c) When the fluid is heated to 90°C, the density drops slightly and the viscosity decreases a lot, and engineers observe that the equation, T₁ = 0.0644pU² becomes less accurate. Explain why this might occur (1-2 sentences).

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Question 4
du
Water flows past a flat plate that has a length L = 5 m and a width w = 2 m, as shown in
Figure Q4. The shear stress at the wall is given by Tw = μ- When the flow is laminar the
shear stress at the wall is given by the equation:
dy
Tw = 0.0644 PU²
The viscosity of water is μ = 1 mPa.s.
8(x) = 5
-
Where p = 1000 kg/m³ is the water density and U.. = 5 m/s is the velocity of the water.
The height of the boundary layer is 8, and can be approximated by
μx
puo
X
1
Transcribed Image Text:Question 4 du Water flows past a flat plate that has a length L = 5 m and a width w = 2 m, as shown in Figure Q4. The shear stress at the wall is given by Tw = μ- When the flow is laminar the shear stress at the wall is given by the equation: dy Tw = 0.0644 PU² The viscosity of water is μ = 1 mPa.s. 8(x) = 5 - Where p = 1000 kg/m³ is the water density and U.. = 5 m/s is the velocity of the water. The height of the boundary layer is 8, and can be approximated by μx puo X 1
c) When the fluid is heated to 90°C, the density drops slightly and the viscosity
decreases a lot, and engineers observe that the equation, t = 0.0644pU²
becomes less accurate. Explain why this might occur (1-2 sentences).
Transcribed Image Text:c) When the fluid is heated to 90°C, the density drops slightly and the viscosity decreases a lot, and engineers observe that the equation, t = 0.0644pU² becomes less accurate. Explain why this might occur (1-2 sentences).
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