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Unformatted text preview: Hint: use the following expression for the temperature dependence of the thermal conductivity k ( 29 ( 29 1 1 1 1 T T k k k k k k k T T T T T T = +  ≡ +  Θ ÷ Θ= ÷ When you obtain a differential equation for temperature T, you may want to make the following variable transformation ( 29 1 dT d T T dr dr Θ =Using this transformation to convert the differential equation for T into a differential equation for Θ . Θ To solve the equation in (b), you multiply both sides of this equation with dr . As a result, the left and righthand sides of the resulting equation (i.e. after multiplying by dr) are two separate differential equations, which can be integrated separately. Problem #4 : Solve problem 10.B.9 in BSL: only question (a)...
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 Spring '08
 Peters
 Derivative

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