an airstream of speed 160 m s and temperature 3000 k travels on the in
An airstream of speed 160 m/s and temperature 3000 K travels on the inside
of a 30 cm I.D. steel tube whose wall thickness is 2.5 mm. On the outside of
the tube, water coolant flows coaxially in an annular space 6.1 mm thick.
The coolant velocity is 10 m/s, and it has a local temperature of 15°C. Both
flows are approximately fully developed. The pressure of the airstream is
around 140 kPa. Estimate the maximum wall temperature of the tube.
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