Velocity profile for film of liquid flowing vertical wall

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Reference no: EM13703893

The velocity profile for a film of liquid flowing down a vertical wall is given by

U = (?g/?)·(Lx – 0.5x2)

Where L is the thickness of the film, u is the downward velocity, xis the distance perpendicular to the wall and are the liquid density and viscosity.

• Sketch the velocity profile.

• Show that the average velocity is 2/3 the maximum velocity.

• Find the volume flow rate for a layer of water 5 cm thick flowing down a wall 200 cm wide at a temperature of 45^oC.

Reference no: EM13703893

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