a. What is a favorable pressure gradient? What is an adverse pressure gradient? b. What is boundary layer separation? Explain underlying physics. c. For a given fluid and free-stream velocity U, compare the velocity profiles in a laminar boundary layer and a turbulent boundary layer. Sketch the velocity profiles (time-averaged for turbulent flow) and point out the key features of the two flows. d. The turbulent boundary layer has greater momentum near the wall than the laminar boundary layer. Briefly explain why. What is the implication of this greater momentum on boundary layer separation?
a. What is a favorable pressure gradient? What is an adverse pressure gradient? b. What is boundary layer separation? Explain underlying physics. c. For a given fluid and free-stream velocity U, compare the velocity profiles in a laminar boundary layer and a turbulent boundary layer. Sketch the velocity profiles (time-averaged for turbulent flow) and point out the key features of the two flows. d. The turbulent boundary layer has greater momentum near the wall than the laminar boundary layer. Briefly explain why. What is the implication of this greater momentum on boundary layer separation?
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 5.29P: Air at 20C flows at 1 m/s between two parallel flat plates spaced 5 cm apart. Estimate the distance...
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