A circular fin is made of pure copper with a thermal conductivity of k = 400 W/(m C), h = 150 W/(m 2


A spherical fin is made of real copper after a while a thermal conductivity of k = 400 W/(m C), h = 150 W/(m2 C), magnitude hebetude r = 8900 kg/m3, and local fever c = 375 J/(kg C). The initial latitude of the fin is 25 C. The fin prolixity is 2 cm and the bisection is 0.4 cm. The correct tip of the fin is insulated. See Figure P16–18. The deep of the fin is then suddenly increased to a latitude of 85 C and maintained at this temperature. Use the lumped produce of the capacitance matrix, a duration tread of 0.1 s, and b =2 3. Use two elements of similar prolixity. Determine the latitude distribution up to 3 s. Compare your results after a while Example 16.7, which used the consistent produce of the capacitance matrix.