Atmospheric boundary layers can be estimated using turbulent flow approximations over a flat-plate and the velocity profile given for the ‘Turbulent Core’ applies across the entire boundary layer. Assume the wind is blowing at 10 m/s at a height of 80 m above a smooth and flat beach. Air temperature can be assumed to be 20oC. (a) Estimate the shear stress produced by the wind on the beach surface in Pa if the air is at standard sea-level conditions. (b) Determine the wind velocity striking your nose if you are standing and your nose is 170 cm off the ground. (c) Determine the wind velocity striking your nose if you are lying on the beach and your nose is 17 cm off the ground?

Atmospheric boundary layers can be estimated using turbulent flow approximations over a flat-plate and the velocity profile given for the ‘Turbulent Core’ applies across the entire boundary layer. Assume the wind is blowing at 10 m/s at a height of 80 m above a smooth and flat beach. Air temperature can be assumed to be 20oC. (a) Estimate the shear stress produced by the wind on the beach surface in Pa if the air is at standard sea-level conditions. (b) Determine the wind velocity striking your nose if you are standing and your nose is 170 cm off the ground. (c) Determine the wind velocity striking your nose if you are lying on the beach and your nose is 17 cm off the ground?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.30P: Air at 1000C flows at an inlet velocity of 2 m/s between two parallel flat plates spaced 1 cm apart....

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(a) Estimate the shear stress produced by the wind on the beach surface in Pa if the air is at standard sea-level conditions.

(b) Determine the wind velocity striking your nose if you are standing and your nose is 170 cm off the ground.

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