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The flow of oil in a journal bearing can be approximated as parallel flow betweentwo large plates with one plate moving and the other stationary. Suchflows are known as Couette flow.
Consider two large isothermal plates separated by 2-mm-thick oil film. The upper plates moves at a constant velocity of 12 m/s, while the lower plate is stationary. Both plates are maintained at 20°C.
(a) Obtain relations for the velocity and temperature distributions in the oil.
(b) Determine the maximum temperature in the oil and the heat flux from the oil to each plate
An inventor claims to have developed a heat pump that produces a 200kW heating effect for a 20 degree Celsius heated zone while using 75 kW of power. The heat pump operates steadily in an environment at 0 degrees Celsius.
a flowrate measuring device is installed in a horizontal pipe through which water is flowing. a u-tube manometer is
an air conditioner can produce a 120 kjmin cooling effect while rejecting 2.5kw of heat. what is its cop and the
a long slab is heated to 100oc on both sides and then exposed to a focused stream of cold air on the top edge - giving
Determine the maximum speed at which the car with mass can pass over the top point A of the vertical curved road and still maintain contact with the road.
For an assembly line, you need to design a linkage that moves a point P in approximately a straight line over a distance of 24” in one second. It is also specified that P must return from the endpoint back to the starting point in five seconds, givin..
it is desired to put oil hole through a part subjected to a stress field given by sigma xx 15 ksi sigma yy -15 ksi
air enters the compressor of an air-standard brayton cycle with a volumetric flow rate of 60 m3s at 0.8 bar 280 k. the
a closed system contains 0.2 kg of air is used to execute a power carnot cycle between temperature limits of 315 k and
a 2500 lb car moving with a velocity of 3 mih hits a garage wall and is brought to rest in 0.05 s . determine the
Compute the horizontal and vertical forces exerted on the vane shown in Fig. 16.14 due to a flow of water at 50°C. The velocity is constant at 15 m/s.
a cold-drawn aisi 1018 steel bar similar to the component shown in the diagram of table a- 15-1 is subjected to an
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