Water flows steadily past a porous flat plate. Constant suction is applied along the porous section. The velocity profile at section \(c d\) is \(\frac{u}{U_{\infty}}=3\left[\frac{y}{\delta}\right]-2\left[\frac{y}{\delta}\right]^{3 / 2}\)

Evaluate the mass flow rate across section \(b c\).

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x U = 3 m/s b d V = -0.2 mm/s L= 2 m P4.42 8=1.5 mm Width, w= 1.5 m