Closure to “Discussion of ‘Karman Vortex Streets and Flow-Induced Vibrations in Tube Banks’” (1973, ASME J. Eng. Ind., 95, pp. 412–413)

1973 ◽  
Vol 95 (1) ◽  
pp. 413-414 ◽  
Author(s):  
Y. N. Chen
1974 ◽  
Vol 96 (3) ◽  
pp. 1065-1071
Author(s):  
Y. N. Chen

The phenomenon on the tubes in a tube row, which vibrate alternately along the row in the transverse and stream-wise directions, will be explained by a vortex model. This model consists of the symmetrical vortex pair trains behind the stream-wisely vibrating tubes, and the Karman vortex streets behind the transversely vibrating tubes. It will be shown in the paper that the coupling between these two groups of vortex systems can excite the tube arrays to perform this fluidelastic vibration. A criterion for the onset of this orbital movement will be given with the expression ξ = R/Sxt. This criterion predicts a strong fluidelastic vibration for tubes with low transverse tube spacings and low natural flexible frequencies in a high speed flow. The theory leading to this criterion is based on the phenomenon of the variation in the position of the separation point for the free shear layer during the cylinder vibration. A switching of the jet for maintaining the fluidelastic vibration is then a result of this variation.


1967 ◽  
Vol 71 (675) ◽  
pp. 211-214 ◽  
Author(s):  
Y. N. Chen

In the note “Aerodynamically induced vibration in coolers”, by D. G. Mabey (pp 876-7, December 1965 Journal), the results of Grotz and Arnold concerning the frequency of the Karman vortex streets in tube banks, such as in heat exchangers, are mentioned, as is also the law of the linear relation between f(T—d)/V and (2T-L)/d, as found by Putnam, where f frequency of vortex sheddingT transverse distanceL longitudinal distance between tubesd outer diameter of tubeV mean stream velocity based on minimum flow area between the tubesThis linear relation has no theoretical justification and cannot be accurate, as is admitted by the author cited. A further investigation on a theoretical basis seems to be necessary.


1990 ◽  
Vol 2 (4) ◽  
pp. 479-481 ◽  
Author(s):  
F. Ohle ◽  
P. Lehmann ◽  
E. Roesch ◽  
H. Eckelmann ◽  
A. Hübler

Author(s):  
E. Roesch ◽  
F. Ohle ◽  
H. Eckelmann ◽  
A. Hübler

2015 ◽  
Vol 201 (7) ◽  
pp. 691-703 ◽  
Author(s):  
Adrian Klein ◽  
Jan Winkelnkemper ◽  
Evelyn Dylda ◽  
Horst Bleckmann

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