I want to model a gas turbine combustor. Air enters the domain and passes a swirler. Downstream of the swirler diesel fuel is injected by a spray nozzle. My question: What Code is preferably used to model this problem? (I have already modelled some complex flows in Star-CD and Fluent 5/6. But they were all non-reacting, single phase flows.) Could anybody please comment on this? Thanks a lot!

AVL FIRE? http://www.avl.com/wo/webobsession.s...jExNzQ_3D.html

Thanks for your advice! But the choices are limited to Fluent, CFX or Star-CD. There are no other licenses available...

Hi,

Have a look at the CFX-RIF package as well. That may be useful. All the leading CFD codes will be able to model the flow. As for which is best - that is harder to answer. You will have to trial them and find out. Also talk to support as they know the software the best and can give you a head start.

Of course, if you are on an academic (or pirated!) license then your access to support is limited or zero. You get what you pay for!

Glenn Horrocks

Thanks for the input! I think I'll stick to Fluent, because I know the interface. The PDF-Approach seems the way to go. I just asked for advice because I'm totally new to combustion modelling - so why not get used to another code? The licenses are academic indeed...

Hi,

As I previously mentioned I think you should also have a look at CFX-RIF. This package will allow you to generate flamelet libraries for the CFX solver to use in the combustion model. It can handle just about any fuel/oxidiser mixture and therefore more accurately capture the chemistry of the combustion. Whether this is more appropriate than a PDF approach depends on your application but I strongly suggest you have a look at it and be aware of what it can do.

Glenn Horrocks