Computational Domain

The figure above shows the proposed computational domain which takes into account the distance of the riser to the free-surface and to the bottom of the basin. The diameter of the riser without strakes is D=0.2m and the length L=3.523m. For a reference frame with the origin at the axis of the cylinder in the mid-section of the riser

a must be larger or equal than 5 (). Participants may choose to extend the domain in the longitudinal direction. It is recommended that participants check the sensitivity of the solution to the value of a.