Consider two cases involving parallel flow of dry air at V = 3 m/s, T = 45°C, and atmospheric pressure over an isothermal plate at T, = 20°C. In the first case, Rex = 5 x 105, while in the second case the flow is tripped to a turbulent state at x = 0 m. At what x-location, in m, are the thermal boundary layer thicknesses of the two cases equal? What are the local heat fluxes, in W/m², at this location for the two cases? x = d'am qturb || = i i i 3 W/m² W/m²
Consider two cases involving parallel flow of dry air at V = 3 m/s, T = 45°C, and atmospheric pressure over an isothermal plate at T, = 20°C. In the first case, Rex = 5 x 105, while in the second case the flow is tripped to a turbulent state at x = 0 m. At what x-location, in m, are the thermal boundary layer thicknesses of the two cases equal? What are the local heat fluxes, in W/m², at this location for the two cases? x = d'am qturb || = i i i 3 W/m² W/m²
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 5.31P
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![Consider two cases involving parallel flow of dry air at V = 3 m/s, T = 45°C, and atmospheric pressure over an isothermal plate
at T = 20°C. In the first case, Rex = 5 x 105, while in the second case the flow is tripped to a turbulent state at x = 0 m. At what
x-location, in m, are the thermal boundary layer thicknesses of the two cases equal? What are the local heat fluxes, in W/m², at this
location for the two cases?
x =
91am =
qurb
=
i
i
m
W/m²
W/m²](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F26f469f3-1bb4-4c71-8ad3-c4171c720471%2F43c21af1-15fa-44fe-af98-12fc82fad3ff%2Fh2ru6ut_processed.png&w=3840&q=75)
Transcribed Image Text:Consider two cases involving parallel flow of dry air at V = 3 m/s, T = 45°C, and atmospheric pressure over an isothermal plate
at T = 20°C. In the first case, Rex = 5 x 105, while in the second case the flow is tripped to a turbulent state at x = 0 m. At what
x-location, in m, are the thermal boundary layer thicknesses of the two cases equal? What are the local heat fluxes, in W/m², at this
location for the two cases?
x =
91am =
qurb
=
i
i
m
W/m²
W/m²
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