Viscosity Is Not What Kills a Vortex — Newton's 1/r and the Lamb–Oseen Core
·8 min read
At r=0.5 the speed is unchanged to four decimals after 50 diffusion times. At n=1 the viscous force is zero; only a wall removes circulation.
At r=0.5 the speed is unchanged to four decimals after 50 diffusion times. At n=1 the viscous force is zero; only a wall removes circulation.