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Experiments have shown that the transition from laminar to turbulent conditions for flow normal to the axis of a long cylinder occurs at a critical Reynolds number of ReD,c = 2 X 105, where D is the cylinder diameter. Moreover, the transition from incompressible to com- pressible flow occurs at a critical Mach number ofMac = 0.3. For air at a pressure of p = 1 atm and tem- perature T = 27°C, determine the critical cylinder diameter Dc below which, if the flow is turbulent, com- pressibility effects are likely to be important.
a rigid well-insulated tank with a volume of 3 fe contains air at p1 22 lbfin2 and t1 475 bullr. the air is stirred by
1. air is compressed by a 30 kw compressor from p1 to p2. the air temperature is maintained constant at 25 oc
the u-tube manometer has legs of unequal internal diameter d1 and d2 which are partially filled with immiscible liquids
A fireclay brick cube, 10 cm in length is removed from a furnace where it was maintained at a temperature of 500 degrees C. The brick cube is then placed in ambient temperature conditions.
a cast-iron cylinder of 300mm bore carries a pressure of 30 newtons per square millimetrewhat should be its thickness
Parallel flow of atmospheric air over a flat plate of length L = 3 m is disrupted by an array of stationary rods placed in the flow path over the plate.
A causal discrete-time LTI system is described by y [n] - fr [n - 1] + i y [n - 2] = x [n] where x [n] and y [n] are the input and output of the system, respectively.
in order to increase production rate a reactor setpoint was increased from 160 psig to 190 psig. the reactor pressure
a pelton wheel is used to produce hydroelectric power. the average radius of the wheel is 1.83 m and the jet velocity
Determine and plot the manner in which the local convection coefficient h varies with x. Evaluate the average convection coefficient h for the plate.
drag measurements were taken for a sphere with a diameter of 5 cm moving at 4ms in water at 20 degrees celsius. the
in a tensile test for an alloy used for ballistic-missile launch tubes on boomer submarines the yield strength was
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