**5.1.2 Gravity dam**

A gravity dam shown in Fig.7 was considered to verify the correctness and efficiency of the FEM-SBFEM coupling formulation in Eq.(29). The near field was chosen as the domain with a very small distance *L H* 0.001 away from the heel of dam and was discretized by 8-noded

Fig. 7. Meshes of gravity dam with multi-sloping faces and <sup>0</sup> 45

SBFEM

Analytical solution

*r* 0.8

Fig. 6. *Cy H <sup>p</sup>* 0.6 for different

0.5

1

1.5

*Cy H <sup>p</sup>* 0.6

**5.1.2 Gravity dam** 

Fig. 7. Meshes of gravity dam with multi-sloping faces and <sup>0</sup>

Dam

*H* 2

45

Far field

A gravity dam shown in Fig.7 was considered to verify the correctness and efficiency of the FEM-SBFEM coupling formulation in Eq.(29). The near field was chosen as the domain with a very small distance *L H* 0.001 away from the heel of dam and was discretized by 8-noded

0 4 8 12

*H c* 

Near field

isoparametric acoustic fluid finite elements, while the far field was still modeled by 10 3 noded SBFEM elements. Their meshes were shown in Fig.7. Solutions from Eq.(29) and the literature (Sharan, 1992) were plotted in Fig.8. Results obtained by Eq.(29) were in excellent agreement with Sharan's results.

Fig. 8. Hydrodynamic pressure acting on gravity dam
