Slight wind of 2.2 m/s is moving over a human cheek of length .05m and is...

Slight wind of 2.2 m/s is moving over a human cheek of length .05m and is causing the skin to lose water. What is the thickness of the mass transfer boundary layer at half of the distance (0.025m) from the edge of the cheek surface over which this water loss is taking place? The viscosity of air can be assumed as 1.85*10-5 Pa.s, density of air is 1.2 kg/m3 and the diffusity of water vapor in air is 2.6*10-4 m2 /s. Temperature is 37C

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Amanda K answered 3 months ago

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