BOSfluids 7.1: Improved support for modeling gas-filled systems

The release of BOSfluids 7.1 brings improved support for modeling gas-filled piping systems. The addition of a new Custom Gas type, for instance, enables you to specify a complete equation of state in the form of a table listing all relevant gas properties as a function of both the temperature and pressure. The BOSfluids user interface will display those properties as a series of curves with either a constant pressure or temperature.

In BOSfluids 7.1 the AGA Report No. 8 Part 1 equation of state has been replaced by the AGA Report No. 8 Part 2 equation of state. The latter involves the GERG-2008 method that covers a larger range of pressures and temperatures. Moreover, the GERG-2008 has no restrictions on gas compositions and can therefore also be used for single-component gases. This greatly extends the applicability of the AGA-8 equation of state.

The new Compressor element type models the flow of a gas through a centrifugal or axial compressor. A Compressor element requires the specification of a compressor map with a least one speed line. You can optionally specify a surge and/or choke line to determine when and for how long a compressor operates in surge or choking conditions.


Furthermore, we would also like to inform new and future users that our “Water hammer/surge analysis using BOSfluids” training course is available as an online training course. For more information on this course and other courses please visit us on


For more information on BOSfluids licenses and pricing, please contact:

Software Sales

+31 85 058 00 46

or request the demo version.

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