insert chemical Reaction

amin_u50 · February 23, 2013, 05:27

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hi....i want to to simulate HCCI engine with AVL FIRE...therefore i need to import chemical kinetic but i don't know how done this work...does anybody know about this problem...help me...thnx

avlcomb · February 26, 2013, 08:38

First of all, you need an ascii file containing the chemical reactions in Chemkin II compatible layout. Additionally you might also need the files thermdat and trandat, which contain the thermochemical and transport data for the species. Note, that the properties of many species are already contained in FIRE, so you need the external files only in the case that the species are not in the internal database.

Second step is to create a case and choose 'General Gas Phase Reactions' (GGPR). There you can browse the mechanism file.
Chose other options as 'turbulence chemistry interaction' to your convenience. It is not recommended to change the settings for the chemistry solver - keep the default values.
If thermdat or trandat is required for your project, copy the file(s) to the calculation case directory.

amin_u50 · March 3, 2013, 15:50

hi avlcomb... i solve that kinetic problem in AVL FIRE and thanks you for guide me.i found General Gas Phase Reaction in AVL FIRE...thanks a lot...

santoso_lipi · March 6, 2013, 20:45

Dear all,

I try to incorporate the mechanism file. The solver could read the file, in the .fla file:

%fire-I-CHOM_INIT_CHEMISTRY, Done: Reading Chemical Reaction Input File:
%fire-I-CHOM_INPUT, Finished setup of homogeneous reactions.

And call the solver:

%fire-I-chom_rate, calling solver for homogeneous reactions
%fire-I-chom_rate, progress of ODE solution = 20%
.................................................. .........
%fire-I-chom_rate, progress of ODE solution = 100%

But could not start the calculation. The calculation stop at first time step:

%fire-I-cysetup, ====================================
Testing proper position of injector:
%fire-I-cysetup, Calculation continues

Any body could help to solve the problem?
Thank you

Karthikeya · March 28, 2013, 09:51

I can help you . But not on line. message me ur mobile no. or e mail id. we wil be in touch with that. where are you from. 9912194512

February 23, 2013, 05:27	insert chemical Reaction	#1
amin_u50 Member amin u3fi Join Date: Feb 2013 Posts: 63 Rep Power: 6	Sponsored Links hi....i want to to simulate HCCI engine with AVL FIRE...therefore i need to import chemical kinetic but i don't know how done this work...does anybody know about this problem...help me...thnx

March 3, 2013, 15:50	insert chemical Reaction	#3
amin_u50 Member amin u3fi Join Date: Feb 2013 Posts: 63 Rep Power: 6	hi avlcomb... i solve that kinetic problem in AVL FIRE and thanks you for guide me.i found General Gas Phase Reaction in AVL FIRE...thanks a lot...

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February 26, 2013, 08:38		#2
avlcomb New Member Peter Priesching Join Date: Feb 2013 Posts: 2 Rep Power: 0	First of all, you need an ascii file containing the chemical reactions in Chemkin II compatible layout. Additionally you might also need the files thermdat and trandat, which contain the thermochemical and transport data for the species. Note, that the properties of many species are already contained in FIRE, so you need the external files only in the case that the species are not in the internal database. Second step is to create a case and choose 'General Gas Phase Reactions' (GGPR). There you can browse the mechanism file. Chose other options as 'turbulence chemistry interaction' to your convenience. It is not recommended to change the settings for the chemistry solver - keep the default values. If thermdat or trandat is required for your project, copy the file(s) to the calculation case directory.

March 6, 2013, 20:45		#4
santoso_lipi New Member Widodo Budi Santoso Join Date: Jan 2013 Location: Bandung, Indonesia Posts: 5 Rep Power: 6	Dear all, I try to incorporate the mechanism file. The solver could read the file, in the .fla file: %fire-I-CHOM_INIT_CHEMISTRY, Done: Reading Chemical Reaction Input File: %fire-I-CHOM_INPUT, Finished setup of homogeneous reactions. And call the solver: %fire-I-chom_rate, calling solver for homogeneous reactions %fire-I-chom_rate, progress of ODE solution = 20% .................................................. ......... %fire-I-chom_rate, progress of ODE solution = 100% But could not start the calculation. The calculation stop at first time step: %fire-I-cysetup, ==================================== Testing proper position of injector: %fire-I-cysetup, Calculation continues Any body could help to solve the problem? Thank you

March 28, 2013, 09:51		#5
Karthikeya New Member NANI Join Date: Sep 2012 Posts: 11 Rep Power: 6	I can help you . But not on line. message me ur mobile no. or e mail id. we wil be in touch with that. where are you from. 9912194512