Select the correct answer to the following multiple-choice questions. Briefly explain your choice. 10. In heat conduction...

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Civil Engineering

Select the correct answer to the following multiple-choicequestions. Briefly explain your choice.

10. In heat conduction analysis, the error of the heat flux isestimated using a formula in which an unknown constant, a measureof the element shape, and the element size appear. This formulatells us
Â Â Â A) where the locations with the largest errorare,
Â Â Â B) how to control the error,
Â Â Â C) both of the above,
Â Â Â D) none of the above.

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4.4 Ratings (853 Votes)

Solution C Example The heat fluxes at the wall faces can be evaluated from Fouriers law x x dx dT kxq Using the temperature distribution Tx to evaluate the gradient find dx d kxq x abx2 2kbx The flux at the face is then x0 2 x 20 x x mW00010Lq m0500mC2000KmW502kbL2lqLatX 00q Comments from an overall energy balance on the wall it follows that g 0EEE out in 0LqLq0q x x 35 2 x x mW1002 0500 m 0mw0010 L 0qLq q Conduction Heat Transfer We will start by examining conduction heat transfer We must first determine how to relate the heat transfer to other properties either mechanical thermal or geometrical The answer to this is rooted in experiment but it can be motivated by See Answer

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