PASS Team is pleased to announce release of a new PASS/HYDROSYSTEM version. The software combines sophisticated calculation capabilities to deliver fluid flow and heat transfer simulation and sizing of piping networks. PASS/HYDROSYSTEM 4.5 includes a lot of significant enhancements. Among the most important of them are the following ones:
1. Slug flow parameters (size, frequency, speed of slugs, etc.) for gas-liquid flow can now be calculated and reported using TUFFP Unified model. Forces in elbows and flow-turns caused by gas-liquid slug flow are now calculated and can be exported to PASS/START-PROF software for accounting them in piping stress analysis.
2. Several improvements have been made to the calculation of gas-liquid flow using the TUFFP methods:
3. Selecting methods for two-phase flow calculation becomes easier – now along with loading the XML file with calculation settings, one can select a ′typical′ two-phase flow calculation profile from the list.
4. Improvements have been made to the calculation of ′settling slurry′ flow:
5. Added the thermal calculation of underwater pipelines.
6. Some improvements have been made to the thermal analysis of pipelines, including more accurate calculation of ′internal′ heat transfer coefficient; improved heat transfer analysis for fittings, bends and other elements of the pipeline; more accurate thermal analysis in the rare case of gas laminar flow.
7. The insulation materials database (with materials according to ASTM standards) has been added to the program to allow a user both entering materials properties manually and to select insulation and cover materials from the database.
8. Working with ′disconnected′ piping systems (consisting of two or more fragments physically not connected to each other) is now enabled. Disconnected pipelines may be also imported from PCF or PASS/START-PROF files. A new ′Connect nodes′ function has been added that connects any two pipeline nodes with a branch, containing a pipe section (the length and direction of the section are calculated automatically). This function is very useful for connecting of disconnected fragments in a pipeline.
9. Piping model export to PCF files has been added (these files can be used then for import into other 3D modeling systems and/or for generation of isometric drawings). Several improvements have also been made to the PCF files import, including import of equipment and elements names.
10. Piping element selection on piping diagram now has a new feature: by right-clicking on a component/node/etc. one can select not only the element itself, but also the branch/fragment of the pipeline it belongs to.
Other improvements include updated versions of import modules from AVEVA PDMS, E3D and MARINE, and embedded Combit List & Label report generator; as well as some improvements of the calculation speed of GERG-2008 thermodynamic library.
Visit the Knowledge Base to learn more about PASS/HYDROSYSTEM 4.5 capabilities!
All users with active Maintenance Support are recommended to download the new software version.