Thermodynamics HW Solutions 663

Thermodynamics HW Solutions 663 - nu=mu/rho...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 8 Internal Forced Convection 8-50 "!PROBLEM 8-50" "GIVEN" L=0.20 "[m]" width=0.14 "[m]" height=0.002 "[m]" T_i=15 "[C]" Vel=4 "[m/s], parameter to be varied" "T_s=50 [C], parameter to be varied" "PROPERTIES" Fluid$='air' C_p=CP(Fluid$, T=T_ave)*Convert(kJ/kg-C, J/kg-C) k=Conductivity(Fluid$, T=T_ave) Pr=Prandtl(Fluid$, T=T_ave) rho=Density(Fluid$, T=T_ave, P=101.3) mu=Viscosity(Fluid$, T=T_ave)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: nu=mu/rho T_ave=1/2*(T_i+T_e) "ANALYSIS" A_c=width*height A=width*L p=2*(width+height) D_h=(4*A_c)/p Re=(Vel*D_h)/nu "The flow is laminar" L_t=0.05*Re*Pr*D_h "Taking conservative approach and assuming fully developed laminar flow, from Table 8-1 we read" Nusselt=8.24 h=k/D_h*Nusselt m_dot=rho*Vel*A_c Q_dot=h*A*(T_s-T_e) Q_dot=m_dot*C_p*(T_e-T_i) 8-25...
View Full Document

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.

Ask a homework question - tutors are online