Coal gasification fluent

arnab · January 4, 2011, 16:27

Hi all,

I am trying to simulate coal gasification using species transport, finite rate chemistry/eddy dissipation model....

These are the reactions I want to include:
Heterogeneous Reactions:
C(s)+0.5O2 --> CO
C(s)+CO2 --> 2CO
C(s)+H2O --> CO+H2
Homogeneous Reactions:
Volatiles+O2 --> CO2+H2O
CO+0.5O2 --> CO2
CO+H2O --> CO2+H2
CO2+H2 --> CO2+H2O
H2+0.5O2 --> H2O

I have chosen coal-mv-volatiles-air as the mixture material...but having confusion over what species to include in the mixture /fluid /solid under the materials tab...I am using FLUENT 12.1 version...
could anyone please suggest on this...

thanks
Arnab

prishor · February 24, 2013, 01:04

dear arnab,

i am prishor. i am doing the simulation of biomass gasification in Fludized bed. i am also stuck with the material entry in material panel. for the homogeneous reaction is it necessary to enter each reactant mixture in material tab?.
please help me if you have any idea.

thanks and regards,
prishor p k

Quote:

Originally Posted by arnab

Hi all,

I am trying to simulate coal gasification using species transport, finite rate chemistry/eddy dissipation model....

These are the reactions I want to include:
Heterogeneous Reactions:
C(s)+0.5O2 --> CO
C(s)+CO2 --> 2CO
C(s)+H2O --> CO+H2
Homogeneous Reactions:
Volatiles+O2 --> CO2+H2O
CO+0.5O2 --> CO2
CO+H2O --> CO2+H2
CO2+H2 --> CO2+H2O
H2+0.5O2 --> H2O

I have chosen coal-mv-volatiles-air as the mixture material...but having confusion over what species to include in the mixture /fluid /solid under the materials tab...I am using FLUENT 12.1 version...
could anyone please suggest on this...

thanks
Arnab

msaeedsadeghi · February 24, 2013, 05:36

I have modeled Fixed-Bed combustion by UDF programming in fluent. Fluidized bed may be like that.

prishor · February 26, 2013, 01:01

dear saeed,
thank you for your kind reply.i have a doubt that where i should enter both heterogeneous and homogeneous reaction...
whether to enter homogeneous reaction in species transport panel and heterogeneous reaction in phase interaction panel only..
can you help me with your UDF so that i will get some idea about UDF for multiphase.

awaiting your valuable reply,
thanks and regards,
prishor

QUOTE=msaeedsadeghi;409764]I have modeled Fixed-Bed combustion by UDF programming in fluent. Fluidized bed may be like that.[/QUOTE]

msaeedsadeghi · February 26, 2013, 01:08

Please email me a sample paper to check and help in defining parameters.

prishor · February 26, 2013, 01:28

okkay mr. saeed i will a sample journal paper in which they mention the coal gasification with some reactions and its rate constants.

thanks and regards,
prishor

NiBa · January 19, 2015, 07:22

[QUOTE=arnab;289255]Hi all,

I am trying to simulate coal gasification using species transport, finite rate chemistry/eddy dissipation model....

These are the reactions I want to include:
Heterogeneous Reactions:
C(s)+0.5O2 --> CO
C(s)+CO2 --> 2CO
C(s)+H2O --> CO+H2
Homogeneous Reactions:
Volatiles+O2 --> CO2+H2O
CO+0.5O2 --> CO2
CO+H2O --> CO2+H2
CO2+H2 --> CO2+H2O
H2+0.5O2 --> H2O

I have chosen coal-mv-volatiles-air as the mixture material...but having confusion over what species to include in the mixture /fluid /solid under the materials tab...I am using FLUENT 12.1 version...
could anyone please suggest on this...

thanks
Arnab

In homogenous reactions do you know from what species consist of the volatiles? or do you define this volatiles with another option? i have a similar problem to the understanding of my fuel.
thank you

mohammadjm2008 · August 21, 2016, 07:30

Dear Saeed,
I am trying to simulate coal combustion by UDF programming in fluent.
Would you please help me by a sample UDF file?

Email address: Mohammad_jm2008@yahoo.com

Thanks in advaned

Best regards
Yazdanpanah

shai102 · November 17, 2016, 11:42

what does mv in coal - mv mean?

Gorden · July 20, 2019, 08:42

Dear msaeedsadeghi，
I am trying to write an UDF including Multi-step homogeneous reactions of coal combustion for my simulation on a furnace，but I am a newbie on UDF，can I have a communication with you for some help if you are available？
or you could offer me some simple UDF codes samples so I can learn it

Best wishes

January 4, 2011, 16:27	Coal gasification fluent	#1
arnab New Member Join Date: Jan 2011 Posts: 7 Rep Power: 15	Hi all, I am trying to simulate coal gasification using species transport, finite rate chemistry/eddy dissipation model.... These are the reactions I want to include: Heterogeneous Reactions: C(s)+0.5O2 --> CO C(s)+CO2 --> 2CO C(s)+H2O --> CO+H2 Homogeneous Reactions: Volatiles+O2 --> CO2+H2O CO+0.5O2 --> CO2 CO+H2O --> CO2+H2 CO2+H2 --> CO2+H2O H2+0.5O2 --> H2O I have chosen coal-mv-volatiles-air as the mixture material...but having confusion over what species to include in the mixture /fluid /solid under the materials tab...I am using FLUENT 12.1 version... could anyone please suggest on this... thanks Arnab

February 24, 2013, 05:36		#3
msaeedsadeghi Senior Member SSL Join Date: Oct 2012 Posts: 226 Rep Power: 14	I have modeled Fixed-Bed combustion by UDF programming in fluent. Fluidized bed may be like that. Gorden and Silence017 like this.

August 21, 2016, 07:30	Coal Combustion	#8
mohammadjm2008 New Member International/Other Join Date: Feb 2014 Posts: 3 Rep Power: 0	Dear Saeed, I am trying to simulate coal combustion by UDF programming in fluent. Would you please help me by a sample UDF file? Email address: Mohammad_jm2008@yahoo.com Thanks in advaned Best regards Yazdanpanah

November 17, 2016, 11:42	meaning	#9
shai102 New Member shailin Join Date: Apr 2016 Posts: 4 Rep Power: 10	what does mv in coal - mv mean?

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February 26, 2013, 01:01		#4
prishor New Member prishor p k Join Date: Jul 2012 Posts: 29 Rep Power: 13	dear saeed, thank you for your kind reply.i have a doubt that where i should enter both heterogeneous and homogeneous reaction... whether to enter homogeneous reaction in species transport panel and heterogeneous reaction in phase interaction panel only.. can you help me with your UDF so that i will get some idea about UDF for multiphase. awaiting your valuable reply, thanks and regards, prishor QUOTE=msaeedsadeghi;409764]I have modeled Fixed-Bed combustion by UDF programming in fluent. Fluidized bed may be like that.[/QUOTE]

February 26, 2013, 01:08		#5
msaeedsadeghi Senior Member SSL Join Date: Oct 2012 Posts: 226 Rep Power: 14	Please email me a sample paper to check and help in defining parameters.

February 26, 2013, 01:28		#6
prishor New Member prishor p k Join Date: Jul 2012 Posts: 29 Rep Power: 13	okkay mr. saeed i will a sample journal paper in which they mention the coal gasification with some reactions and its rate constants. thanks and regards, prishor

January 19, 2015, 07:22		#7
NiBa Member Nikolaos Babilas Join Date: Nov 2014 Posts: 37 Rep Power: 11	[QUOTE=arnab;289255]Hi all, I am trying to simulate coal gasification using species transport, finite rate chemistry/eddy dissipation model.... These are the reactions I want to include: Heterogeneous Reactions: C(s)+0.5O2 --> CO C(s)+CO2 --> 2CO C(s)+H2O --> CO+H2 Homogeneous Reactions: Volatiles+O2 --> CO2+H2O CO+0.5O2 --> CO2 CO+H2O --> CO2+H2 CO2+H2 --> CO2+H2O H2+0.5O2 --> H2O I have chosen coal-mv-volatiles-air as the mixture material...but having confusion over what species to include in the mixture /fluid /solid under the materials tab...I am using FLUENT 12.1 version... could anyone please suggest on this... thanks Arnab In homogenous reactions do you know from what species consist of the volatiles? or do you define this volatiles with another option? i have a similar problem to the understanding of my fuel. thank you

July 20, 2019, 08:42		#10
Gorden New Member Join Date: Dec 2018 Posts: 1 Rep Power: 0	Dear msaeedsadeghi， I am trying to write an UDF including Multi-step homogeneous reactions of coal combustion for my simulation on a furnace，but I am a newbie on UDF，can I have a communication with you for some help if you are available？ or you could offer me some simple UDF codes samples so I can learn it Best wishes