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Old   July 7, 2012, 18:07
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  #21
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sena
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Hi All,


I have already done 1D analysis with Avl Boost.And now,I am trying to obtain some results with Avl Fire Ese Diesel. But I would ask you a question about it.My Air-Fuel Ratio is 16.86 which I saw on Avl Boost(1D analysis).But Avl Fire Ese Diesel gives me 37.4. I wrote in inital conditons on Avl Fire EseDiesel:

Egr Composition:0.0588
Egr Mass Fraction:0
Equivalence Ratio:0

How can I correct it to 16.86? The values donít keep eachother . But total mass from 1D analysis and 3D analysis keep themselves. Please help me...


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Originally Posted by Ayoshi View Post
hi sena , use fame engine plus .
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Old   July 11, 2012, 14:16
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since u haven gave any equivalence ratio , fire shouldn be giving such a weird value .. can you send me your .fla file available in calculation folder to ayoshicfd@gmail.com ... i shall try my level best to sort this out
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Old   July 20, 2012, 12:14
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Hi,

Are you using Avl Boost? I would ask you a question about it.I can see mean pressure or total mass graphs but can not export the data of these graphs, how can ı do this? I want to obtain these datas of the graphs?

Kind Regards,

Sena

Quote:
Originally Posted by hbganguly View Post
Hi...i am just trying to understand the pros of AVL fire though am familiar with AVL Boost...
can any1 throw some light on AVL fire? so that i can link the boost engine combustion models in AVL fire or what not... what stuff AVL Fire can do where Boost cant|????
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Old   September 19, 2012, 17:49
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Dear All,

Although I can simulate the case with Ecfm-3z combustion model,unfortunately I can not simulate the same case with Eddy break up combustion model. What is the problem,do you think? What can I do? Please help me.
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Old   November 27, 2012, 06:03
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Quote:
Originally Posted by sena View Post
Dear Saikrishna

I am still trying to obtain some simulation results with Avl Fire Ese Diesel.I am trying to decide my mesh number,so I firstly tried both 175000 meshes and 57000 meshes for the same case.If I donít see any differences between them,I will do my other runs with 57000 meshes faster.But,I would ask you one thing about it. How can I compare the velocities or pressures or anything else along a line? For example; can I see the velocities at the center of the piston along center at different points? I don't know how I can do this.Please help me.

Sena
The comparisons can be made using Impress in work flow manager. There are different options in impress to make cuts which will navigate you to select the options like pressure, velocity, temp etc... A movie can also be generated in Impress. To better work with internal combustions I would go with fame engine plus It is kinda fuzzy at the beginning but you will enjoy it later on.
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Old   November 27, 2012, 08:34
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Thank you for your reply .I did it already. I worked with Avl Fire Esediesel module.

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Originally Posted by hardykalyan View Post
The comparisons can be made using Impress in work flow manager. There are different options in impress to make cuts which will navigate you to select the options like pressure, velocity, temp etc... A movie can also be generated in Impress. To better work with internal combustions I would go with fame engine plus It is kinda fuzzy at the beginning but you will enjoy it later on.
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Old   March 17, 2013, 12:15
Default Avl fire ese diesel resume problem
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Hi all,

I'm working on AVL fire ese diesel module and actully I'm a very new user on it. After saving operation, I can not see my previous inputs. For example, I toggled the combustion model on and enter the all parameters and saved. But when I want to resume my model, I can not see combustion model toggle and my parameters there. But my previous engine parameters are still there but I dont know why just simulation parameters are missing.

Anyone can help me please on this ?
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Old   March 30, 2013, 13:18
Default Hello friend i am final year mechancal student
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i am doing my final year project on cfd analysis of direct injection diesel engine. for that i need a avl fire software and i cant afford to buy that software. i am so much in need of that software so kindly request u to where can i download the software for free atleast trial version .. plz tell me if u know .. plz plz............. also suggest me other softwares to do the project.
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Old   March 30, 2013, 13:27
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i am doing my final year project on cfd analysis of direct injection diesel engine. for that i need a avl fire software and i cant afford to buy that software. i am so much in need of that software so kindly request u to where can i download the software for free atleast trial version .. plz tell me if u know .. plz plz............. also suggest me other softwares to do the project.
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Old   March 31, 2013, 04:38
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i am doing my final year project on cfd analysis of direct injection diesel engine. for that i need a avl fire software and i cant afford to buy that software. i am so much in need of that software so kindly request u to where can i download the software for free atleast trial version .. plz tell me if u know .. plz plz............. also suggest me other softwares to do the project.
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Old   August 4, 2014, 15:42
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Hi dears
How can we choose the best value for Cfp?? for TFSC model
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Old   August 15, 2014, 10:45
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ABDUL GAFOOR CP
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hii sir,
i have also observed this divergence problem during my simulation of diesel engine combustion. what i understood by checking that cases, if the mesh cell size is too large there is more possibility to diverge the solution.
so please try on this...and let me know about the result..
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Old   August 15, 2014, 10:47
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ABDUL GAFOOR CP
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vikram sir,
i also posted some problems related to my solutions...please give a look on it and give me some suggestions...i am a master student doing my project in CFD
with regards
gafoor
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Old   March 3, 2015, 06:31
Default AVL FIRE ESE simulation initial condition...
  #34
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Rakesh
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Hi Sena & friends,

I am doing a piston bowl optimization study using AVL FIRE
Hw can I assign the initial condition like EGR composition ?
I had a AVL boost model of the same where i can get the EGR mass fraction (eg:-Res.gas content [-] 0.0681).
But hw can i assign EGR composition & Equivalent ratio??

Plz guide...


Quote:
Originally Posted by sena View Post
Hi All,


I have already done 1D analysis with Avl Boost.And now,I am trying to obtain some results with Avl Fire Ese Diesel. But I would ask you a question about it.My Air-Fuel Ratio is 16.86 which I saw on Avl Boost(1D analysis).But Avl Fire Ese Diesel gives me 37.4. I wrote in inital conditons on Avl Fire EseDiesel:

Egr Composition:0.0588
Egr Mass Fraction:0
Equivalence Ratio:0

How can I correct it to 16.86? The values donít keep eachother . But total mass from 1D analysis and 3D analysis keep themselves. Please help me...
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Old   July 16, 2015, 03:21
Default Heat Release rate
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Chetan S.
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Hello all.
I am doing my masters and need to validate an engine on AVL Fire.
I have nearly got P-theta diagram correctly.
But in Heat release rate I am facing problem.
Particularly in down slope of the curve and ignition timing.
What modification will help me ?
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Old   July 17, 2015, 10:32
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ABDUL GAFOOR CP
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chethan......pls send me the details to my mail...i will check.....
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Old   April 8, 2016, 06:25
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Mushtaq
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Hi. .I wanna simulate HCCI diesel engine using AVL Fire. .how can I get start
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Old   April 8, 2016, 06:28
Default Avl fire
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Hi. .I wanna simulate HCCI diesel engine using AVL Fire software package. .how can I get start
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