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Air at temperature 20 C and pressure 1 atm, flow over a flat plate at 3 m/s. The surface temperature of the plate 60 C and the plate width w 20 cm at distance 30 cm from the leading edge Determine the following.1. Thickness of velocity boundary layer.2. Thickness of thermal boundary.3. Local heat transfer

Air at temperature 20 C and pressure 1 atm, flow over a flat plate at 3 m/s. The surface temperature of the plate 60 C and the plate width w 20 cm at distance 30 cm from the leading edge Determine the following.1. Thickness of velocity boundary layer.2. Thickness of thermal boundary.3. Local heat transfer

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Air at temperature 20 C and pressure 1 atm, flow over a flat plate at 3 m/s. The surface temperature of the plate 60 C and the plate width w 20 cm at distance 30 cm from the leading edge Determine the following.1. Thickness of velocity boundary layer.2. Thickness of thermal boundary.3. Local heat transfer coefficient.4. Average heat transfer coefficient.5. Local friction coefficient.6. Average friction coefficient.7. Local shear stress.8. Average shear stress.9. The drag force.10. Total heat transfer rate.11. The local temperature at y=2mm from the surface.12. The local velocity at y=2mm from the surface.13. If the air flows with shortest dimension (width) at velocity u and, If ql=qw, find u by assume combined flow.Take the air properties as following, H=2.02x10-5 kg/m.s, k%3D0.0292 W/m.C, Cp=1.01 kJ/kg.C,:p = 1.128 kg/ m3
Transcribed Image Text:Air at temperature 20 C and pressure 1 atm, flow over a flat plate at 3 m/s. The surface temperature of the plate 60 C and the plate width w 20 cm at distance 30 cm from the leading edge Determine the following.1. Thickness of velocity boundary layer.2. Thickness of thermal boundary.3. Local heat transfer coefficient.4. Average heat transfer coefficient.5. Local friction coefficient.6. Average friction coefficient.7. Local shear stress.8. Average shear stress.9. The drag force.10. Total heat transfer rate.11. The local temperature at y=2mm from the surface.12. The local velocity at y=2mm from the surface.13. If the air flows with shortest dimension (width) at velocity u and, If ql=qw, find u by assume combined flow.Take the air properties as following, H=2.02x10-5 kg/m.s, k%3D0.0292 W/m.C, Cp=1.01 kJ/kg.C,:p = 1.128 kg/ m3
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