Thermodynamics HW Solutions 546

Thermodynamics HW Solutions 546 - C_f_x=0.664/Re_x^0.5 x...

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Chapter 7 External Forced Convection 7-19E "!PROBLEM 7-19E" "GIVEN" T_air=60 "[F]" "x=10 [ft], parameter to be varied" Vel=7 "[ft/s]" "PROPERTIES" Fluid$='air' k=Conductivity(Fluid$, T=T_air) Pr=Prandtl(Fluid$, T=T_air) rho=Density(Fluid$, T=T_air, P=14.7) mu=Viscosity(Fluid$, T=T_air)*Convert(lbm/ft-h, lbm/ft-s) nu=mu/rho "ANALYSIS" Re_x=(Vel*x)/nu "Reynolds number is calculated to be smaller than the critical Re number. The flow is laminar." Nusselt_x=0.332*Re_x^0.5*Pr^(1/3) h_x=k/x*Nusselt_x
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Unformatted text preview: C_f_x=0.664/Re_x^0.5 x [ft] h x [Btu/h.ft 2 .F] C f,x 0.1 2.848 0.01 0.2 2.014 0.007071 0.3 1.644 0.005774 0.4 1.424 0.005 0.5 1.273 0.004472 0.6 1.163 0.004083 0.7 1.076 0.00378 0.8 1.007 0.003536 0.9 0.9492 0.003333 1 0.9005 0.003162 9.1 0.2985 0.001048 9.2 0.2969 0.001043 9.3 0.2953 0.001037 9.4 0.2937 0.001031 9.5 0.2922 0.001026 9.6 0.2906 0.001021 9.7 0.2891 0.001015 9.8 0.2877 0.00101 9.9 0.2862 0.001005 10 0.2848 0.001 7-8...
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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.

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