Chapter 10, Problem 104P

Static pressure P is measured at two locations along the wall of a laminar boundary layer (Fig. 10-104). The measured pressures are P₁and P₂distance between the taps is small compared to the characteristic body dimension $\left(\Delta x=x_2-x_1\ll L\right)$. The outer flow velocity above the boundary laver at point 1 is U₁. The fluid density and viscosity are $\rho$and $\mu$ . respectively Generate an approximate expression for U₂the outer flow velocity above the boundary laver at point 2. in terms of P_1,P₂ $\Delta x$ . U₁. p. and n:.

b
FIGURE P10-104