Unformatted text preview: al gas P
h = u + = u + P v = u + RT ,
ρ (3.201) if ideal gas N T ci so ,i +
i=1 298 ˆ
cP (T ) ˆ
dT − R ln
Po N − R ln y
yi i . i=1 if ideal gas (3.202)
These relations are not obvious. A few are derived in examples here.
Derive the expression h = u + P/ρ.
Start from the equation for the constituent hi , multiply by mass fractions, sum over all species,
and use properties of mixtures:
ρi hi = ui + ci h i = ci u i + ci ci h i = (3.203)
N N N N (3.205) ci ρi Ri T
ρi (3.206) N ci u i + = i=1 Pi
ρi i=1 N ci h i ci ci u i +
i=1 i=1 (3.204) i=1 i=1 =u =h N h = ci Ri , u+T (3.207) i=1
= u + RT, (3.208) P
ρ (3.209) u+ CC BY-NC-ND. 18 November 2011, J. M. Powers....
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This note was uploaded on 11/26/2011 for the course EGN 3381 taught by Professor Park-sou during the Fall '11 term at FSU.
- Fall '11