an adiabatic riser. Type-I and Type-II instabilities were to investigate according to Fukuda-Kobori's classification. Type-I instability is dominant when the flow quality is low, while Type-II instability is relevant at high flow quality. Type-II instability is well known as the typical density wave oscillation. Neglecting liquid density differences yields estimates of Type-II instability margins that are too small, due to both a change in system-dynamics features and in the operational point. On the other hand, neglecting liquid density differences yields estimates of Type-I stability margins that are too large, especially due to a change in the operational point. Neglecting density differences is thus non-conservative in this case. Therefore, it is highly recommended to include liquid density dependence on the fluid subcooling in the stability analysis if a flow loop with an adiabatic riser is operated under the condition of low flow quality.

Original languageEnglish
Pages (from-to)1094-1098
Number of pages5
JournalJournal of Nuclear Science and Technology
Volume39
Issue number10
DOIs
Publication statusPublished - 2002 Jan 1
Externally publishedYes

Fingerprint

flow stability
Density of liquids
two phase flow
Two phase flow
boiling
Boiling liquids
liquids
risers
margins
Linear stability analysis
Fluids
fluids
Density (specific gravity)
estimates
hydraulics
Dynamical systems
Hydraulics
oscillations

Keywords

  • Boiling two-phase flow
  • BWR type reactors
  • Density wave oscillations
  • Linear stability analysis
  • Natural circulation
  • Riser
  • Thermal-hydraulics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Furuya, M., Manera, A., Bragt, D. D. B. V., Hagen, T. H. J. J. V. D., & Kruijf, W. J. M. D. (2002). Effect of liquid density differences on boiling two-phase flow stability. Journal of Nuclear Science and Technology, 39(10), 1094-1098. https://doi.org/10.1080/18811248.2002.9715298

Effect of liquid density differences on boiling two-phase flow stability. / Furuya, Masahiro; Manera, Annalisa; Bragt, David D.B.Van; Hagen, Tim H.J.J.Van Der; Kruijf, Willy J.M.De.

In: Journal of Nuclear Science and Technology, Vol. 39, No. 10, 01.01.2002, p. 1094-1098.

Research output: Contribution to journalArticle

Furuya, M, Manera, A, Bragt, DDBV, Hagen, THJJVD & Kruijf, WJMD 2002, 'Effect of liquid density differences on boiling two-phase flow stability', Journal of Nuclear Science and Technology, vol. 39, no. 10, pp. 1094-1098. https://doi.org/10.1080/18811248.2002.9715298
Furuya, Masahiro ; Manera, Annalisa ; Bragt, David D.B.Van ; Hagen, Tim H.J.J.Van Der ; Kruijf, Willy J.M.De. / Effect of liquid density differences on boiling two-phase flow stability. In: Journal of Nuclear Science and Technology. 2002 ; Vol. 39, No. 10. pp. 1094-1098.
@article{ae12b78f00084e3481150ef3f0c5ca20,
title = "Effect of liquid density differences on boiling two-phase flow stability",
abstract = "In order to investigate the effect of considering liquid density dependence on local fluid temperature in the thermal-hydraulic stability, a linear stability analysis is performed for a boiling natural circulation loop with an adiabatic riser. Type-I and Type-II instabilities were to investigate according to Fukuda-Kobori's classification. Type-I instability is dominant when the flow quality is low, while Type-II instability is relevant at high flow quality. Type-II instability is well known as the typical density wave oscillation. Neglecting liquid density differences yields estimates of Type-II instability margins that are too small, due to both a change in system-dynamics features and in the operational point. On the other hand, neglecting liquid density differences yields estimates of Type-I stability margins that are too large, especially due to a change in the operational point. Neglecting density differences is thus non-conservative in this case. Therefore, it is highly recommended to include liquid density dependence on the fluid subcooling in the stability analysis if a flow loop with an adiabatic riser is operated under the condition of low flow quality.",
keywords = "Boiling two-phase flow, BWR type reactors, Density wave oscillations, Linear stability analysis, Natural circulation, Riser, Thermal-hydraulics",
author = "Masahiro Furuya and Annalisa Manera and Bragt, {David D.B.Van} and Hagen, {Tim H.J.J.Van Der} and Kruijf, {Willy J.M.De}",
year = "2002",
month = "1",
day = "1",
doi = "10.1080/18811248.2002.9715298",
language = "English",
volume = "39",
pages = "1094--1098",
journal = "Journal of Nuclear Science and Technology",
issn = "0022-3131",
publisher = "Atomic Energy Society of Japan",
number = "10",

}

TY - JOUR

T1 - Effect of liquid density differences on boiling two-phase flow stability

AU - Furuya, Masahiro

AU - Manera, Annalisa

AU - Bragt, David D.B.Van

AU - Hagen, Tim H.J.J.Van Der

AU - Kruijf, Willy J.M.De

PY - 2002/1/1

Y1 - 2002/1/1

N2 - In order to investigate the effect of considering liquid density dependence on local fluid temperature in the thermal-hydraulic stability, a linear stability analysis is performed for a boiling natural circulation loop with an adiabatic riser. Type-I and Type-II instabilities were to investigate according to Fukuda-Kobori's classification. Type-I instability is dominant when the flow quality is low, while Type-II instability is relevant at high flow quality. Type-II instability is well known as the typical density wave oscillation. Neglecting liquid density differences yields estimates of Type-II instability margins that are too small, due to both a change in system-dynamics features and in the operational point. On the other hand, neglecting liquid density differences yields estimates of Type-I stability margins that are too large, especially due to a change in the operational point. Neglecting density differences is thus non-conservative in this case. Therefore, it is highly recommended to include liquid density dependence on the fluid subcooling in the stability analysis if a flow loop with an adiabatic riser is operated under the condition of low flow quality.

AB - In order to investigate the effect of considering liquid density dependence on local fluid temperature in the thermal-hydraulic stability, a linear stability analysis is performed for a boiling natural circulation loop with an adiabatic riser. Type-I and Type-II instabilities were to investigate according to Fukuda-Kobori's classification. Type-I instability is dominant when the flow quality is low, while Type-II instability is relevant at high flow quality. Type-II instability is well known as the typical density wave oscillation. Neglecting liquid density differences yields estimates of Type-II instability margins that are too small, due to both a change in system-dynamics features and in the operational point. On the other hand, neglecting liquid density differences yields estimates of Type-I stability margins that are too large, especially due to a change in the operational point. Neglecting density differences is thus non-conservative in this case. Therefore, it is highly recommended to include liquid density dependence on the fluid subcooling in the stability analysis if a flow loop with an adiabatic riser is operated under the condition of low flow quality.

KW - Boiling two-phase flow

KW - BWR type reactors

KW - Density wave oscillations

KW - Linear stability analysis

KW - Natural circulation

KW - Riser

KW - Thermal-hydraulics

UR - http://www.scopus.com/inward/record.url?scp=0036816727&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036816727&partnerID=8YFLogxK

U2 - 10.1080/18811248.2002.9715298

DO - 10.1080/18811248.2002.9715298

M3 - Article

AN - SCOPUS:0036816727

VL - 39

SP - 1094

EP - 1098

JO - Journal of Nuclear Science and Technology

JF - Journal of Nuclear Science and Technology

SN - 0022-3131

IS - 10

ER -