Hi Ale,

Sorry for the late reply but I've been really busy recently.

For the turbulence intensity I would suggest using around 5-10%.

With regards to the target mass flow rate test it to see if the solution remains stable and if not I wouldn't use it.

Neil

Hi Neal!

Thanks for your reply and don't worry... in the meantime I was working on a side project for a swirl burner (...still RSM!)! And I'm trying to get OpenFOAM installed on an idle machine too. I found some interesting posts in the forum and I'd like to have a try... Do you have any experience about it?

As for the pressure outlet b.c. for the mixing station I would like to try a procedure:
1. Turn on the target mass flow rate option for few iterations, in order to have a first value for the pressure at the outlet;
2. Turn off the option and correct the pressure value with the new estimate.
I hope this could help..!
With regards to the turbulence intensity I will use the values you suggested.

Anyway I'll let you know if convergence will be improved!

Bye bye!


Ale

I have some experience with modelling reactive flows in cyclone combustors for which the case setup is similar and I can try and help out but there are bound to be more experienced people on this forum.

Cyclone combustors??
But this sounds very similar to the side project I'm working on!! And I guess your experience is much more than what I deserve! ;)

Anyway I'm still trying to complete installation correctly, because I don't have experience with Linux OS! Meanwhile, I'm learning something more about Ubuntu!

But I will share willingly anything about it as far as I get a functioning OpenFOAM on my machine..!

...let's hope!

Now I'm still meshing some alternative designs for testing them on Fluent as usual. After that I will have to select a design for prototyping ad testing at full industrial scale. And then, when I will have some experimental data, I hope to compare Fluent and (hopefully!) OpenFOAM predictions on the same mesh exported from Gambit.
I think it will be really interesting!


So thanks for your support!