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PD&C HW2pD

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Mar 9, 2026
31:50

Problem Statement: 1. Derive the time dependent heat diffusion equation for a uniform linear bar assuming constant thermal diffusivity. 2. Express the heat diffusion equation from C1 as an algebraic equation via explicit differencing. 3. Simulate the time dependent response of a uniform bar initially at 20C after its ends are raised then maintained at 40 and 100C respectively. Discretize the bar into 50 sections and show the simulated result for r= =0.499, 0.500, and r=0.501 4. Using von Neumann stability analysis explain why simulation results are unstable when r is set larger than 0.5.

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