BOSfluids New Features

Improved pump model

The user input for specifying pumps have been improved as well as the pump model used by the flow solver. Pump curves with more than three points can now be specified to improve the accuracy of the pump curve shape. An additional “rated flow” can be specified, which improves the behavior of the spin down after a pump trip.

Improved accuracy of fluid properties and AGA8 tool

Support for defining gas/liquid properties as a function of the temperature. This can be used to get the correct wave speed in each pipe element if the temperature in a model varies significantly. Addtionally BOSpulse now also supports defining gas properties using the procedure described in the AGA Report No. 8, Part 1 (April 2017).

Improved mechanical response coupling

Support for exporting the unbalanced forces to Bentley AutoPipe. This makes it possibly to perform a mechanical response study with AutoPipe using the unbalanced forces calculated by BOSfluids.

The existing coupling with CAESAR II has been improved. The dynamic stress input file can now be automatically made, so that the user does not have to manually specify the entries in the CAESAR II user interface.


General reduction in modelling effort and improved accuracy

Most fields that handle numerical values support now support simple equations. This helps users to quickly calculate area’s when the diameter is known, inner diameters from subtracting the wall thickness from an outer diameter etc. without having to manually calculate these entries.
In addition the fields that handle lengths now also support feet-inch notation. Specifying a length in inches automatically converts to feet-inch if appropriate.
BOSfluids now also supports general undo/redo including a history of all changes made to the model which helps to quickly go back to an earlier state.
A Bill of Quantity can be generated, to provide a quick overview of all piping/equipment in the model.

Full Release Notes

Version 5.5

Improved support for user-defined fluids

  • Support for specifying the physical properties of user-defined liquids and gases as function of temperature so that a more accurate wave speed can be calculated for models with significant temperature variations;
  • Support for a new user-defined gas using the methodology described in the AGA Report no. 8. This allows the user to specify the composition of the natural gas.

Improved pump model

  • Support for specifying pump curves with more than three points;
  • Support for specifying the rated flow rate associated with a pump curve. This improves the accuracy of pump trip/stop scenarios.

Improved user interface

  • Support for undoing (and redoing) changes made to the model;
  • Support for a user-defined ambient pressures;
  • Support for specifying pipe lengths in feet and inch;
  • Support for entering simple equations in addition to literal values;
  • Support for displaying a Bill of Quantity listing all components that make up the model.

Improved support for pipe stress analyses

  • Support for exporting the unbalanced forces to Bentley AutoPIPE;
  • Support for creating a setup file (a so-called 7 file) for the CAESAR II dynamic analysis module;
  • Support for exporting the unbalanced forces to a CAESAR II FRC file that can be used to perform a quasi-static pipe stress analysis.
Version 5.4

New axial check valve model

  • Aimed to model check valves with an axial closing mechanism;
  • Revised swing check valve model.

New external file interfaces

  • Support for Piping Component Files (PCF);
  • Support for comma-seperated (CSV) text files;
  • Improved Caesar II neutral file interface.

Support for symbolic model parameters

  • Specify model parameters using symbolic definitions;
  • Aimed to adjust multiple model parameters at once.

Support for multiple processor cores

  • Support for running multiple scenarios on multiple processor cores;
  • View the availble results while another scenario is being processed.

Solver improvements

  • Improved ”Input Echo” report;
  • Improved overall accuracy of the results;
  • Increased the maximum model size.

Improved handling of force pairs

  • Automatic defined force pairs;
  • New report ”Force Pairs” lists all defined force pairs.

Improved user interface

  • Improved display of results in 3D viewer;
  • Improved handling of long scenario/group names;
  • Improved scenario managment;
  • Support for entering nominal pipe sizes and pipe schedules;
  • Support for copy/past operations in tables.
Version 5.3

New pump model

  • Support for specifying multiple pump curves;
  • Support for specifying a pump speed curve;
  • Improved pump shutdown algorithm.

New Pipe Line element

  • Aimed at quick pressure drop calculations;
  • Models a complete pipe line section including bends, valves and other types of elements.

Solver improvements

  • Improved, dynamic flow friction model;
  • Improved calculation of unbalanced loads;
  • More accurate pipe segmentation algorithm;
  • Improved tube rupture model.

Support for saving 2-D plots

  • Save the setup of a 2-D plot to a model file;
  • Recreate all saved plots after running a new simulation;
  • Export all saved plots to multiple image or data files.

Improved input and output

  • Handle CAESAR II version 7 neutral files;
  • Show a warning when saving a model in a new version;
  • Better handling of errors while reading a results database.

Improved user interface

  • Improved layout of the Scenarios tab;
  • Support for duplicating groups of elements;
  • Use the global F5 shortcut key to run a simulation;
  • Improve the handling of elements of type None;
  • Change of some English units to better adhere to industry standards;
  • Support for generating valve opening curves, pump speed curves, and other types of curves;
  • Support for specifying an intermediate node when setting up a profile plot.
Version 5.2

Change in the top-level tabs

  • 1 Piping to build the piping model;
  • 2 Scenarios to define the models parameters for the various scenarios;
  • 3 Run to run the simulation;
  • 4 Results to view the computed results.

Support for exporting to BOSview

  • Export results per scenario;
  • Send a pruned results file to clients, without revealing model parameters;
  • Clients can download the free standalone application BOSview;
  • Clients can see the piping model and results in a similar way as users do in the Results tab.

Improved valve model and configuration

  • New possibility to enter the valve flow characteristic, relating the flow coefficient to the valve opening;
  • In addition to the discharge coefficient Cd, the possibility to specify the flow coefficient either as Cv or Kv.

New analysis features for the results tab and viewer

  • New option to show the global maximum and minimum values during the entire simulation in the 3-D viewer;
  • A min-max plot which shows the global minimum and maximum values for each node sorted from the largest to smallest value;
  • Possibility to make the 3-D viewer zoom into a certain node by double clicking that node in a profile plot or min-max plot;
  • Possibility to show the path of a profile plot in the 3-D viewer or show the shortest path between two nodes using the new ruler tool.
Version 5.1

Extended possibilities to edit models

  • merge two or more adjacent elements into a single element;
  • break down elements into smaller elements;
  • rotate or mirror elements;
  • delete multiple elements in one action;
  • renumber multiple nodes.

Actions window

  • overview of all transient actions;
  • double click to directly edit the transient actions for the selected element.

Extended output features

  • maximum pressure data set to make sure the highest pressure peak during the entire simulation is captured in the output;
  • possibility to define targets for output results and receive a warning if the targets are not met.

Extended import/export features

  • possibility to extend the current piping model with additional piping geometry;
  • possibility to update a current piping model, where only the piping geometry is updated while the specific BOSfluids elements, such as valves and analysis settings are preserved;
  • load/save tables from/to files.
Version 5.0

Since version 5.0, BOSfluids includes a new user interface. This changed the way models are built and results are analyzed. These changes considerably improved the overall user experience with the software.

Improved user interface

  • intuitive guidance through the analysis process using numbered tabs;
  • improved organization and grouping of functions;
  • clear highlighting of options that require input;
  • continuous check for correct input values.

3-D Interface

  • interactive visualization of the model while it is built;
  • clear and intuitive node numbers, labels, rotating, color settings, element visualization, etc.;
  • editing options to select, alter or insert (groups of) elements from the viewer.

Groups and labels

  • creation of standard and custom element and node groups;
  • simultaneous editing of elements at the group level;
  • labeling of elements and nodes for easy reference during post-processing.

Scenario Builder

  • support for creating multiple variations on a model;
  • bundling of all scenarios into one input file and one results data base.

Import/Export features

  • import CAESAR II models in BOSfluids;
  • export BOSfluids models to CAESAR II;
  • export BOSfluids unbalanced force pairs to CAESAR II;
  • import pre-version 5.0 BOSfluids models.

Improved post-processing

  • 3-D movies of transients;
  • 2-D graph manager to plot (several) results in one graph;
  • animated profile plots;
  • improved scale settings;
  • new database structure for storing all output in one file;
  • improved reporting.

Improved solver interaction

  • small errors in the solver have been solved;
  • reduced simulation time;
  • support for running multiple scenarios with one action.

Documentation available on the website

  • elaborate tutorials including theoretical background;
  • video demonstrations of new features.