Dear all, I am trying to un
 

Dear all,

I am trying to understand the PaSR model implemented in reactingFoam, anybody knows any reference paper?

Regards,

Daniele

Hi Daniele, I have some mate
 

Hi Daniele,
I have some material about the Partially Stirred Reactor Combustion Model. If you send me an e-mail, I can give you some references
Bye
Tommaso

Dear Tommaso Could you giv
 

Dear Tommaso
Could you give some references about
the Partially Stirred Reactor Combustion Model.

cfdfans@163.com

thank you very much!

qf

Hello Tommaso, I'm also int
 

Hello Tommaso,

I'm also interesting in Partially Stirred Reactor model and its cfd implementation.
Could you send me some references/informations about it?

Is this model the same defined as MIL (lagrangian intermittent model), proposed by Borghi?

Can it be used for nonpremixed combustion?

Thank you for your attention!!!

Michele

Hi Michele, the partially
 

Hi Michele,

the partially stirred reactor is basically a modified version of the Eddy Dissipation Concept by Magnussen to account for turbulence/chemistry interaction. Please have a look to the following article:

"Flame lift-off in Diesel Engines" by Karlsson and Chomiak published in the proceedings of the combustion institute (I can send you a copy if you need).

The PaSR model is generally used for turbulent non-premixed combustion. However, there are different interpretation of the chemical time scale tc and they can play a strong influence on the results.

Can I have some references to the MIL model by borghi?

Thanks a lot, bye

Tommaso

Dear Tommaso, can you send me
 

Dear Tommaso,
can you send me a copy of the Karlsson paper?

The reference for MIL model is:
Borghi R. Turbulent combustion modelling, Prog Energy Combustion Sci 1988; 14:245-92

I do not have this paper, but I've read something about it from the work of Veynante and Vervish (Progress in energy and combustion science 28 2002 193-266).

The MIL model is based on a calculation of the ignition time by means of a PaSR calculation, and the mean burning rate is obtained from the integration of a pdf function dependent by this time.

Thanks a lot,

Michele

Hi Tommaso, can you send me
 

Hi Tommaso,
can you send me a copy of "Flame lift-off in Diesel Engines" by Karlsson and Chomiak.

My e-mail is vascellari@dimeca.unica.it

Thank you for your help

Michele

Hi Tomaso Do you know if I
 

Hi Tomaso

Do you know if I can use the XI-b partial premixed model to calculate non-premixed combustion flow. I'm reading the Henry Weller's report and is not clear for me if I can do it or not.


Tanks in advance!

Wladimyr

Hi Wladimir, the Weller com
 

Hi Wladimir,

the Weller combustion model is for PREMIXED COMBUSTION, since it divides each computational cell in two zones:

b = 0: fully burnt (burnt gases).
b = 1: fully unburnt (air+fuel).

The flame propagation speed is proportional to the flame wrinkling (Xi) and to the laminar flame speed. The flame wrinkling depends on the turbulence intensity.

In non-premixed combustion, the flame propagation is mainly influenced by mixing. Models for non-premixed combustion usually account for the presence of fuel, air and burnt gases in each computational cell.

I can send you the Chomiak and Karlsson paper. However, you should have a look to the following books:

Theoretical and Numerical Combustion by Poinsot and Veynante

and to

Turbulent Combustion by N. Peters

They should be very helpful to understand which model is more suitable for your case.

Regards

Tommaso

Dear Tommaso I am working o
 

Dear Tommaso
I am working on composite propellant combustion, would you please offer me some references about
PaSR model.

ahking520@gmail.com

thank you in advance!

Tommaso, Hi. I was wondering
 

Tommaso,
Hi. I was wondering if you could send me some additional information regarding the PaSR model.

jhand085@uottawa.ca

Thank you in advance!

John Paul Handrigan

Hi Tommaso Can reactingFoam
 

Hi Tommaso

Can reactingFoam solve for a deflagration to detonation transition ? ( characterize a standing detonation wave in a reacting flow ) or no ?

Maybe Xoodles can do this...? The idea is that the increase in pressure caused by the DW causes the non reacted premix to ignite, if the non reacted flow flows with a supersonic speed, since the Detonation wave travels at most at the sound speed of the detonation products, i guess that either reactingFoam or Xoodles could allow me to simulate this...

Am I right here...?

Thanks for your help

Best regards

Alex

Hi Tommaso Can reactingFoam
 

Hi Tommaso

Can reactingFoam solve for a deflagration to detonation transition ? ( characterize a standing detonation wave in a reacting flow ) or no ?

Maybe Xoodles can do this...? The idea is that the increase in pressure caused by the DW causes the non reacted premix to ignite, if the non reacted flow flows with a supersonic speed, since the Detonation wave travels at most at the sound speed of the detonation products, i guess that either reactingFoam or Xoodles could allow me to simulate this...

Am I right here...?

Thanks for your help

Best regards

Alex

Deer Tommaso,
Hi. I was wondering the PaSR model in OpenFoam. Is it same as Fluent PDF method? Can u give me some hint?
bobo1314@126.com


Thank you in advance!

Xu Bo

Hi Xu B,

no the Chalmers PaSR is entirely different from the PDF approach. It is rather related to EDC. For more information look at the thesis of Fabian Peng Karrholm here:

http://powerlab.fsb.hr/ped/kturbo/OpenFOAM/docs/

or check the code in chemistry.H of the reactingFoam solver.

Regards, Markus.

Chomiak and Karlsson paper
 

Hi Markus,

I would really appreciate if you could send me the " Chomiak and Karlsson paper". my email is: yafarin@gmail.com

Best regards

Hi dear fomers

As you may know, reactingFoam suppose that the Lewis, prandtle number and schmidt number are equal one. so the each species transport equations are as shown in the Yeqn code.
Has anyone used "binary mass diffusion coefficient" in the Yeqn equation?
I would appreciate it if someone could help me to use reactingFoam with different diffusion coefficient.

Kind Regards,

Hello Tommaso,

I'm also interesting in Partially Stirred Reactor model and its cfd implementation.
I was wondering if you could send me some additional information regarding the PaSR model.
Could you send me some references/informations about it?
Thank you in advance,

camille@ccii.be