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Any Software Testers Interested

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#1 SilverShaded


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Posted 24 January 2021 - 11:44 AM

Some Background:


Lockdown has given us all lots of spare time were we are bored out of our minds (at least some of the time).  To that end i started playing around with some old distillation column code i had and made some improvements and put together a simple process simulator.


The main improvements are that it is 'generally' not neccessary to enter estimates for any column conditions for the column to solve. (at least for the columns i've tried).


The code has been optimised to some extent and basic stream flashes are fast (~2ms for a crude flash with 80 components), columns generally solve in a few hundred ms.


Currently it has a basic Hysys/Petrosim/Unisim style interface and works i'm a roughly similar way (although a myriad of improvements are of course possible).


However, this is 'a work in progress' and doubtless has plenty of annoyances, bugs and things that are just plain daft.


What i'm wondering is if anyone would be willing to help test it?  Not right now but possibly in a few months time.


My current aim is to get a crude and vacuum column flowsheet running sucessfully and once that's done it would be nice to get feedback on things like bugs and column configurations that fail to solve etc...  After that some basic petyluk columns are on the waiting list for testing.


If anyone might be interested please send me a message :)


Thanks for reading this.







#2 StealthProg


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Posted 29 January 2021 - 11:24 AM

Hi, I might be interested to help can you tell us a bit more about the software?

#3 SilverShaded


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Posted 02 February 2021 - 02:30 AM

Hi Stealth!


Sure, the program (or versions of it) actually has a fairly long history but has never been publically available.  My interest in simualtion started back in the mid 80's with the devleopment (as far as  know) of the worlds first object orented simulator.  However due to the IP and copyright onwership restrictions at the time it was never publically available.  The current program is a a total rewrite using a combination of standard thermodynamic methods, publically available data and some IP developed by myself over the previous decades.  In additon to that some of the solver methodology has been borrowed from the excellent Sim42 open source project that was around about 20 years ago.  The main part borrowed from those algorithms was the concept of a forget pass, orginally I had not used a forget pass but instead propogated empty values around the flowsheet with the idea that it would be less computation time not to have to re-calculate verything on every pass.  However, the forget pass simplifies the whole thing so I went that way for the moment.


The program is not open source, although it may be downloadable for free, eventually, when i think the quality and reliability is good enough.


Currently it has a substantial component database, a fully working assay manager, and most of the basic unit operations.  I am currently working on upgrading the interface around complex column configurations (e.g. Columns with side strippers/pumparounds and eventually petyluk columns) the solver is working via script input and the interface needs to be properly connected to it.


Some of the IP that will not be made public is around the column solving aglorithm which has been developed to be far more robust than most commercial simulators.


In the case of Peng-Robinson, results for common compounds, e.g. gases, light hydrocarbons are identical to Hysys.


Im looking for people to help test it, I guess the benefit is you will get a copy of the software and free use.  Testing is really important to iron out any remaining bugs with all the different column confiurtaions that are possible and different therm methods, Peng-Robinson is thoroughly tested but some of the others are so tested yet.


Some Screen shots below;









Edited by SilverShaded, 02 February 2021 - 03:23 AM.

#4 SilverShaded


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Posted 03 September 2021 - 06:56 AM

Kinetic Reformer Model now added!  Kinetic Isomerisation Model to follow.

Attached Files

Edited by SilverShaded, 03 September 2021 - 06:58 AM.

#5 horatorres


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Posted 09 September 2021 - 12:14 PM

I can help you to test the software



#6 SilverShaded


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Posted 15 September 2021 - 04:42 AM

I can help you to test the software



Yeah that would be great, theres probably a lot of very obvious bugs in it write now that i could easily fix if i had a list.

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