1. Reference problem#
1.1. Geometry#
Length: |
\(L=4m\) |
width: |
\(l=2m\) |
height: |
\(h=2m\) |
Shell thickness: |
\(e={10}^{-3}m\) |
Radius of the spheres: |
\(R=0.5m\) |
1.2. Material properties#
Structure: steel - elastic material
\(E={2.10}^{11}\mathrm{Pa}\)
\(\nu =0.3\)
\({\rho }_{s}=7800\mathrm{kg}/{m}^{3}\)
The springs have the following stiffness:
\(\mathrm{K1}={10}^{6}N/m\) |
|
|
Fluid: water - equivalent thermal material
\(\lambda =1.\)
the specific heat plays the role of the density of the fluid: \({\rho }_{f}=1000\mathrm{kg}/{m}^{3}\)
1.3. Boundary conditions and loads#
On the structure side: the degrees of freedom of rotation \(\mathrm{DRX}\), \(\mathrm{DRY}\), \(\mathrm{DRZ}\) of sphere 1 are blocked:
On the fluid side: zero pressure (i.e. temperature) is imposed on a node of the fluid mesh.