Practice Civil Engineering Example: Temperature in a Concrete Slab - 18.9 | 18. Separation of Variables, Use of Fourier Series | Mathematics (Civil Engineering -1)
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Practice Questions

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Question 1

Easy

What is the initial temperature distribution in the concrete slab?

💡 Hint: Look for the sine function in the problem statement.

Question 2

Easy

What are the boundary conditions for this problem?

💡 Hint: Consider that the boundaries are insulated.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the initial temperature distribution of the slab?

💡 Hint: Refer to the section's description for the initial condition.

Question 2

The boundary conditions for the insulation are defined as:

  • A) u(0,t)=u(10,t)=100
  • B) u(0,t)=u(10,t)=0
  • C) u(0,t)≠u(10,t)

💡 Hint: Consider what happens at an insulated boundary.

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Challenge Problems

Push your limits with challenges.

Question 1

Consider a concrete slab with modified initial temperature distribution given by $$u(x,0) = 50 + 20 ext{sin}igg( rac{5 ext{π}x}{10}igg)$$. Determine the steady-state temperature profile as time approaches infinity.

💡 Hint: Focus on how oscillating functions behave as they dissipate energy.

Question 2

If the thermal diffusivity, α, changes to 0.5, analyze how this affects the decay time of the temperature wave.

💡 Hint: Think about how thermal properties influence heat behavior.

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