Viscosity variation and velocity gradients in a non isothermal film, water is falling down a vertical wall
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Viscosity variation and velocity gradients in a non isothermal film, water is falling down a vertical wall in a film 0.1 mm thick. The water temperature is 100°C at the free liquid surface and 80°C at the wall surface.
(a) Show that the maximum fractional deviation between viscosities predicted by Eqs. 11.417 and 18 occurs when T = √T_{0}T_{δ}.
(b) Calculate the maximum fractional deviation for the conditions given.
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