Fluidelastic instability (FEI) is the most harmful vibration mechanism for heat exchangers. Due to the inevitable manufacturing precision and assembly error, natural frequencies of tubes are not equal in the ideal condition. In order to describe the dispersion characteristic of tube bundles, a new factor named dispersion ratio is proposed in this paper. A series of tubes experiments in normal square and rotated triangular array with pitch ratio s = 1.4 and s = 1.28 were designed and conducted with high-speed camera and visual image processing system. Results show that FEI behaviors of tubes were greatly affected by tubes array geometry, pitch ratio, and dispersion ratio. Reduced critical velocity (Vcr) increased with dispersion ratio in normal square array but no obvious phenomenon was observed in rotated triangular array.

References

References
1.
Hassan
,
M. A.
, and
Weaver
,
D. S.
,
2016
, “
Modeling of Streamwise and Transverse Fluidelastic Instability in Tube Arrays
,”
ASME J. Pressure Vessel Technol.
,
138
(
5
), p. 051304.
2.
Pettigrew
,
M. J.
, and
Taylor
,
C. E.
,
1991
, “
Fluidelastic Instability of Heat Exchanger Tube Bundles: Review and Design Recommendations
,”
ASME J. Pressure Vessel Technol.
,
113
(
2
), pp.
242
256
.
3.
Connors
,
H. J.
,
1970
, “Fluidelastic Vibration of Tube Arrays Excited by Cross Flow,” Asme Winter Annual Meet, New York, Nov. 29–Dec. 3, pp. 93–107.
4.
Peake
,
C. C.
,
Gerstenkorn
,
G. F.
, and
Arnold
,
T. R.
,
1975
, “
Some Reliability Considerations for Large-Surface Condensers
,”
American Power Conference
, Chicago, IL, Apr. 21, pp. 562–574.
5.
Au-Yang
,
M. K.
,
Blevins
,
R. D.
, and
Mulcahy
,
T. M.
,
1991
, “
Flow-Induced Vibration Analysis of Tube Bundles—A Proposed Section III Appendix N Nonmandatory Code
,”
ASME J. Pressure Vessel Technol.
,
113
(
2
), pp.
257
267
.
6.
Pettigrew
,
M. J.
,
Sylvestre
,
Y.
, and
Campagna
,
A. O.
,
1978
, “
Vibration Analysis of Heat Exchanger and Steam Generator Designs
,”
Nucl. Eng. Des.
,
48
(
1
), pp.
97
115
.
7.
Weaver
,
D. S.
, and
Grover
,
L. K.
,
1978
, “
Cross-Flow Induced Vibrations in a Tube Bank—Turbulent Buffeting and Fluid Elastic Instability
,”
J. Sound Vib.
,
59
(
2
), pp.
277
294
.
8.
Païdoussis, M. P.
, 1983, “
A Review of Flow-Induced Vibrations in Reactors and Reactor Components
,”
Nucl. Eng. Des.
,
74
(
1
), pp. 31–60.
9.
Païdoussis
,
M. P.
,
1981
, “
Fluidelastic Vibration of Cylinder Arrays in Axial and Cross Flow: State of the Art
,”
J. Sound Vib.
,
76
(
3
), pp.
329
360
.
10.
Lever
,
J. H.
, and
Weaver
,
D. C.
,
1983
, “
A Theoretical Model for Fluidelastic Instability in Heat Exchanger Tube Bundles
,”
ASME J. Pressure Vessel Technol.
,
104
(
3
), pp.
147
158
.
11.
Chen
,
S. S.
,
1983
, “
Instability Mechanisms and Stability Criteria of a Group of Circular Cylinders Subjected to Cross-Flow—Part I: Theory
,”
ASME J. Vib., Acoust., Stress, Reliab. Des.
,
105
(
1
), pp.
51
58
.
12.
Chen
,
S. S.
,
1983
, “
Instability Mechanisms and Stability Criteria of a Group of Circular Cylinders Subjected to Cross-Flow—Part 2: Numerical Results and Discussions
,”
ASME J. Vib., Acoust., Stress, Reliab. Des.
,
105
(
2
), pp.
253
260
.
13.
Paidoussis
,
M. P.
, and
Price
,
S. J.
,
2006
, “
The Mechanisms Underlying Flow-Induced Instabilities of Cylinder Arrays in Crossflow
,”
J. Fluid Mech.
,
187
(
187
), pp.
45
59
.
14.
Weaver
,
D. S.
, and
Lever
,
J.
,
1977
, “
Tube Frequency Effects on Cross Flow Induced Vibrations in Tube Arrays
,”
Fifth Biennial Symposium on Turbulence
, University of Missouri-Rolla, Rolla, MO, Oct. 3–5, pp.
323
331
.
15.
Tanaka
,
H.
, and
Takahara
,
S.
,
1981
, “
Fluid Elastic Vibration of Tube Array in Cross Flow
,”
J. Sound Vib.
,
77
(
1
), pp.
19
37
.
16.
Tanaka
,
H.
,
Tanaka
,
K.
,
Shimizu
,
F.
, and
Takahara
,
S.
,
2002
, “
Fluidelastic Analysis of Tube Bundle Vibration in Cross-Flow
,”
J. Fluids Struct.
,
16
(
1
), pp.
93
112
.
17.
Khulief
,
Y.
,
Al-Kaabi
,
S.
,
Seid
,
S.
, and
Anis
,
M.
,
2010
, “
The Onset of Flow-Induced Vibrations in a Square Tube Array Subjected to Cross-Flow
,”
Sixth WSEAS International Conference on Dynamical Systems and Control
, Sousse, Tunisia, May, pp.
80
88
.
18.
Trebuňa
,
F.
,
Šimčák
,
F.
,
Frankovský
,
P.
,
Huňady
,
R.
, and
Pástor
,
M.
,
2014
,
The Application of Optical Methods in Experimental Mechanics
,
Technical University of Košice
,
Košice, Slovak
.
19.
Trebuňa
,
F.
,
Šimčák
,
F.
,
Huňady
,
R.
,
Frankovský
,
P.
, and
Hagara
,
M.
,
2015
,
The Application of Optical Methods in Experimental Mechanics
,
Technical University of Košice
,
Košice, Slovak
.
20.
Genovese
,
K.
,
Cortese
,
L.
,
Rossi
,
M.
, and
Amodio
,
D.
,
2016
, “
A 360-Deg Digital Image Correlation System for Materials Testing
,”
Opt. Lasers Eng.
,
82
, pp.
127
134
.
21.
P an
,
B.
,
Yu
,
L.
,
Yang
,
Y.
,
Song
,
W.
, and
Guo
,
L.
,
2016
, “
Full-Field Transient 3D Deformation Measurement of 3D Braided Composite Panels During Ballistic Impact Using Single-Camera High-Speed Stereo-Digital Image Correlation
,”
Compos. Struct.
,
157
, pp.
25
32
.
22.
Gariboldi
,
E.
,
Naumenko
,
K.
,
Ozhoga-Maslovskaja
,
O.
, and
Zappa
,
E.
,
2016
, “
Analysis of Anisotropic Damage in Forged Al–Cu–Mg–Si Alloy Based on Creep Tests, Micrographs of Fractured Specimen and Digital Image Correlations
,”
Mater. Sci. Eng.: A
,
652
, pp.
175
185
.
23.
Passieux
,
J. C.
,
Navarro
,
P.
,
Périé
,
J. N.
,
Marguet
,
S.
, and
Ferrero
,
J. F.
,
2014
, “
A Digital Image Correlation Method for Tracking Planar Motions of Rigid Spheres: Application to Medium Velocity Impacts
,”
Exp. Mech.
,
54
(
8
), pp.
1453
1466
.
24.
Huňady
,
R.
, and
Hagara
,
M.
,
2017
, “
A New Procedure of Modal Parameter Estimation for High-Speed Digital Image Correlation
,”
Mech. Syst. Signal Process.
,
93
, pp.
66
79
.
25.
Chu
,
T. C.
,
Ranson
,
W. F.
, and
Sutton
,
M. A.
,
1985
, “
Applications of Digital-Image-Correlation Techniques to Experimental Mechanics
,”
Exp. Mech.
,
25
(
3
), pp.
232
244
.
26.
Sutton
,
M. A.
,
Wolters
,
W. J.
,
Peters
,
W. H.
,
Ranson
,
W. F.
, and
McNeill
,
S. R.
,
1983
, “
Determination of Displacements Using an Improved Digital Correlation Method
,”
Image Vision Comput.
,
1
(
3
), pp.
133
139
.
27.
Hagara
,
M.
,
Huňady
,
R.
, and
Trebuňa
,
F.
,
2015
, “
Stress Analysis Performed in the Near Surrounding of Small Hole by a Digital Image Correlation Method
,”
Acta Mech. Slovaca
,
18
(
3–4
), pp.
74
81
.
28.
Huňady
,
R.
,
Hagara
,
M.
, and
Šimčák
,
F.
,
2014
, “
The Influence of Facet Size on the Accuracy of Modal Parameters Determined by Digital Image Correlation Technique
,”
Appl. Mech. Mater.
,
611
, pp.
496
500
.
29.
Khalifa
,
A.
,
Weaver
,
D.
, and
Ziada
,
S.
,
2012
, “
A Single Flexible Tube in a Rigid Array as a Model for Fluidelastic Instability in Tube Bundles
,”
J. Fluids Struct.
,
34
(
4
), pp.
14
32
.
30.
Lin
,
T.-K.
, and
Yu
,
M.-h.
,
2005
, “
An Experimental Study on the Cross-Flow Vibration of a Flexible Cylinder in Cylinder Arrays
,”
Exp. Thermal Fluid Sci.
,
29
(
4
), pp.
523
536
.
You do not currently have access to this content.