An incompressible Newtonian fluid is flowing in the

z

direction in a square duct bounded by the surfaces

x=+-H

and

y=+-H

. It has been suggested that the velocity of the fluid in the duct is given by:\

v_(x)=v_(y)=0\ v_(z)=((p_(0)-p_(L)))/(4\\\\mu L)[1-((x)/(H))^(2)][1-((y)/(H))^(2)]

2. An incompressible Newtonian fluid is flowing in the z direction in a square duct bounded by the surfaces x=H and y=H. It has been suggested that the velocity of the fluid in the duct is given by: vx=vy=0vz=4L(p0pL)[1(Hx)2][1(Hy)2]