Q6 A 1.0 m length copper bar with a constant cross section area of 0.0001 m² have the values of density, thermal conductivity and specific heat of 8960 kg/m², 385 W/m.K and 389 J/kg.K respectively. The copper bar is perfectly insulated laterally, with ends kept at temperature 0°C. The one-dimensional heat equation, with u(x,t) as the temperature is given as: ди = 0 k a? is the thermal diffusivity of the material, where; k = thermal conductivity, o=specific op heat, and p=density of material. (i) By using the method of separation of variable, derive the expression for the heat conduction through the copper bar If the initial uniform temperature, f(x)=100sin Ax, how long will it take for the (ii) maximum temperature in the bar to drop to 50°C. (Hint: maximum temperature occurs at the center of the bar)

Q6 A 1.0 m length copper bar with a constant cross section area of 0.0001 m² have the values of density, thermal conductivity and specific heat of 8960 kg/m², 385 W/m.K and 389 J/kg.K respectively. The copper bar is perfectly insulated laterally, with ends kept at temperature 0°C. The one-dimensional heat equation, with u(x,t) as the temperature is given as: ди = 0 k a? is the thermal diffusivity of the material, where; k = thermal conductivity, o=specific op heat, and p=density of material. (i) By using the method of separation of variable, derive the expression for the heat conduction through the copper bar If the initial uniform temperature, f(x)=100sin Ax, how long will it take for the (ii) maximum temperature in the bar to drop to 50°C. (Hint: maximum temperature occurs at the center of the bar)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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