Air at 101.3 kPa and 293 K is flowing past a smooth, flat plate at 100 ft/s. The turbulence in the air stream is such that the transition from a laminar to a turbulent boundary layer occurs at NRe,L = 5 × 105. a. Calculate the distance from the leading edge where the transition occure b. Calculate the boundary layer thickness 8 at distance of 0.5 ft and 3.0 ft from the leading edge. Note: derive an Eqns. which is used in your answer with suitable assumptions. Assume the density=0.0754 1bm/ft³ and the viscosity =1.223*105 1bm/ft.s T

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
Question
Air at 101.3 kPa and 293 K is flowing past a smooth, flat plate at 100 ft/s. The
turbulence in the air stream is such that the transition from a laminar to a turbulent boundary layer
occurs at NRe,L = 5 × 105.
a. Calculate the distance from the leading edge where the transition occure
b. Calculate the boundary layer thickness 8 at distance of 0.5 ft and 3.0 ft from the leading
edge. Note: derive an Eqns. which is used in your answer with suitable assumptions.
Assume the density=0.0754 1bm/ft³ and the viscosity =1.223*105 1bm/ft.s
T
Transcribed Image Text:Air at 101.3 kPa and 293 K is flowing past a smooth, flat plate at 100 ft/s. The turbulence in the air stream is such that the transition from a laminar to a turbulent boundary layer occurs at NRe,L = 5 × 105. a. Calculate the distance from the leading edge where the transition occure b. Calculate the boundary layer thickness 8 at distance of 0.5 ft and 3.0 ft from the leading edge. Note: derive an Eqns. which is used in your answer with suitable assumptions. Assume the density=0.0754 1bm/ft³ and the viscosity =1.223*105 1bm/ft.s T
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