Slides for Nonisothermal Equations of change

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1 Non-isothermal Equations of change Energy conservation for homogeneous media Total energy balance    ˆˆ () . . . . . . KK EU t p S     uq u τ uu g       . . . . .: . K K E Ep p t     u τ u τ g Kinetic energy balance  . ( ) . . : UU p S t   u τ u Internal energy balance ˆ ˆ .. : . Hp H pS tt                τ Enthalpy balance Energy conservation for homogeneous media Simplifications of the enthalpy equation with constant k and C p 1. Viscous dissipation is negligible in most practical flow problems: 2. Ideal gases and 2 ˆ p Tp CT k T S p     4. Incompressible fluids ( also valid for small variation of density ) and 2 ˆ .
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This note was uploaded on 01/27/2011 for the course PGE 323 taught by Professor Johns during the Spring '07 term at University of Texas at Austin.

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