1. Engineering
  2. Mechanical Engineering
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Problem 3. Consider a viscous film of liquid draining uniformly down the side of a vertical rod of radius a, as shown in the figure. At some distance down the rod the film will approach a terminal or fully developed draining flow of constant outer radius b, with vz - vz(r), ve 0 Assume that the atmosphere offers no shear resistance to the film motion. Derive a differential equation for vz, state the proper boundary conditions, and solve for the film velocity distribution. How does the film radius b relate to the total film volume flow rate Q? 0 Pa a 0 Fully developed region Film

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