Thermodynamics HW Solutions 118

Thermodynamics HW Solutions 118 - r = is determined from...

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Chapter 2 Heat Conduction Equation 2-78 Heat is generated in a long solid cylinder with a specified surface temperature. The variation of temperature in the cylinder is given by s T r r k r g r T + = 2 0 2 0 1 ) ( ( a ) Heat conduction is steady since there is no time t variable involved. ( b ) Heat conduction is a one-dimensional. ( c ) Using Eq. (1), the heat flux on the surface of the cylinder at
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Unformatted text preview: r = is determined from its definition to be r 2 W/cm 280 = cm) 4 )( W/cm 35 ( 2 2 2 2 ) ( 3 2 2 2 2 = = = = = = r g r r k r g k r r k r g k dr r dT k q r r s & & & & 80 C r D k g o 2-41...
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