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total pressure in starcd 4.06 007

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Old   March 17, 2009, 09:42
Default total pressure in starcd 4.06 007
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the total pressure in starcd 4.06 007 is wrong, you can check it if you use this version.
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Old   April 2, 2009, 02:20
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For incompressible flow, the calculation of PTOT is quite correct.
For compressible flow, it's not correct, please try this macro to get real PTOT in v4.06. (Maybe also in some early versions of v4.08)

! Molecular Weight
*SET,WM,28.96
! GAMMA=CP/(CP-(R/WM))
*SET,R,8314.3
*SET,RWM,R / WM * -1.
OPER,GETC,CP,1
OPER,SADD,RWM,1,2
OPER,DIVI,1,2,5
! GAMMA/(GAMMA-1)
OPER,SADD,-1,5,6
OPER,DIVI,5,6,6
! PTOT=PTER,ABSO*(TTOT/T)**(GAMMA/(GAMMA-1))
OPER,GETC,PTER,1,ABSO
OPER,GETC,TTOT,2
OPER,GETC,T,3
OPER,DIVI,2,3,4
OPER,X**Y,4,6,4
OPER,MULT,1,4,4
OPER,SSUB,100000,4,4
OPER,SMULT,-1,4,4
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