solid rocket combustion
 

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

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

combustion du propergols solide
 

merci ali je vais voire tutoriel, c tres gentil

rocket combustion modeling
 

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

dear ali
 

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

what's a propellant combustiion ??

hi ali
 

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...

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

thank's
 

thank's for all

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

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.

thank's
 

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?

hi ahmed
 

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

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.