Hi all,
I am new to comsol, I tried creating a 2 dimensional fow study using laminar flow physics, My rectangular geometry is like this width=30cm height=2cm used prameters: Density of air=1.2 kg/m^3, Dynamic viscosity=0.0000182 At inlet Pentr=0.02pa, Lentr=0m At oulet Pexit=0pa, Lexit=0m So, when I plot the parabolic velocity profile, the magnitudes of velocity is exactly 'double' to when I calculate it using following equation. u=((Pentr-Pexit)/0.30x4x0.0000182)x(0.01^2 - (0.01-y)^2) where, y changes from 0-0.02 cm What am I doing wrong?