Boundary Layer, Flat Plate. Water flows past a flat plate of length 2m and width 4m. If the free stream velocity is U = 0.4 m/s, and assuming a laminar boundary layer flow, use the exact Blasius results. to compute (a) the total drag force (N); (b) the boundary layer thickness at the trailing edge (SL); (c) If a pitot stagnation tube is placed at x = L/2 at y = 0.4 6L and assuming P = 1 atm - constant throughout the BL, what "h" would the manometer read?; (d) the value of the vertical velocity v (m/s) at x = L/2 at y = 0.4 6L; (e) at what distance down the plate would the flow have become turbulent?; (f) repeat part "a" for the total shear force if the plate is rotated such that L = 4m and W = 2m? Ans OM: (a) FD ~ 10¹ N; (b) 8L ~ 10-² m; (c) h~ 10⁰ mm; (d) v~ 104 m/s; (e) XL-T~ 10⁰ m; (f) FD ~ 10-¹ N df dn 0.62977 0.68131 0.72898 0.77245 0.81151 0.84604 n 2.0 2.2 2.4 2.6 2.8 3.0 f 0.65002 0.78119 0.92229 1.07250 1.23098 1.39681

Boundary Layer, Flat Plate. Water flows past a flat plate of length 2m and width 4m. If the free stream velocity is U = 0.4 m/s, and assuming a laminar boundary layer flow, use the exact Blasius results. to compute (a) the total drag force (N); (b) the boundary layer thickness at the trailing edge (SL); (c) If a pitot stagnation tube is placed at x = L/2 at y = 0.4 6L and assuming P = 1 atm - constant throughout the BL, what "h" would the manometer read?; (d) the value of the vertical velocity v (m/s) at x = L/2 at y = 0.4 6L; (e) at what distance down the plate would the flow have become turbulent?; (f) repeat part "a" for the total shear force if the plate is rotated such that L = 4m and W = 2m? Ans OM: (a) FD ~ 10¹ N; (b) 8L ~ 10-² m; (c) h~ 10⁰ mm; (d) v~ 104 m/s; (e) XL-T~ 10⁰ m; (f) FD ~ 10-¹ N df dn 0.62977 0.68131 0.72898 0.77245 0.81151 0.84604 n 2.0 2.2 2.4 2.6 2.8 3.0 f 0.65002 0.78119 0.92229 1.07250 1.23098 1.39681

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.34P

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