Draw three temperature profiles for A aluminum and on a separate graph three

# Draw three temperature profiles for a aluminum and on

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different times during the cooling process. Draw three temperature profiles for (A) aluminum, and on a separate graph three temperature profiles for (B) cork. The three times you select should be: t = 0 (before cooling), and two times during the cooling (but not at infinite time). Here, look up k for cork. Density and cp also change. All other variables stay the same. k = 0.039 (cork board--- NOT cork loose fill!) Bi = hLc/k = 10 * 0.001 / 0.039 = 0.26 . Although this is < 1, it is not sufficient to assume lumped capacitance, so the center of the sample will always be hotter than the surface. The temperature profiles are flat for aluminum. For cork, the profiles will be concave down, though the actual shape may be different that what is shown. Aluminum Temperature Profile 0 100 200 300 400 500 0 0.5 1 1.5 2 Position (x, mm) Temperature (C) Initial Temperature t= t1 t = t2 Cork Temperature Profile 0 100 200 300 400 500 0 0.5 1 1.5 2 Position (x, mm) Temperature (C) Initial Temperature t= t1 t = t2

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• Fall '10
• Brazel
• Heat, Heat Transfer, Stainless steel, AISI, stainless steel AISI