Question B2: A thin film of liquid (density p, kinematic viscosity µ) is entrained up a flat conveyor belt as shown in F

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Question B2 A Thin Film Of Liquid Density P Kinematic Viscosity U Is Entrained Up A Flat Conveyor Belt As Shown In F 1 (85.61 KiB) Viewed 31 times

Question B2: A thin film of liquid (density p, kinematic viscosity µ) is entrained up a flat conveyor belt as shown in Fig. B2. The belt is inclined at an angle 0, relative to the horizontal, and is moving up at a constant speed Up. The film is exposed to air and the stress at the air-liquid interface is assumed negligible. The pressure along the film surface is atmospheric and constant. If the film thickness, 8, is constant, determine: (a) The velocity profile in the film and the boundary conditions on the velocity field. (b) The shear stress acting on the belt. (c) The minimum speed Up such that the net mass flow rate in the film is up along the belt. It is assumed that the liquid wets the belt, that 8 is small relative to the belt dimensions and that the belt is non-porous. 8 8 film belt Figure B2: Inclined belt drawing a thin liquid film.