Question: The inner surface of a plane wall is insulated while the outer surface is exposed to an airstream at T . The wall is

The inner surface of a plane wall is insulated while the outer surface is exposed to an airstream at T_∞. The wall is at a uniform temperature corresponding to that of the airstream. Suddenly, a radiation heat source is switched on applying a uniform flux q"_o to the outer surface.

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(a) Sketch and label, on T – x coordinates, the temperature distributions: initial, steady-state, and at two intermediate times.

(b) Sketch the heat flux at the outer surface q"_x(L, t) as a function of time.

9" for t > 0 Insulation - To h Lax

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