# ch09 - Introduction to Fluid Mechanics 7 th Edition Fox,...

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Unformatted text preview: Introduction to Fluid Mechanics 7 th Edition Fox, Pritchard, & McDonald Answers to Selected Problems, Chapter 9 9.1 x p = 18.6 cm x m = 10.3 mm 9.3 x p = 10.4 cm x p = 7.47 mm 9.5 Re D = 1 (reasonable) Re D = 2.5 x 10 5 (not reasonable) Use water and D = 10 cm 9.7 L increases with elevation 9.9 A = U δ π 2 = B C = 0 9.11 375 . * = δ δ 139 . = δ θ 9.13 396 . * = δ δ 152 . = δ θ 9.15 Linear: 167 . = δ θ Sinusoidal: 137 . = δ θ Parabolic: 133 . = δ θ 9.17 Power: 125 . * = δ δ , 0972 . = δ θ Parabolic: 333 . * = δ δ , 133 . = δ θ 9.19 s kg 4 . 50 = ab m & F D = 50.4 N 9.21 d exit = 3.13 mm Δ U = 3.91% 9.23 U 2 = 13.8 m/s Δ p = 20.6 Pa 9.25 Δ p = – 1.16 lbf/ft 2 9.27 U 2 = 24.6 m/s p 2 = – 44.5 mm H 2 O 9.29 * 2 δ = 2.54 mm Δ p = – 107 Pa F D = 2.00 N 9.35 y = 0.121 in dy / dx = 0.00326 x w U Re 3321 . 2 ρ τ = L D bL U F Re 6642 . 2 ρ = θ L = 0.0454 in 9.39 θ L = 0.0454 in F D = 0.850 N 9.41 F D = 26.3 N F D = 45.5 N 9.43 F D = 8.40 x 10 –4 N (or F D...
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## This note was uploaded on 09/08/2010 for the course AME 331 taught by Professor Zohar during the Spring '08 term at University of Arizona- Tucson.

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ch09 - Introduction to Fluid Mechanics 7 th Edition Fox,...

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