simulation Dual Fuel engine with AVL FIRE

Hoursfer · March 17, 2012, 06:37

hi
I have been using AVL Fire v2010.1. I have done investigation of DI dual fuel engine that fuled with natural gas and diesel inject into cylinder but i dont now how to insert fuels in solver tree.when i define fules into "Multi-Component" in "Initial Condition" segment, together diesel & natural gas insert into cylinder in the first moment whereas i intend to diesel is injected into the compressed air & natural gas mixture. please tell me how to do that?thanks

hkoten · May 12, 2012, 21:18

Hi Hoursfer,

you simulate on linux or windows which one.

avlcfd · September 14, 2012, 09:02

Hoursfer, I suppose you like to simulate a Diesel ignited gas engine, where as the gas is pre-mixed. If so, specify the gas in the initial conditions and the Diesel in the spray module. Select the right ignition model too.

Actually this is a simplified approach. Doing so will cause the injected Diesel evaporating on the gas species. If teh amount of Diesel being injected is small that approach works fine.

yanjl123 · January 15, 2013, 00:24

Quote:

Originally Posted by avlcfd

Hoursfer, I suppose you like to simulate a Diesel ignited gas engine, where as the gas is pre-mixed. If so, specify the gas in the initial conditions and the Diesel in the spray module. Select the right ignition model too.

Is it necessary to select a ignition model,and which ignition model should I select?

santoso_lipi · January 28, 2013, 06:22

You could select Diesel Ignited Gas Engine as ignition model

yanjl123 · January 28, 2013, 10:10

Quote:

Originally Posted by santoso_lipi

You could select Diesel Ignited Gas Engine as ignition model

What else parameters should are necessary for this ignition model ? I can not select Diesel Ignited Gas Engine as ignition model, something must be wrong.

-Phil- · January 28, 2013, 10:49

Hi yanjl123,

the DIESEL vapors to CH4. That's because FIRE can only handle one fuel at the same time. As avlcfd said, thats the best approch at the moment.

In the "Diesel ignited gas engine" - Ignition model try the setting "automatic" for the fuel mass fraction limit. This gives quite reliable results for a first run.

yanjl123 · January 28, 2013, 10:55

The problem is although the Diesel Ignited Gas Engine button seems selectable, I can't select it.

-Phil- · January 28, 2013, 11:15

Hi yanjl123,

i guess you try to combine the ECFM-3Z with the Diesel ignited gas engine - ignition model.

For a Diesel ignited gas engine simulation use the ECFM.

santoso_lipi · January 28, 2013, 19:33

yanjl123,

Diesel Ignited Gas Engine works with ECFM or EBU combustion model

JoshS. · March 13, 2013, 23:01

Hi, i am trying to simulate a dual fuel engine as well but i couldnt seem to get Diesel Ignited Gas Engine to work with ECFM. when i start the simulation a few seconds after it stops. Need Help.

sophew · March 17, 2013, 02:52

why my FIRE simulation appear this error:%fire-F-cyispra, You specified a fuel that is not supported! can you help me ? i choose the natural gas and diesel and they are both in the fuel database. and i think maybe i set the wrong number of the index scalar ? i set the two both 1.

Karthikeya · March 28, 2013, 09:49

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.

March 17, 2012, 06:37	simulation Dual Fuel engine with AVL FIRE	#1
Hoursfer New Member alireza Join Date: Mar 2012 Posts: 1 Rep Power: 0	hi I have been using AVL Fire v2010.1. I have done investigation of DI dual fuel engine that fuled with natural gas and diesel inject into cylinder but i dont now how to insert fuels in solver tree.when i define fules into "Multi-Component" in "Initial Condition" segment, together diesel & natural gas insert into cylinder in the first moment whereas i intend to diesel is injected into the compressed air & natural gas mixture. please tell me how to do that?thanks

January 28, 2013, 06:22		#5
santoso_lipi New Member Widodo Budi Santoso Join Date: Jan 2013 Location: Bandung, Indonesia Posts: 5 Rep Power: 2	You could select Diesel Ignited Gas Engine as ignition model yanjl123 likes this.

March 17, 2013, 02:52		#12
sophew New Member Join Date: Mar 2012 Posts: 1 Rep Power: 0	why my FIRE simulation appear this error:%fire-F-cyispra, You specified a fuel that is not supported! can you help me ? i choose the natural gas and diesel and they are both in the fuel database. and i think maybe i set the wrong number of the index scalar ? i set the two both 1. Last edited by sophew; March 17, 2013 at 03:40.

March 28, 2013, 09:49	i can help you contact me 9912194512	#13
Karthikeya New Member NANI Join Date: Sep 2012 Posts: 11 Rep Power: 2	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.

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May 12, 2012, 21:18		#2
hkoten New Member mosheu Join Date: Apr 2009 Posts: 14 Rep Power: 6	Hi Hoursfer, you simulate on linux or windows which one.

September 14, 2012, 09:02		#3
avlcfd New Member Maik SUFFA Join Date: Jul 2012 Posts: 7 Rep Power: 2	Hoursfer, I suppose you like to simulate a Diesel ignited gas engine, where as the gas is pre-mixed. If so, specify the gas in the initial conditions and the Diesel in the spray module. Select the right ignition model too. Actually this is a simplified approach. Doing so will cause the injected Diesel evaporating on the gas species. If teh amount of Diesel being injected is small that approach works fine.

January 28, 2013, 10:49		#7
-Phil- New Member Join Date: Jan 2013 Posts: 2 Rep Power: 0	Hi yanjl123, the DIESEL vapors to CH4. That's because FIRE can only handle one fuel at the same time. As avlcfd said, thats the best approch at the moment. In the "Diesel ignited gas engine" - Ignition model try the setting "automatic" for the fuel mass fraction limit. This gives quite reliable results for a first run.

January 28, 2013, 10:55		#8
yanjl123 New Member Join Date: Jan 2013 Posts: 3 Rep Power: 2	The problem is although the Diesel Ignited Gas Engine button seems selectable, I can't select it.

January 28, 2013, 11:15		#9
-Phil- New Member Join Date: Jan 2013 Posts: 2 Rep Power: 0	Hi yanjl123, i guess you try to combine the ECFM-3Z with the Diesel ignited gas engine - ignition model. For a Diesel ignited gas engine simulation use the ECFM.

January 28, 2013, 19:33		#10
santoso_lipi New Member Widodo Budi Santoso Join Date: Jan 2013 Location: Bandung, Indonesia Posts: 5 Rep Power: 2	yanjl123, Diesel Ignited Gas Engine works with ECFM or EBU combustion model

March 13, 2013, 23:01		#11
JoshS. New Member Joshua Join Date: Mar 2013 Posts: 7 Rep Power: 2	Hi, i am trying to simulate a dual fuel engine as well but i couldnt seem to get Diesel Ignited Gas Engine to work with ECFM. when i start the simulation a few seconds after it stops. Need Help.

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