Page 258 - Fluid-Structure Interactions Slender Structure and Axial Flow (Volume 1)

PIPES CONVEYING FLUID: LINEAR DYNAMICS I1 239

I I I I I I
6

5

4
3
1
3
3
2

I

0
(a)

14

12

IO
s
8

6

4

-
1
0 so IO0 I so 200 250
A
(b)
Figure 4.22 Comparison of dimensionless theoretical and experimental (a) critical flow velocities.
ucJ and (b) the corresponding critical frequencies, wrf, for flutter of cantilevered pipes made of
silicone rubber (p = 0.155, p = 0.02, c 2 0). For A > 50 in (a) and A > 125 in (b), approximately.
the results of the TRF theory coincide with those of TPF theory, in the scale of this figure. -,
TRF theory, - . - . -, TPF theory - - -, EBPF theory; 0, o experimental data.