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For those who think electric cars are sissy, Keio University in Japan has tested a 22-ft long prototype whose eight electric motors generate a total of 590
From the Navier-Stokes equations for incompressible flow in polar coordinates for cylindrical coordinates, find the most general case of purely circulating
For what uniform rotation rate in r/min about axis C will the U-tube fluid in Fig. take the position shown? The fluid is mercury at 20°C
Plot some streamlines for the combination of a counterclockwise line vertex K at (x, y) = (+a, 0) and an equal line vertex placed at (-a, 0). You must provide
Find the stream function and plot some streamlines for the combination of a line source m at (x, y) = (0, +a) and an equal line source placed
Find the stream function and plot some streamlines for the combination of a line source 2m at (x, y) = (+a, 0) and a line source m at (-a, 0).
Flow straighteners are arrays of narrow ducts placed in wind tunnels to remove swirl and other in-plane secondary velocities.
For flow past a cylinder of radius R as in Fig. the theoretical inviscid velocity distribution along the surface is U = 2Uosin(x/R), where Uo is the oncoming
Flow through the converging nozzle in Fig. can be approximated by the one-dimensional velocity distribution u ˜ Vo (1 + 2x/L) v ˜ 0 w˜ 0
For straightening and smoothing airflow in a 50-cm-diameter duct, the duct is packed with a ?ohoneycomb?? of thin straws of length 30 cm and diameter 4 mm
For the 20°C water flow of Fig. use the pitot-static arrangement to estimate
For the 40°C water flow in Fig estimate the volume flow through the pipe, assuming no losses; then explain what is wrong with this seemingly innocent
For the cone-plate viscometer in Fig the angle is very small, and the gap is filled with test liquid µ
For the configuration shown in Fig the fluid is ethyl alcohol at 20°C, and the tanks are very wide. Find the flow rate which occurs in m3/h.
For the container of Fig use Bernoulli's equation to derive a formula for the distance X where the free jet leaving horizontally will strike the floor
For the elbow duct in Fig SAE 30 oil at 20°C enters section 1 at 350 N/s, where the flow is laminar, and exits at section 2, where the flow is turbulent
For flow of air through a normal shock, the upstream conditions are V1 = 600 m/s, To1 = 500 K, and po1 = 700 kPa. Compute the downstream conditions
For low-speed (laminar) flow in a tube of radius ro, the velocity u takes the form u = B ?p/µ (r2- r2) Where µ is viscosity and ?p the pressure drop.
Ethanol at 20°C flows at 125 U.S. gal/min through a horizontal cast-iron pipe with L = 12 m and d = 5 cm. Neglecting entrance effects, estimate
Ethanol at 20°C flows down through a modern venturi nozzle as in Fig. if the mercury manometer reading is 4 in, as shown, estimate the flow rate
Ethyl alcohol at 20°C flows through a 10-cm horizontal drawn tube 100 m long. The fully developed wall shear stress is 14 Pa. Estimate (a) the pressure drop
Ethyl alcohol at 20°C, flowing in a 6-cm-diameter pipe, is metered through a 3-cm-diameter long-radius flow nozzle
Figure simulates a manifold flow, with fluid removed from a porous wall or perforated section of pipe
Find a formula for the stream function for flow of a doublet of strength ? at a distance a from a wall, as in Fig.
Dam ABC in Fig. is 30 m wide into the paper and is concrete (SG ˜ 2.40). Find the hydrostatic force on surface AB and its moment about C.