Air at 20C flows over a 4-m long and 3-m wide surface of a plate whose temperature
Question:
Air at 20°C flows over a 4-m long and 3-m wide surface of a plate whose temperature is 80°C with a velocity of 5 m/s. The length of the surface for which the flow remains laminar is
(a) 1.5 m
(b) 1.8 m
(c) 2.0 m
(d) 2.8 m
(e) 4.0 m
(For air, use k = 0.02735 W/m . K, Pr = 0.7228, v = 1.798 × 10-5 m2/s)
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To determine the length of the surface for which the flow remains laminar you can use the Reynolds n...View the full answer
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Related Book For 
Heat And Mass Transfer Fundamentals And Applications
ISBN: 9780073398181
5th Edition
Authors: Yunus Cengel, Afshin Ghajar
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