Fluid-Structure Interaction in a 3-by-3 Reduced-Scale Fuel Assembly Network

Figure 9

Transfer function $H_{\text{central}}(\omega )$; modulus versus frequency (a), phase versus frequency (b); coherence between $f_{\text{central}}$ and $u_{\text{central}}$ versus frequency (c); in-air, in still water, and for 3.4 m/s and 4.9 m/s fluid velocities.

(a)

(b)

(c)