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Consider the composite wall of Problem 2.53. In part (d), you are asked to sketch the temperature histories at x 0, L during the transient period between cases 2 and 3. Calculate and plot these histories using the finite-element method of FEHT, the finite-difference method of IHT (with ?x = 5 mm and ?t = 1.2 s), and/or an alternative procedure of your choice. If you use more than one method, compare the respective results. Note that, in using FEHT or IHT, a look-up table must be created for prescribing the variation of the heater flux with time (see the appropriate Help section for guidance).
a locomotive car of mass 2000 kg traveling at a velocity v10msec is stopped at the end of tracks by a spring-damper
Find the final volume and pressure and the work and heat transfer in the process.
Determine (a) the ratio of the mass flow rates of the two streams and (b) the rate of exergy destruction, in Btu per lb of steam entering the heat exchanger.
An insulated rigid tank is divided into two equal parts initially by a partition. Initially, one part contains 5 kg of air at 800 kPa and 75° C and the other part is evacuated. The partition is now removed and the air expands into the entire tank. De..
a force f 12t where t is in seconds is applied to a 2kg box at rest on a horizontal surface uk .3 for 5 seconds.
An object whose mass is 300 lb experience changes in its kinetic and potential energies owing to the action of a resultant force R. the work done on the object by the resultant force is 140 Btu. There are no other interactions between the object a..
Design process: description of rationale for all designer selected conditions, e.g., if reheat should be included and why, and at what pressure.
what four processes make up the ideal otto cycle? what is happening in an actual engine during the real processes that
a house is losing heat at a rate of 2700 kjh per celsius temperature difference between the indoor and the outdoor
Determine the friction torque in the bearings, the time taken for the flywheel to come to rest when the driving torque is removed.
solar turbines mercury 50 gas-turbine power generatorinlet air temperature 300 kinlet air pressure 100 kpa atmospheric
Consider a thin thermocouple that behaves like iron having dimensions of 0.5 × 0.1 × 0.005 in.
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