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Air flows through a 0.25-m-diameter duct. At the inlet the velocity is 300 m/s, and the...

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Mechanical Engineering

Air flows through a 0.25-m-diameter duct. At the inlet thevelocity is 300 m/s, and the stagnation temperature is 90°C. If theMach number at the exit is 0.3, determine the direction and therate of heat transfer. For the same conditions at the inlet,determine the amount of heat that must be transferred to the systemif the flow is to be sonic at the exit of the duct.

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