P7.101 Icebergs can be driven at substantial speeds by the wind. Let the iceberg be idealized as a large, flat cylinder, D >> L, with one-eighth of its bulk exposed, as in Fig. P7.101. Let the seawater be at rest. If the upper and lower drag forces depend upon relative velocities between the berg and the fluid, derive an approximate expression for the steady iceberg speed V when driven by wind velocity U.

P7.101 Icebergs can be driven at substantial speeds by the wind. Let the iceberg be idealized as a large, flat cylinder, D >> L, with one-eighth of its bulk exposed, as in Fig. P7.101. Let the seawater be at rest. If the upper and lower drag forces depend upon relative velocities between the berg and the fluid, derive an approximate expression for the steady iceberg speed V when driven by wind velocity U.

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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Icebergs can be driven at substantial speeds by the wind.Let the iceberg be idealized as a large, flat cylinder, D >> L,with one-eighth of its bulk exposed, as in Fig.. Letthe seawater be at rest. If the upper and lower drag forcesdepend on relative velocities between the iceberg and thefluid, derive an approximate expression for the steady icebergspeed V when driven by wind velocity U.
Fluid Mechanics problem: A pickup truck has a clean drag area CDA of 35 ft2.Estimate the horsepower required to drive the truck at55 mi/h (a) clean and (b) with the 3- by 6-ft sign inFig. P7.88 installed if the rolling resistance is 150 lbfat sea level. Note: Power = Drag x velocity, Use Table 7.3 for drag coefficient for sign.
The parachute in the chapter-opener photo is, of course,meant to decelerate the payload on Mars. The wind tunneltest gave a drag coefficient of about 1.1, based upon theprojected area of the parachute. Suppose it was falling onearth and, at an altitude of 1000 m, showed a steady descentrate of about 18 mi/h. Estimate the weight of the payload.
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H4
Aerodynamics NACA 747A415, chord is 180 cm 1) What is the location of favorable pressure gradient of the upper surface, measured from LE? 2) What is the location favorable pressure gradient of the upper surface, measured from TE?