The local fluid excitation force acting on a rotated square tube bundle having transverse pitch-to-diameter ratio of TD=3.1, in a single-phase cross-flow was measured, and the normalized power spectral density (NPSD) and correlation length in the axial direction of a tube were examined. The fluid excitation force acting on the interior tube was from three to ten times larger than that acting on the upstream tube. The fluid force was almost fully developed after the third row. NPSD of the fluid excitation force could be almost plotted on a single universal curve. Regarding the lift direction, there was a peak in NPSD at fDu0.3 caused by vortex shedding. Regarding the drag direction, there could be another peak in NPSD around twice the vortex shedding frequency. In the region of fDu>0.5, where the effect of the vortex shedding was assumed to be small in the lift direction, the correlation length of the lift direction was 1.1D. NPSD was a little larger than previous results for tube bundles of relatively small pitch to diameter ratios summarized by Axisa, Antunes, and Villard (1990, J. Fluid Struct., 4, pp. 321–341).

1.
Fitz-Hugh
,
J. S.
, 1973, “
Flow Induced Vibration in Heat Exchanger
,”
Proc. UKAEA∕NPL Int. Symp. on Vibration Problems in Industry
, Keswick, Paper No. 427.
2.
Blevins
,
R. D.
,
Gibert
,
R. J.
, and
Villard
,
B.
, 1981, “
Experiments on Vibration of Heat-Exchanger Tube Arrays in Cross Flow
,”
Transactions of 6th International Conference on Structural Mechanics in Reactor Technology (SMIRT)
, Paper B6∕9.
3.
Pettigrew
,
M. J.
, and
Gorman
,
D. J.
, 1981, “
Vibration of Heat Exchanger Tube Bundles in Liquid and Two-Phase Cross-Flow
,”
Flow-Induced Vibration Design Guidelines
,
ASME
,
New York
, pp.
89
110
.
4.
ASME, 1998,
ASME Boiler & Pressure Vessel Code III, Div. 1
,
ASME
,
New York
, Appendix N-1343.
5.
Chen
,
S. S.
, and
Jendrzejczyk
,
J. A.
, 1987, “
Fluid Excitation Forces Acting on a Square Tube Array
,”
ASME J. Fluids Eng.
0098-2202
109
, pp.
415
423
.
6.
Axisa
,
F.
,
Antunes
,
J.
, and
Villard
,
B.
, 1990, “
Random Excitation of Heat Exchanger Tubes by Cross-Flows
,”
J. Fluids Struct.
0889-9746
4
, pp.
321
341
.
7.
Inada
,
F.
,
Yasuo
,
A.
, and
Kawamura
,
K.
, 1993, “
Statistical Correlations of Random Fluid Forces Acting on a Tube Bundle in Cross Flow
,” Symp. on Flow-Induced Vibrations in Engineering Systems, Asia-Pacific Vibration Conf., JSME, pp.
31
34
.
8.
Au-Yang
,
M. K.
, 2001,
Flow-Induced Vibration of Power and Process Plant Components, A Practical Workbook
,
ASME
,
New York
.
9.
Blevins
,
R. D.
, 1990,
Flow Induced Vibration
,
2nd ed.
,
Krieger
,
Melbourne, FL
.
10.
Chen
,
S. S.
, 1987,
Flow-Induced Vibration of Circular Cylindrical Structures
,
Hemisphere
,
New York
.
You do not currently have access to this content.