1. A thick metal plate (alpha = 3.5 x 10-6 m2/s and k = 0.7 W/m-K),...

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Mechanical Engineering

1. A thick metal plate (alpha = 3.5 x 10-6m2/s and k = 0.7 W/m-K), initially at a uniformtemperature of 100oC, is suddenly exposed to aconvection environment of water at 20oC, giving a verylarge convection coefficient.

a. Sketch the surface heat flux, q\", as a function of time

b. Using an explicit numerical scheme with a time step of 60 s,calculate the time required for the temperature to change 80 mmfrom the surface.

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