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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: ôu ốt 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: ôu ốt 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)

Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section: Chapter Questions
Problem 33CT
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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: ôu ốt 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)
Transcribed Image Text: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: ôu ốt 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)
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