A study of various factors affecting Newtonian extrudate swell

► Complete extrudate swell results for Newtonian fluids for a range of fluid mechanics parameters. ► The effects of Reynolds, Stokes, capillary numbers, slip at the wall, pressure-dependence of viscosity are studied. ► Detailed results are given for the swell ratio and the pressure drop in the system. ► Benchmark numerical results are given numerically for Ca effect. ► The effect of all parameters is explained in physical terms.