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Unformatted text preview: Assumptions 1 Steady operating conditions exist. 2 The edge effects are negligible. Properties The properties of air at 50 ° C and 1 atm are (Table A15) C p =0.999 kJ/kgK Pr = 0.7440 The density of air at 50 ° C and 26.5 kPa is 3 kg/m 4141 . 273)K 50 kJ/kg.K)(287 . ( kPa 5 . 26 = + = = ρ RT P Analysis The average heat transfer coefficient can be determined from the modified Reynolds analogy to be C W/m 89.6 2 ⋅ = ° ⋅ = ρ = 3 / 2 3 2/3 ) 7440 . ( C) J/kg m/s)(999 6 . 3 / 800 )( kg/m 4141 . ( 2 0016 . Pr 2 p f C C h V Air 50 ° C 800 km/h 3 m 25 m Wing T s =4 ° C 654, 655 Design and Essay Problems KJ 627...
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This note was uploaded on 01/22/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.
 Fall '10
 Dr.DanielArenas
 Thermodynamics, Convection, Force, Mass

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