supplementrary Data for:Hydrodynamic Performance and Propulsive Penalties of a Twin-Screw Vessel in the Subcritical Shallow-Water Transition Regime

The repository includes four primary STAR-CCM+ simulation files (.sim format): Deep_Water_Base.sim: The baseline simulation in unrestricted water depth. Shallow_Water_hT2_0.sim: Simulation at an underkeel clearance ratio of $h/T = 2.0$. Shallow_Water_hT1_5.sim: Simulation at an underkeel clearance ratio of $h/T = 1.5$. Shallow_Water_hT1_2.sim: Simulation at the most restricted depth of $h/T = 1.2$. Technical Specifications: Software: CD-adapco STAR-CCM+ (Version [Insert your version here, e.g., 2021.1]). Solver: Unsteady Reynolds-Averaged Navier-Stokes (RANS). Propeller Model: Fully discretized, rotating 5-bladed propellers (fixed-pitch). Physics: $k-\omega$ SST turbulence model, VOF (Volume of Fluid) for free surface capturing, and DFBI (Dynamic Fluid-Body Interaction) for trim and sinkage. Grid: Hexahedral-dominant mesh with specialized refinements in the wake and Kelvin wave regions