This thesis investigates the thermo–fluid dynamic behavior of sinusoidal channels, aiming to identify correlations between vorticity structures, pressure losses, and heat transfer performance. Steady-state numerical simulations were performed using OpenFOAM (simpleFoam and scalarTransportFoam) for different corrugation amplitudes and wavelengths, and for a range of Reynolds numbers within the laminar and transitional regimes. The analysis of the vorticity field revealed the formation of recirculation regions and high-shear zones, whose intensity and frequency increase with both wall corrugation and Reynolds number. These flow structures enhance fluid mixing and heat transfer while simultaneously causing higher pressure losses. Mean and maximum vorticity were used as indicators to describe the level of flow disturbance induced by the corrugated geometry.