Hydrodynamic interaction in a confined corner: a CFD study of flow and force behavior around a circular cylinder
摘要
The current study explores the hydrodynamic interaction between corner walls consisting of two perpendicular surfaces and a circular cylinder, a configuration of engineering relevance that is relatively less explored. Using two-dimensional steady-state COMSOL Multiphysics simulations, the impact of corner geometry on hydrodynamic loads and flow features is thoroughly investigated for different Reynolds numbers. The findings demonstrate that the presence of the corner substantially modifies flow patterns, pressure fields, and force coefficients compared to classical wall-bounded flows. Specifically, it is illustrated that the installation of the cylinder at particular positions near the corner can effectively inhibit the generation of vortices, thus enhancing the flow. A key finding is that the lift coefficient is more sensitive to the proximity of the cylinder to the vertical wall than the drag coefficient, reaching a peak at a critical distance. These results generalize understanding of wall-proximity effects to corner geometry and shed light on the strategic placement of cylindrical structures inside thin flow regimes with implications in offshore engineering, fluid–structure interaction, and flow control strategies.