SteamTables v1.0 is now available. I have added option physical unit support via the excellent Unitful.jl.
I dropped support for <v.1.0, simply because I am no longer maintaining a copy to check if something gets broken.
Equations for the meta stable region are included, but not exported. If someone actually uses those and has an idea for a sensible interface, let me know and I’ll happily implement it. I’ve never designed or modelled turbines, so I have no idea how these are used in real life.
I had lots of fun building this, but hey, these are steam tables and I really don’t have ideas for fancy additional features. I’ll make sure this package keep working, since I actually use it in my day job. If you want/need a feature that is not included, feel free to let me know, or better still, make a PR.
Nice! I have an implementation of IAPWS95 (and GERG2008) , but I I’m struggling a bit with the equilibrium solver part (I’m trying to do a multiphase, multicomponent equilibrium solver for helmholtz equations of state).
First, vapor tables. Next, hysys.jl
I using an strategy for a recent paper, it proposes a framework for equilibrium in VT, PT, UV flash specs. in a nutshell, tries an amount of random points and search for instability. If there is, an instability, adds a phase. Then it proceeds to calculate equilibria. After the equilibrium calculation, checks a phase if it is inestable, if it is, it removes it… And it does that until all the phases are found.
I want to implement more EOS too, as, given an helmholtz molar energy equation, i can calculate all the properties via derivatives (currently using Forwarddiff),
I have critical data of the DIPPR 2018 (2197 compounds) in my repository, if you need values
Michaelsen uses the K-value updating and the rachford-rice equation, it works well, but it’s only two-phase, and requires the inicialization of the K-values(using Wilson correlation) . The future idea is to use the same algorithm with predictive equations (SAFT), so the minimal information is required.
I wish this was around when I did my PhD! I needed a water P–V–T relation for some planetary structure models but I ended up writing my own based on IAPWS. It was certainly not what I wanted to spend my limited research time doing.
Could you commit some of your work to the repo? I could also take some time to help with the equilibrium solver.
As for the original topic, I like SteamTables, and in fact I used it recently to design a heat exchanger for a class project. Which forced me to get a bunch of heat exchanger design code working in Julia, and I may turn that into a working package someday.
I think that would be great! I do molten salt chemistry which is a bit specialized, and that makes Julia pretty great for my purposes (turns out Aspen doesn’t have thermodynamic data for nonaqueous mixtures of fluorides and chlorides )
let me order a bit, for now i have two good stability tests for P-T-N and V-T-N equilibria, the second one can generate an initial point (like the wilson correlation and its more general)
How would you feel about a Github group for process modelling? We could all contribute bits and bobs that may be useful to others.
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