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The pressure distribution measured along a straight, horizontal portion of a 50-mm-diameter pipe attached to a tank is shown in the table below. Approximately how long is the entrance length? In the fully developed portion of the flow, what is the value of the wall shear stress?
a counterflowing heat exchanger cools air at 600 k 400 kpa to 320 k using a supply of water at 20degc 200 kpa. the
Air is initially at a temperature of 500 K and a pressure of 100 kPa. A process occurs so that the specific internal energy of the air increases by 200 kJ/kg (i.e. u2 - u1 = 200 kJ/kg). Modeling the air as an Ideal Gas, determine the final temperatur..
Considering all the fillets, compute the hydraulic radius for the passage, and then compute the volume flow rate of acetone at 77°F required to produce a Reynolds number for the flow of 2.6 X 104.
Calculate the magnitude of the moment acting at the build-in end and specify the orientation of the moment vector relative to the principal centroidal axes of the section with the aid of a sketch and determine the stresses at each corner of the bu..
a for a rectangular coordinate system we developed the navier stokes equation for vx. now reduce that equation to
a fluid flows through an adiabatic device. at one end the velocity is 30 ms h 320 kjkg and s 0.695 kjkg k and at the
aan 8-inch pitch diameter steel gear 3 inches thick face width is pressed onto a 2 inch diameter steel shafte30000000
a refrigerator freezer compartment is maintained at a temperature of -15degf by removing heat at a rate of 4500 btuhr.
As part of a super-critical extraction of coal, an initially evacuated cylinder is fed with steam from a line available at 20 mPa and 400 degrees C. What is the temperature in the cylinder immediately after filling? (Answer to problem is 454 degrees ..
a rigid 10m3 tank contains water initially at 120 c with 60 liquid and 40vapor by volume. a pressure-relief valve on
A particle slides freely on a flat surface, attached to a mass less string that passes through a hole in the surface. At a given moment, the particle is moving in a circle of radius r0 with angular velocity w0. Assume that the string is pulled throug..
An air-standard Diesel cycle has a compression ratio of 18.2. Air is at 27°C and 100 kpa at the beginning of the compression process and at 1700 K at the end of the heat-addition process.
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