For the Japan Atomic Energy Agency sodium-cooled fast reactor, an experimental study on the fluctuating pressure of the hot legs was carried out with tests in a 1/3-scale model. The total resistance coefficient is consistent with published data, and, additionally, our research has given data up to the Reynolds number of $8.0×106$. The flow visualization and velocity measurement confirmed the independence of the flow on the Reynolds number. Pressures on the pipe wall were statistically examined to predict the characteristics of fluctuating pressures of the hot legs. It reveals that generation of fluctuating pressure is dominant on the boundary of flow separation and reattachment.

1.
Shimakawa
,
Y.
,
Kasai
,
S.
,
Konomura
,
M.
, and
Toda
,
M.
, 2002, “
An Innovative Concept of the Sodium-Cooled Reactor to Pursue High Economic Competitiveness
,”
Nucl. Technol.
0029-5450,
140
, pp.
1
17
.
2.
Idelchik
,
I. E.
, 1986,
Handbook of Hydraulic Resistance
, 2nd ed.,
Hemisphere
, New York.
3.
Schlichting
,
H.
, 1968,
Boundary-Layer Theory
, translated by
J.
Kestin
, 6th ed.,
McGraw-Hill
, New York.
4.
Beckenbach
,
E. F.
, 1961,
Second Series Modern Mathematics for the Engineer
,
McGraw-Hill
, New York.
5.
Harris
,
C. M.
, and
Crede
,
C. E.
, 1961,
Shock and Vibration Handbook
,
McGraw-Hill
, New York.
6.
Tennekes
,
H.
, and
Lumley
,
J. L.
, 1972,
A First Course in Turbulence
,
MIT
, Boston, MA.
7.
Kambe
,
T.
, and
Drazin
,
P. G.
, 1998,
Fluid Dynamics Stability and Turbulence
,
University of Tokyo
, Tokyo.
8.
Hinze
,
J. O.
, 1965,
Turbulence
,
McGraw-Hill
, New York.
9.
Everitt
,
B. S.
, 1988,
The Cambridge Dictionary of Statistics
,
Cambridge U.P.
, Cambridge.