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avl fire dual fuel (methane+diesel) combustion simulation

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Old   January 1, 2012, 12:39
Default avl fire dual fuel (methane+diesel) combustion simulation
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hassan
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hello every body

I have been using AVL fire v.8.6 as my CFD tool for some years now and I have done some simulations with it. right now I'm trying to simulate a dual fuel (methane+diesel) mode. namely, methan is a primary fuel in the intake and a diesel pilot fuel directly injected to the cylinder.

my problem is that diesel pilot fuel cannot injected and a liquid methan is injected directly into the cylinder. hence, there is only methane mass fraction in 2D results of simulation.

I would really appreciate if any one could help me on this case.

Thanks guys
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Old   January 22, 2012, 01:26
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Quote:
Originally Posted by khatamnejad View Post
hello every body

I have been using AVL fire v.8.6 as my CFD tool for some years now and I have done some simulations with it. right now I'm trying to simulate a dual fuel (methane+diesel) mode. namely, methan is a primary fuel in the intake and a diesel pilot fuel directly injected to the cylinder.

my problem is that diesel pilot fuel cannot injected and a liquid methan is injected directly into the cylinder. hence, there is only methane mass fraction in 2D results of simulation.

I would really appreciate if any one could help me on this case.

Thanks guys
I am doing a similar work, Did you work out the solution? [I am using fluent for my work]
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Old   January 25, 2012, 22:13
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CHEN RUN
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hi, i am also simulating the blended fuel using AVL Fire.

do you have experiences on spray process of blended fuel? such as ethanol-gasoline or methanol-diesel and the like.

i face the problem that in the liquid property of spray module, i don't know whether the index scalar should be set to 1 or 2 for ethanol and gasoline respectively, such as 1 to ethanol and 2 to gasoline, or 1 to both ethanol and gasoline.

On the other hand, is it right for species transport set to general, or standard?

This problem makes me in trouble these days.
I am very appreciated if u can help me. Thank u very much.
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Old   January 28, 2012, 03:11
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hassan
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hi
Do you really could simulation the blended fuel using AVL Fire?!
What is your fire version? (8.6 or upper?)
I could not active general species transport for simulation of blended fuel up to now, because general species transport can not active together with combustion model!!
But, my problem is easier than your problem and there is diesel fuel spray as well as methane is added to air in the intake port and I think that do not need to active general species transport. I could not liquid property of spray module for diesel pilot injection and liquid methane is injected.
I would like to know the typical setting needed for such a simulation.
If you are interested to share ideas over this and blended fuel send me an email on khatamnezhad@yahoo.com.

thanks a lot
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Old   January 28, 2012, 03:17
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thanks a lot
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Old   January 28, 2012, 09:26
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CHEN RUN
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I've sent a e-mail to you. Please check it.

Thanks.
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Old   January 29, 2012, 00:44
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hassan
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Quote:
Originally Posted by Danny_tan View Post
I've sent a e-mail to you. Please check it.

Thanks.
hi
I didn't recieve any email from you.
please resend me an email to h.khatamnejad@desa.ir
thanks a lot
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Old   February 19, 2012, 06:25
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bagus anang
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To: Dany Tan
Got similar problem with you...

However if the target is only pressure prediction, The easy way is change value of LHV.


To: khantamnejad
try ignition model : diesel ignited gas

Plz mail me at gusanang@rocketmail.com to further discussion.
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Old   September 9, 2013, 12:41
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amin u3fi
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Hi Mr khatamnejad
I think your simulation is false...
I can help you.
amin_u50
best regards
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