3. Consider steady, incompressible, parallel, laminar flow of viscous fluid falling between two
infinite vertical walls as can be seen in the figure. The distance between the walls is h, and
gravity acts in the negative z-direction (downward in the figure). There is no applied (forced)
pressure driving the flow. In other words, the fluid falls by gravity alone. The pressure is
constant everywhere in the flow field. Calculate the velocity distribution.
Fixed
wall
Fluid:
ρ. μ
Fixed
wall
h