- Pr 4 25 Pt Air At 20degc And 1 Atm Flows Over A Plate As Shown Below The Incoming Freestream Velocity U0 20 M S Th 1 (70.34 KiB) Viewed 16 times
Pr 4: (25 pt) Air at 20degC and 1 atm flows over a plate as shown below. The incoming freestream velocity U0=20 m/s. The boundary layer is turbulent throughout the entire length and is well represented by the 1/7th power expression. The length of the plate, L=1.5 m, and the width b=0.8 m. Using Eqns, 7.42, 7.43, and 7.44: (a) (8 pt) Compute the boundary layer thickness, δ at the trailing edge of the plate in mm. (b) (8 pt) Compute the wall shear stress, τw, at the trailing edge of the plate in Pa. (c) (9 pt) Compute the friction drag force on the plate in N. Table A.2 Viscosity and Density of Air al 1 atm Suadestert courve fife for air