Problem 5(a) - Terminal Velocity of Falling Particles
f(vt)=vt^2*(3*CD*rho)-4*g*(rhop-rho)*Dp
rho=994.6
g=9.80665
rhop=1800
Dp=0.208e-3
vis=8.931e-4
Re=Dp*vt*rho/vis
CD=if (Re<0.1) then (24/Re) else (24*(1+0.14*Re^0.7)/Re)
vt(min)=0.0001, vt(max)=0.05