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Question: The upper and lower surfaces of a triangular fin of length 90 mm transfer heat with a coefficient h = 200 W/m2 ·K to an ambient at temperature T∞ = 20 °C. The base temperature of the fin is maintained at T0 = 120 °C (Fig.). The thermal conductivity of the fin material is k = 50 W/m·K. Write the finite-difference formulation of the problem by considering a nodal spacing of 15 mm. Determine the tip temperature of and the heat transfer to the fin, and the efficiency of the fin, by the method of iteration.
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Consider a rod with a trapezoidal cross section as shown in Fig. with the specified temperature boundary conditions. Determine the steady cross sectional.
Consider an infinitely long pipe with diameter D = 0.2 m. The upstream half of the pipe is insulated and the downstream half is subjected to a uniform heat.
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a cylinder rotating at 40 rpm is lifting a 10 kn container connected to an inextensible cable. the diameter of the
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Consider an aluminium (k = 380 W/m-K) cylindrical rod of 0.15-m-long and 0.05-m-diameter. The top and bottom surfaces of the rod are maintained at constant temperature of 20oC and 95oC, respectively, while the side surface is perfectly insulated. Det..
a truncated cone 20 cm high is constructed of aluminum. the diameter at the top is 8 cm and the diameter at the bottom
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