Version Info

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Version 7.6: Released Summer 2021


There were two significant bug fixes to the EoS calculation code. Apart from these, this version will return the same results as previous versions. There are several new EoS types in all programs and several new utilities in the EosFit7c program.


Eos files created with the previous version (7.5) will be read correctly by software of this new version.  Some .eos files from earlier versions may not be read completely correctly, so please check the listed parameter values carefully. If necessary (e.g. with very old .eos files for PVT) use the input utility to input new parameter values. 


After release it was found that a bug in the graphics library could cause the Mac version of EosFit-GUI to crash. A new version for Mac was released in November 2021, but is identical to the summer 2021 versions apart from this bug fix. See the Mac installation page for details. 








Version 7.5: Released August 2019


There were no significant bug fixes to the EoS calculation code, so this version will return the same results as previous versions, except for extremes of P and T where new tests have been introduced to stop calculations where the EoS becomes physically invalid. 


Eos files created with the previous version (7.4) will be read correctly by software of this new version.








Version 7.4: Released June 2017


There were no significant bug fixes to the EoS calculation code, so this version will return the same results as version 7.2 and 7.3







Version 7.3: Released May 2016


Combined  installation package for each operating system, which contains  EosFit7c,  Eosfit7 GUI and the Eosfit7-calculator. During the installation you can choose which programs to install.






Important: with the exception of the change to phase transitions, all .eos files from old versions will work with this version of EosFit7.





Version 7.2: Released March 2015


This version provides new and improved user facilities to the console and GUI programs:









Versions 7.0 and 7.1


This is a significant development beyond the previous EosFit v5.2 (Angel, 2000a):








Important: the definition of the parameters of linear EoS has changed from EoSFit v5.2! The definition of the finite strain for the Vinet and Natural strain EoS has also been changed from EoSFit v5.2! See the 'theory' section for details!