Consider the velocity boundary layer profile for flow over u flat plate to be of the form u = C_1 + C_2 y. Applying appropriate
boundary conditions, obtain an expression for the velocity profile in terms of the boundary layer thickness delta and the free stream velocity Using the integral form of the boundary layer momentum equation (Appendix G). obtain expressions for the boundary layer thickness and the local friction coefficient, expressing your result in terms of the local Reynolds number. Compare your results with those obtained from the exact solution (Section 7.2.11 and the integral solution with a cubic profile (Appendix G).
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Answer:
555.936 kg
Explanation:
h = Length of pipe = 4 m
r = Inside radius =130 mm
R = Outside radius = 150mm
Volume of the cylinder
v = πR²h - πr²h
⇒v = πh(R²-r²)
⇒v = π4(0.15²-0.13²)
⇒v = 0.0704 m³
Density of steel varies between 7,750 and 8,050 kg/m³
So, let us take the average of the two values so we get density of steel as 7900 kg/m³ as the exact density is not given
Density
So, approximate mass of the steel pipe is 555.936 kg