A disk-shaped turbine rotor is heat-treated by quenching in water at
(a) Assuming lumped-capacitance behavior and constant properties for the rotor, carefully plot the rotor temperature versus time, pointing out important features of your
(b) If the rotor is reoriented so that its large surfaces are horizontal (Orientation B), would the rotor temperature decrease more rapidly or less rapidly relative to Orientation A?
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Fundamentals of Heat and Mass Transfer
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