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SLACKHA / pyJac

Creates C and CUDA analytical Jacobians for chemical kinetics ODE systems
http://slackha.github.io/pyJac/
MIT License
52 stars 23 forks source link

v2.0: add option for constant volume assumption #4

Closed kyleniemeyer closed 5 years ago

kyleniemeyer commented 9 years ago

This isn't necessary for the initial release, but for v2.0 it would be good to add the option to do everything assuming constant volume, rather than only constant pressure as is currently the case.

This would be useful for internal combustion (e.g, reciprocating engine) simulations, in particular.

haowu80s commented 8 years ago

This is a rather important issue. When using these tool for CFD simulation with operator splitting, whether to use constant pressure or constant volume depends on if we are solving energy or enthalpy equation. The choice of using energy equation is particularly popular for compressible solver as it is conservative. Thus, constant volume is desired.

skyreflectedinmirrors commented 8 years ago

Hi, we are currently developing a new set of equations that will result in a sparse Jacobian (and will therefore benefit from sparse linear algebra methods). This will include a constant volume option

haowu80s commented 8 years ago

Hi, Any plan on how soon the new development will be releases?

skyreflectedinmirrors commented 8 years ago

@haowu80s

The beta should be released within the next few months, with the paper following shortly after

kahilah commented 7 years ago

Hi,

Any updates regarding the status/release of the sparse formulation? Keep up the good work :) !

skyreflectedinmirrors commented 7 years ago

@kahilah

It's still "on the way". We presented our progress at the NCM a few months ago, and I've uploaded the presentation to figshare if you'd like to take a look!

kyleniemeyer commented 7 years ago

Hi @kahilah, if you are interested, we just created a Groups.io-based user group for the SLACKHA project, which includes pyJac: https://groups.io/g/slackha-users (I would invite you directly, but don't know your email)

kyleniemeyer commented 7 years ago

@kahilah scratch that, I found a prior email from you!

kahilah commented 7 years ago

Thanks for the slides and invitation to the group. User-group is a good idea!