3-D numerical modelling of flow around a groin

A 3-D flow code, EllipSys3D, has been implemented to simulate the 3-D flow around a groin in steady current. The k  turbulence model has been used for closure. Two kinds of groins are considered: (1) A vertical-wall groin, and (2) A groin with a side slope. Steady-flow simulations were conducted. The paper reports early results of the investigation.

The simulations capture main features of the flow around the groin. The horseshoe vortex in front of the vertical-wall groin is resolved. The vortex shedding at the head is not resolved because no transient flow simulations have been conducted at this stage. Comparison between the vertical-wall groin case and the case of a groin with a side slope indicates that the flow around the groin undergoes notable changes.