Issue 29

A. De Rosis et alii, Frattura ed Integrità Strutturale, 29 (2014) 343-350; DOI: 10.3221/IGF-ESIS.29.30 347 Figure 4 : Water height evolution at the checkpoints H1, H2, H3, and H4 computed with the present method and compared with literature results [23-25]: checkpoint H1 (top-left); checkpoint H2 (top-right); checkpoint H3 (bottom-left); checkpoint H4 (bottom- right). The gravity acceleration is denoted by g. Two slender beams obstructing a flow Making reference to Fig. 5, two identical beams (blue lines) of length L =25 are placed in a channel of width W =200 and height H =60. Figure 5 : Two slender beams obstructing a flow: sketch of the problem set-up. Moreover, the distance D is set to 100 and it is chosen as the characteristic length of the problem. At the west-most section, a constant uniform rightward velocity profile V =0.01 is prescribed, whereas at the east-most section outflow boundary conditions are enforced. The fluid possesses density  =1, viscosity  and is initially at rest. The zero-velocity condition imposed at the bottom and top walls complete the definition of the problem. Notice that all the quantities are given in LB units. Beams possess elastic modulus E =0.01, cross sectional area A =16 and inertia moment J =21.33,