How to calculate liquid film mass in prostar?

skylent · December 4, 2012, 03:47

Hi, everyone.
I wanna calculate the total liquid film mass on the cylinder wall(liner) boundary in IC engine by using pro-Star's postprocessing utility(data loaded from *.ccmt file).

The commands I used as follows:
----------------------------------------------------------------
bset,newset,region,11
! boundary region 11->stands for liner
cset,newset,bset
operate,getw,lfm_1,1
!put area average liquid film mass in register 1(kg/m^2)
operate,getw,area,2
!put (wall)area in register 2,the unit of area ( mm^2)
operate,multi,1,2,3
!put the product of register1*register2 to register 3
operate,smulti,1.0e-6,3,4
!put the product of 1.0e-6*register3 to register 4 (kg)
summarise,cset
----------------------------------------------------------------
but the last command cannot get the right results.
Can anyone help me?
thanks!

Pauli · December 4, 2012, 10:39

This may work better:

bset,newset,region,11
! boundary region 11->stands for liner
operate,getw,lfm_1,1
vset news bset
cset news vset all
cset subs shell
!put area average liquid film mass in register 1(kg/m^2)
operate,getw,area,2
!put (wall)area in register 2,the unit of area ( mm^2)
operate,multi,1,2,3
!put the product of register1*register2 to register 3
operate,smulti,1.0e-6,3,4
!put the product of 1.0e-6*register3 to register 4 (kg)
summarise,cset

skylent · December 5, 2012, 19:50

Thanks very much to pauli, it seems work very well.
I think you are a real expert in star-cd.

December 4, 2012, 03:47	How to calculate liquid film mass in prostar?	#1
skylent Member zheng jianjun Join Date: Jan 2010 Posts: 40 Rep Power: 5	Hi, everyone. I wanna calculate the total liquid film mass on the cylinder wall(liner) boundary in IC engine by using pro-Star's postprocessing utility(data loaded from .ccmt file). The commands I used as follows: ---------------------------------------------------------------- bset,newset,region,11 ! boundary region 11->stands for liner cset,newset,bset operate,getw,lfm_1,1 !put area average liquid film mass in register 1(kg/m^2) operate,getw,area,2 !put (wall)area in register 2,the unit of area ( mm^2) operate,multi,1,2,3 !put the product of register1register2 to register 3 operate,smulti,1.0e-6,3,4 !put the product of 1.0e-6*register3 to register 4 (kg) summarise,cset ---------------------------------------------------------------- but the last command cannot get the right results. Can anyone help me? thanks!

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December 4, 2012, 10:39		#2
Pauli Senior Member Pauli Join Date: Mar 2009 Posts: 165 Rep Power: 6	This may work better: bset,newset,region,11 ! boundary region 11->stands for liner operate,getw,lfm_1,1 vset news bset cset news vset all cset subs shell !put area average liquid film mass in register 1(kg/m^2) operate,getw,area,2 !put (wall)area in register 2,the unit of area ( mm^2) operate,multi,1,2,3 !put the product of register1register2 to register 3 operate,smulti,1.0e-6,3,4 !put the product of 1.0e-6register3 to register 4 (kg) summarise,cset

December 5, 2012, 19:50		#3
skylent Member zheng jianjun Join Date: Jan 2010 Posts: 40 Rep Power: 5	Thanks very much to pauli, it seems work very well. I think you are a real expert in star-cd.