DUCTED CURRENT CFD

This model presents a Computational Fluid Dynamics (CFD) simulation of a ducted current system, focusing on the flow behavior around a central obstruction within a confined duct domain. The simulation visualizes particle traces and velocity fields to analyze how the incoming flow interacts with the internal geometry and redistributes downstream. The CFD analysis was conducted under steady-state conditions with an internal flow domain enclosed in a control volume. A velocity inlet boundary condition was applied at the upstream section, while a pressure outlet was defined at the downstream boundary. The fluid is assumed to be incompressible with constant properties, and all solid surfaces were assigned no-slip wall conditions to capture viscous effects and boundary layer development. A turbulence model, such as k-ε (k-epsilon) or k-ω SST, was employed to resolve turbulent structures, especially in regions with strong flow separation and wake formation behind the central body. Mesh refinement was applied near the obstruction and along the wake region to accurately capture velocity gradients and recirculation zones. The simulation results show that as the flow encounters the central geometry, it accelerates around the sides due to flow constriction, forming high-velocity regions (green to yellow). Downstream of the object, a wake region with low velocity and chaotic flow patterns (blue) is observed, indicating flow separation and turbulence. The particle traces clearly illustrate flow divergence, recirculation, and energy dissipation, which are critical in evaluating pressure loss and flow efficiency. This CFD model provides valuable insight into duct flow performance, obstruction effects, and flow uniformity, making it suitable for applications such as ventilation systems, aerodynamic studies, and internal flow optimization in engineering design.