Table 73 Drag of Three-Dimensional Bodies al Re= 10 C, baed on frental ara Bady G hamd on fretal ara Bedy Ca Cabe e: 10F | 20 | 30 | 40 | | 19 | 9 L07 Shori eylinkr, lanina low LID: |1 |2 |3 5 |10 | 20 | 40 |= Cap 14 Poen parabolic diah 23 Porssity: 0 E 12 133 120 105 0.95 O2 04 0.1 02 03 04 0s Averge per L17 - GA:9R tca-120 Parhute Low panityk 12 Piand apra 10 20 |12:02 |10102 0.7 202 05 102 30 Strnlied inin apprsimakcly S anl: Tacke iraikr ind: Wihout delfleckar: 0.M; with delecker 0.6 Hicyde Co haed en frantal ar Co haed on frontal ar Body Recangalar plae Ratie Bedy Falad cylinkr Ratio LIE 12 10 20 13 15 20 1.15 090 Laminar Turbalent Hlipeid 02 02 Beoyant rining sphere |301. 135 < Rey < IES 047 027 025 02 0.13 0.1

Table 73 Drag of Three-Dimensional Bodies al Re= 10 C, baed on frental ara Bady G hamd on fretal ara Bedy Ca Cabe e: 10F | 20 | 30 | 40 | | 19 | 9 L07 Shori eylinkr, lanina low LID: |1 |2 |3 5 |10 | 20 | 40 |= Cap 14 Poen parabolic diah 23 Porssity: 0 E 12 133 120 105 0.95 O2 04 0.1 02 03 04 0s Averge per L17 - GA:9R tca-120 Parhute Low panityk 12 Piand apra 10 20 |12:02 |10102 0.7 202 05 102 30 Strnlied inin apprsimakcly S anl: Tacke iraikr ind: Wihout delfleckar: 0.M; with delecker 0.6 Hicyde Co haed en frantal ar Co haed on frontal ar Body Recangalar plae Ratie Bedy Falad cylinkr Ratio LIE 12 10 20 13 15 20 1.15 090 Laminar Turbalent Hlipeid 02 02 Beoyant rining sphere |301. 135 < Rey < IES 047 027 025 02 0.13 0.1

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.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.29P: Air at 20C flows at 1 m/s between two parallel flat plates spaced 5 cm apart. Estimate the distance...

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Some engineers want a good estimate of drag and boundary-layerthickness at the trailing edge of a miniature wing. The chord and span ofthe wing are 6 mm and 30 mm, respectively and a typical flight speed is5 m/s in air (kinematic viscosity = 15 × 10−6 m2/s; density = 1.2kg/m3). An engineer may decide to make a superseding model withchord and span of 150 mm and 750 mm, respectively. Measurements onthe model in a water channel flowing at 0.5 m/s (kinematic viscosity = 1× 10−6 m2/s, density = 1000 kg/m3) give a drag of 0.19 N and aboundary-layer thickness of 3 mm. Estimate the corresponding values forthe prototype
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For creeping flow over a three-dimensional object, the aerodynamic drag on the object does not depend on (a) Velocity, V (b) Fluid viscosity, ? (c) Characteristic length, L (d ) Fluid density, ? (e) None of these
Baseball drag data from the University of Texas are shownin Fig. A baseball weighs approximately 5.12ounces and has a diameter of 2.91 in. Hall-of-Famer NolanRyan, in a 1974 game, threw the fastest pitch ever recorded:108.1 mi/h. If it is 60 ft from Nolan’s hand to the catcher’smitt, estimate the sea-level ball velocity which the catcherexperiences for (a) a normal baseball, and (b) a perfectlysmooth baseball.
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The helium-filled balloon in Fig. is tethered at 20°Cand 1 atm with a string of negligible weight and drag. Thediameter is 50 cm, and the balloon material weighs 0.2 N,not including the helium. The helium pressure is 120 kPa.Estimate the tilt angle θ if the airstream velocity U is (a) 5 m/sor (b) 20 m/s.
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