ch04 - 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 4 4.1 x = 0.934 m 4.3 x = 747 m t = 23.9 mm 4.5 V = 87.5 km/hr 4.7 = 1.50 hr 4.9 40 94 . 6 2400 47 . 3 2 + + = h h y c ( y c , h : mm) h = 21.2 mm s 0.604 4.11 Q = 90 ft 3 /s ( ) j i A d V V 360 450 + = r r r (slugft/s/s; : slug/ft 3 ) 4.13 s m 24 3 = A d V r r ( ) ( ) 2 4 s m 60 96 64 k j i A d V V = r r r 4.15 2 max 2 1 R u Q = i R u m.f. 2 2 max 3 1 = 4.17 V = 1.56 ft/s Q = 3.82 gpm 4.19 Q cool = 489 gpm hr lb 10 45 . 2 5 cool = m & hr lb 19404 moist = m & hr lb 14331 air = m & 4.21 V 3 = (4.33 ft/s, 2.50 ft/s) 4.23 Eight pipes 4.25 1400 units/hr 4220 units/hr Outflow = 9 units/s 4.27 = 10.7 lb/ft 3 4.29 ( ) 3 sin 3 2 h g w m = & 4.31 U = 1.5 m/s 4.33 Q = 1.05 x 10 5 m 3 /s (10.45 mL/s) V ave = 0.139 m/s u max = 0.213 m/s 4.35 v min = 5.0 m/s 4.37 V oil /...
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ch04 - Introduction to Fluid Mechanics 7 th Edition Fox,...

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