This paper reports the findings of a sensitivity study of parameters in the shear stress transport (SST) turbulence model in a commercial computational fluid dynamics (CFD) code to predict an experiment from the Generation IV International Forum Supercritical-Water-Cooled Reactor (GIF SCWR) 2013–2014 seven-rod subchannel benchmark exercise. This study was motivated by the result of the benchmark exercise that all the CFD codes gave similar results to a subchannel code, which does not possess any sophisticated turbulence modeling. Initial findings were that the CFD codes generally underpredicted the wall temperatures on the B2 case in the region where the flow was supercritical. Therefore, it was decided to examine the effect of various turbulence model parameters to determine if a CFD code using the SST turbulence model could do a better job overall in predicting the wall temperatures of the benchmark experiments. A sensitivity study of seven parameters was done, and changes to two parameters were found to make an improvement.

References

References
1.
ANSYS® Academic Research
,
Release 14.5, Help System, CFX-Solver Theory Manual
,
ANSYS, Inc.
,
Canonsburg, PA
.
2.
Menter
,
F. R.
,
1994
, “
Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications
,”
AIAA J.
,
32
(
8
), pp.
1598
1605
. 0001-145210.2514/3.12149
3.
Launder
,
B. E.
, and
Sharma
,
B. I.
,
1974
, “
Application of the Energy-Dissipation Model of Turbulence to the Calculation of Flow Near a Spinning Disc
,”
Lett. Heat Mass Transfer
,
1
(
2
), pp.
131
137
. 0094-454810.1016/0094-4548(74)90150-7
4.
Wilcox
,
D. C.
,
1988
, “
Reassessment of the Scale-Determining Equation for Advanced Turbulence Models
,”
AIAA J.
,
26
(
11
), pp.
1299
1310
. 0001-145210.2514/3.10041
5.
Wagner
,
W.
,
Cooper
,
J. R.
,
Dittmann
,
A.
,
Kijima
,
J.
,
Kretzschmar
,
H. J.
,
Kruse
,
A.
,
Mareš
,
R.
,
Oguchi
,
K.
,
Sato
,
H.
,
Stöcker
,
I.
,
Šifner
,
O.
,
Takaishi
,
Y.
,
Tanishita
,
I.
,
Trübenbach
,
J.
, and
Willkommen
,
T.
,
2000
, “
The IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam
,”
J. Eng. Gas Turbines Power, Trans. ASME
,
122
(
1
), pp.
150
182
.
6.
Jones
,
W. P.
, and
Launder
,
B. E.
,
1972
, “
The Prediction of Laminarization With a Two-Equation Model of Turbulence
,”
Int. J. Heat Mass Transfer
,
15
(
2
), pp.
301
314
. 0017-931010.1016/0017-9310(72)90076-2
7.
Townsend
,
A. A.
,
1976
,
The Structure of Turbulent Shear Flow
,
2nd ed
.
Cambridge University Press
,
Cambridge, UK
.
8.
Launder
,
B.
, and
Sandham
,
N.
,
2002
,
Closure Strategies for Turbulent and Transition Flows
,
Cambridge University Press
,
Cambridge, UK
.
9.
Kays
,
W. M.
,
1994
, “
Turbulent Prandtl Number—Where Are We?
J. Heat Transfer
,
116
(
2
), pp.
284
295
. 0022-148110.1115/1.2911398
10.
Shitsman
,
M. E.
,
1963
, “
Impairment of the Heat Transmission at Supercritical Pressures
,”
High Temp.
,
1
(
2
), pp.
237
244
. 0018-151X
11.
Ornatskii
,
A.
,
Glushchenko
,
L.
, and
Kalachev
,
S.
,
1971
, “
Heat-Transfer With Rising and Falling Flows of Water in Tubes of Small Diameter at Supercritical Pressures
,”
Therm. Eng.
,
18
(
5
), pp.
137
141
. 0040-6015
This content is only available via PDF.
You do not currently have access to this content.