solid rocket combustion

nadjibe · February 24, 2013, 16:13

hi every body, i want to simulate solid rocket combustion but i dnt know any thing, help me please, should work whith ansys fluent? wich model of combustion.......,mesh.... help me please

diamondx · February 24, 2013, 21:59

tutorial on how to mesh and how to perform simulation are included in fluent.

nadjibe · February 26, 2013, 00:41

merci ali je vais voire tutoriel, c tres gentil

nadjibe · February 26, 2013, 14:30

salut ali, pouvez vous me donner votre adresse email car j'ai quelque questions a poser sur la combustion? merci pour votre aide.

nadjibe · April 29, 2013, 14:51

hi ali how r u? i want please how i can modeler the propellant combustion please

diamondx · April 29, 2013, 14:59

what's a propellant combustiion ??

nadjibe · April 29, 2013, 15:26

the rocket solid propellant ammonum perchlorat with binder HTPB OR PVC OR PMMA, and miniral ingrediants. first what is the model in ansys must be used? what about the pyrolisis model solid gaz?, boundry conditions? turbulence...

A CFD free user · April 29, 2013, 15:33

Hey
I can tell you that it's a very big headache. That's it.

nadjibe · April 29, 2013, 15:44

thank's for all

diamondx · April 29, 2013, 15:45

i've never done solid combustion. not sure i can help you with it. use the search option in the forum

Far · April 29, 2013, 17:03

I have worked on solid rocket propulsion using Fluent when I was co-supervising MS project.

There are many problems that need to be addressed:

1. There is no inlet

2. solid particle get eroded due to combustion and depleted at different rates from different surfaces of fuel and that must be included in simulation

3.The first change to liquid and ultimately to gaseous phase. So all these phases must be modeled. How? I don't know.

4. The combustion models in Fluent assumes fuel to be gas or in liquid phase and no option for solid.

In short you may be required to implement your own model in Fluent, which somebody added for their research at some US lab, but it is not available in open literature.

nadjibe · May 2, 2013, 13:38

thank you ( no inlet????)

Far · May 2, 2013, 15:10

Quote:

Originally Posted by nadjibe

thank you ( no inlet????)

Well we thought that once combustion is started (no fuel is injected, every thing is inside) , so there is no inlet. What do you think?

nadjibe · May 3, 2013, 02:52

i m agree whith u but the problem in balance equations how can i do?

kookguy · March 3, 2014, 07:23

I guess, if you are just modelling thrust and instability, knowing an approximate regression rate, you might be able to simulate the solid propellant using the product of combustion in the liquid/gaseous form. (Or premix air/fuel and inject radially along the propellant surface).

My question is how would you specify the fuel species in fluent. I am really new to this program.

February 24, 2013, 16:13	solid rocket combustion	#1
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	hi every body, i want to simulate solid rocket combustion but i dnt know any thing, help me please, should work whith ansys fluent? wich model of combustion.......,mesh.... help me please

February 24, 2013, 21:59		#2
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	tutorial on how to mesh and how to perform simulation are included in fluent. __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

February 26, 2013, 00:41	combustion du propergols solide	#3
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	merci ali je vais voire tutoriel, c tres gentil

February 26, 2013, 14:30	rocket combustion modeling	#4
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	salut ali, pouvez vous me donner votre adresse email car j'ai quelque questions a poser sur la combustion? merci pour votre aide.

April 29, 2013, 14:51	dear ali	#5
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	hi ali how r u? i want please how i can modeler the propellant combustion please

April 29, 2013, 14:59		#6
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	what's a propellant combustiion ?? __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

April 29, 2013, 15:26	hi ali	#7
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	the rocket solid propellant ammonum perchlorat with binder HTPB OR PVC OR PMMA, and miniral ingrediants. first what is the model in ansys must be used? what about the pyrolisis model solid gaz?, boundry conditions? turbulence...

April 29, 2013, 15:33		#8
A CFD free user Senior Member A-A Azarafza Join Date: Jan 2013 Posts: 226 Rep Power: 14	Hey I can tell you that it's a very big headache. That's it. __________________ Regard yours

April 29, 2013, 15:44	thank's	#9
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	thank's for all

April 29, 2013, 15:45		#10
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	i've never done solid combustion. not sure i can help you with it. use the search option in the forum __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

April 29, 2013, 17:03		#11
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	I have worked on solid rocket propulsion using Fluent when I was co-supervising MS project. There are many problems that need to be addressed: 1. There is no inlet 2. solid particle get eroded due to combustion and depleted at different rates from different surfaces of fuel and that must be included in simulation 3.The first change to liquid and ultimately to gaseous phase. So all these phases must be modeled. How? I don't know. 4. The combustion models in Fluent assumes fuel to be gas or in liquid phase and no option for solid. In short you may be required to implement your own model in Fluent, which somebody added for their research at some US lab, but it is not available in open literature.

May 2, 2013, 13:38	thank's	#12
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	thank you ( no inlet????)

May 3, 2013, 02:52	hi ahmed	#14
nadjibe New Member sadane Join Date: Feb 2013 Posts: 11 Rep Power: 13	i m agree whith u but the problem in balance equations how can i do?

March 3, 2014, 07:23		#15
kookguy New Member Guy Join Date: Sep 2013 Posts: 10 Rep Power: 12	I guess, if you are just modelling thrust and instability, knowing an approximate regression rate, you might be able to simulate the solid propellant using the product of combustion in the liquid/gaseous form. (Or premix air/fuel and inject radially along the propellant surface). My question is how would you specify the fuel species in fluent. I am really new to this program.

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