Abstract
Natural circulation boiling water reactors (NCBWRs) are prone to flow instabilities. Due to instabilities, heat transfer deteriorates. However, the extent to which the heat transfer coefficient (HTC) deteriorates is not well established. In this work, experiments are conducted under controlled flow oscillations to evaluate the impact of the time period, mean mass flux, and amplitude ratio on HTC. Existing correlations for HTC are compared with experimental results and are found to be not satisfactory. To improve the predictions of HTC, correction factors (CFs) are proposed for existing correlations. Further, an improved HTC correlation has been developed, incorporating new nondimensional numbers.
Issue Section:
Thermal Hydraulics and CFD
References
1.
Sinha
,
R. K.
, and
Kakodkar
,
A.
, 2006
, “
Design and Development of the AHWR-the Indian Thorium Fuelled Innovative Nuclear Reactor
,” Nucl. Eng. Des.
,
236
(7–8
), pp. 683
–700
.10.1016/j.nucengdes.2005.09.0262.
Nayak
,
A. K.
, and
Vijayan
,
P. K.
, 2008
, “
Flow Instabilities in Boiling Two-Phase Natural Circulation Systems: A Review
,” Sci. Technol. Nucl. Install.
, 2008, p. 573192
.10.1155/2008/5731923.
Boure
,
J. A.
,
Bergles
,
A. E.
, and
Tong
,
L. S.
, 1973
, “
Review of Two-Phase Flow Instability
,” Nucl. Eng. Des.
,
25
(2
), pp. 165
–192
.10.1016/0029-5493(73)90043-54.
Singal
,
G.
,
Atomic
,
B.
, and
Technology
,
M. O. F.
, 2016
, “
Study on the Start-Up Behavior of a Natural Circulation Pressure Tube Type BWR-Experimental and Numerical Simulations
,” M. Tech thesis, Homi Bhabha National Institute, Mumbai, India.5.
Kaichiro
,
M.
,
Hiedeaki
,
N.
, and
Itaru
,
M.
, 1985
, “
Boiling Burnout and Flow Instabilities for Water Flowing in a Round Tube Under Atmospheric Pressure
,” Int. J. Heat Mass Transfer
,
28
(6
), pp. 1115
–1129
.10.1016/0017-9310(85)90120-66.
Mamoru
,
O.
,
Hisashi
,
U.
,
Yohji
,
Y.
, and
Akio
,
T.
, 1993
, “
Dryout Under Oscillatory Flow Condition in Vertical and Horizontal Tubes-Experiments at Low Velocity and Pressure Conditions
,” Int. J. Heat Mass Transfer
,
36
(16
), pp. 4076
–4078
.10.1016/0017-9310(93)90158-37.
Ozawa
,
M.
,
Umekawa
,
H.
,
Mishima
,
K.
,
Hibiki
,
T.
, and
Saito
,
Y.
, 2001
, “
CHF in Oscillatory Flow Boiling Channels
,” Chem. Eng. Res. Des.
,
79
(4
), pp. 389
–401
.10.1205/0263876017502823198.
Guanghui
,
S.
,
Morita
,
K.
,
Fukuda
,
K.
,
Pidduck
,
M.
,
Dounan
,
J.
, and
Miettinen
,
J.
, 2003
, “
Analysis of the Critical Heat Flux in Round Vertical Tubes Under Low Pressure and Flow Oscillation Conditions: Applications of Artificial Neural Network
,” Nucl. Eng. Des.
,
220
(1
), pp. 17
–35
.10.1016/S0029-5493(02)00304-79.
Okawa
,
T.
,
Goto
,
T.
,
Minamitani
,
J.
, and
Yamagoe
,
Y.
, 2009
, “
Liquid Film Dryout in a Boiling Channel Under Flow Oscillation Conditions
,” Int. J. Heat Mass Transfer
,
52
(15–16
), pp. 3665
–3675
.10.1016/j.ijheatmasstransfer.2009.02.03410.
Okawa
,
T.
,
Goto
,
T.
, and
Yamagoe
,
Y.
, 2010
, “
Liquid Film Behavior in Annular Two-Phase Flow Under Flow Oscillation Conditions
,” Int. J. Heat Mass Transfer
,
53
(5–6
), pp. 962
–971
.10.1016/j.ijheatmasstransfer.2009.11.02411.
Zhao
,
D. W.
,
Su
,
G. H.
,
Liang
,
Z. H.
,
Zhang
,
Y. J.
,
Tian
,
W. X.
, and
Qiu
,
S. Z.
, 2011
, “
Experimental Research on Transient Critical Heat Flux in Vertical Tube Under Oscillatory Flow Condition
,” Int. J. Multiphase Flow
,
37
(9
), pp. 1235
–1244
.10.1016/j.ijmultiphaseflow.2011.06.01212.
Li
,
J.
,
Zhou
,
T.
,
Ju
,
Z.
,
Huo
,
Q.
, and
Xiao
,
Z.
, 2014
, “
Sensitivity Analysis of CHF Parameters Under Flow Instability by Using a Neural Network Method
,” Ann. Nucl. Energy
,
71
, pp. 211
–216
.10.1016/j.anucene.2014.03.04013.
Zhang
,
K.
,
Huang
,
Y. J.
,
You
,
H. B.
,
Tian
,
W. X.
,
Su
,
G. H.
, and
Qiu
,
S. Z.
, 2020
, “
Experimental Investigations on Single-Phase Convection and Critical Heat Flux in Vertical Tubes Under Oscillatory Flow Condition
,” Ann. Nucl. Energy
,
143
, p. 107433
.10.1016/j.anucene.2020.10743314.
Kumar
,
R.
,
Chandraker
,
D. K.
,
Dasgupta
,
A.
, and
Nayak
,
A. K.
, 2022
, “
Experimental Investigation of Dryout Phenomena Under Oscillatory Flow Conditions
,” Heat Transfer
,
51
(4
), pp. 3257
–3278
.10.1002/htj.2244715.
Wang
,
S. L.
,
Chen
,
C. A.
, and
Lin
,
T. F.
, 2013
, “
Oscillatory Subcooled Flow Boiling Heat Transfer of R-134a and Associated Bubble Characteristics in a Narrow Annular Duct Due to Flow Rate Oscillation
,” Int. J. Heat Mass Transfer
,
63
, pp. 255
–267
.10.1016/j.ijheatmasstransfer.2013.04.00616.
Chen
,
C. A.
,
Chang
,
W. R.
, and
Lin
,
T. F.
, 2010
, “
Time Periodic Flow Boiling Heat Transfer of R-134a and Associated Bubble Characteristics in a Narrow Annular Duct Due to Flow Rate Oscillation
,” Int. J. Heat Mass Transfer
,
53
(19–20
), pp. 3593
–3606
.10.1016/j.ijheatmasstransfer.2010.02.03817.
Park
,
I. W.
,
Ryu
,
J.
,
Fernandino
,
M.
, and
Dorao
,
C. A.
, 2018
, “
Can Flow Oscillations During Flow Boiling Deteriorate the Heat Transfer Coefficient?
,” Appl. Phys. Lett.
,
113
(15
), p. 154102
.10.1063/1.504642918.
Chen
,
J. C.
, 1966
, “
Correlation for Boiling Heat Transfer to Saturated Fluids in Convective Flow
,” Ind. Eng. Chem. Process Des. Dev.
,
5
(3
), pp. 322
–329
.10.1021/i260019a02319.
Gungor
,
K. E.
, and
Winterton
,
R. H. S.
, 1986
, “
A General Correlation for Flow Boiling in Tubes and Annuli
,” Int. J. Heat Mass Transfer
,
29
(3
), pp. 351
–358
.10.1016/0017-9310(86)90205-X20.
Liu
,
W.
,
Peng
,
S.
,
Jiang
,
G.
,
Liu
,
Y.
, and
Shan
,
J.
, 2019
, “
The Study of CHF Mechanism Model in Upflow Boiling Vertical Round Tube Under High Pressure
,” The Proceedings of the International Conference on Nuclear Engineering (ICONE)
, Tsukuba, Ibaraki, May 19–24, pp. 1
–14
.10.1299/jsmeicone.2019.27.198821.
Tran
,
T. N.
,
Wambsganss
,
M. W.
, and
France
,
D. M.
, 1996
, “
Small Circular- and Rectangular-Channel Boiling With Two Refrigerants
,” Int. J. Multiphase Flow
,
22
(3
), pp. 485
–498
.10.1016/0301-9322(96)00002-X22.
Kenning
,
D. B. R.
, and
Cooper
,
M. G.
, 1989
, “
Saturated Flow Boiling of Water in Vertical Tubes
,” Int. J. Heat Mass Transfer
,
32
(3
), pp. 445
–458
.10.1016/0017-9310(89)90132-423.
Dittus
,
F. W.
, 1930
, Heat Transfer in Automobile Radiators of the Tubler Type
, Vol.
2
,
University of California Publications in Engineering
,
Berkeley, CA
, p. 443
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