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An idealized incompressible flow has the proposed three-dimensional velocity distribution
An incompressible flow field has the cylinder components ?? = Cr, ? z = K (R2 - r2), ?r = 0, where C and K are constants and r = R, z = L.
Apply the analysis of Prob. 6.54 to the following data. Let W = 5 m, Y = 8 m, ho =2 m, L = 15 m, D = 5 cm, and e = 0. (a) By letting h = 1.5 m and 0.5 m
An aluminum cylinder (SG = 2.7) slides concentrically down a taut 1-mmdiameter wire as shown in the figure. Its length is L = 8 cm and its radius R = 1 cm.
An auto has m = 1000 kg and a drag-area CDA = 0.7 m2, plus constant 70-N rolling resistance. The car coasts without brakes at 90 km/h climbing a hill
An average table tennis ball has a diameter of 3.81 cm and a mass of 2.6 gm. Estimate the (small) depth h at which the ball will float in water at 20°C
An air-hockey puck has m = 50 g and D = 9 cm. When placed on a 20°C air table, the blower forms a 0.12-mm-thick air film under the puck.
An asphalt circular channel, of diameter 75 cm, is flowing half-full at an average velocity of 3.4 m/s. Estimate
An annulus of narrow clearance causes a very large pressure drop and is useful as an accurate measurement of viscosity
An American 6-ft diameter multiblade HAWT is used to pump water to a height of 10 ft through 3-in-diameter cast-iron pipe.
An airplane, of overall length 55 ft, is designed to fly at 680 m/s at 8000-m standard altitude. A one-thirtieth-scale model is to be tested in a pressurized
An airplane weighs 180 kN and has a wing area of 160 m2 and a mean chord of 4 m. The airfoil properties are given
An airplane weighing 28 kN, with a drag-area CDA = 5 m2, lands at sea level at 55 m/s and deploys a drag parachute 3 m in diameter. No other brakes are applied.
An airplane has a mass of 5000 kg, a maximum thrust of 7000 N, and a rectangular wing with aspect ratio 6.0. It takes off at sea level with a 60° split flap
An engineer makes careful measurements with a weir (see Sect. 10.7 later) which monitors a rectangular unfinished concrete channel laid on a slope of 1
An East Coast estuary has a tidal period of 12.42 h (the semidiurnal lunar tide) and tidal currents of approximately 80 cm/s.
An axial-flow pump delivers 40 ft3/s of air which enters at 20°C and 1 atm. The flow passage has a 10-in outer radius and an 8-in inner radius.
An axial-flow fan operates in sea level air at 1200 r/min and has a blade-tip diameter of 1 m and a root diameter of 80 cm.
An automobile has a characteristic length and area of 8 ft and 60 ft2, respectively. When tested in sea-level standard air, it has the following measured
An atomic explosion propagates into still air at 14.7 psia and 520°R. The pressure just inside the shock is 5000 psia. Assuming k = 1.4, what are the speed
Air flows past a two-dimensional wedge-nosed body as in Fig. P9.128. Determine the wedge half-angle d for which the horizontal component
Air flows steadily from a reservoir at 20°C through a nozzle of exit area 20 cm2 and strikes a vertical plate as in the flow is subsonic throughout.
Air flows through a 6-cm-diameter smooth pipe which has a 2 m-long perforated section containing 500 holes (diameter 1 mm), as in Fig.
Air flows through a converging diverging nozzle between two large reservoirs, as in Fig. P9.65. A mercury manometer reads h = 15 cm.
Air flows through a duct as in Fig, where A1 = 24 cm2, A2 = 18 cm2, and A3 = 32 cm2. A normal shock stands at section 2. Compute