==== AFT xStream (Version Date 2021.11.16) Release Notes ==== This file contains the changes that have been made to xStream *** Changes for Version Date 2021.04.12 *** None: Initial Release *** Changes for Version Date 2021.06.15 *** >> Changes to computation logic that could impact results << 1. Difference Exit forces incorrectly accounted for ambient pressure on the nozzle area. This has been corrected to only include the momentum force. The ambient pressure force is balanced on the other side of the difference pair. 2. Fixed elevation changes along pipes not being accounted for correctly. The sign of the elevation change was not correct, so elevation increases would mistakenly show an increase in energy down the pipe. >> Changes to data management that could impact results << 1. None. >> Changes that do not impact results << 1. Fixed an issue where the Graph Parameters Form was not reinitializing properly when changes are made to the model. 2. Fixed some PDF/RTF export issues for Print Preview. 3. Fixed an issue where the format menu for Graph titles was showing scaling values. Setting the values would cause an error. 4. Fixed an issue where custom plot names are not showing for stacked graphs. 5. Added function for Materials linking with Import Piping Layout. 6. Fixed an issue where the 'Special Condition' menu item was not functioning properly. 7. Fixed an issue where renaming a scenario below the current scenario on the scenario tree would deactivate the current scenario. 8. Fixed an issue where the Graph format menu would appear on the wrong screen. 9. Fixed a color map refresh issue for Visual Report. 10. Fixed the crosshair label for graphs to show the correct parameter 11. Fixed an issue that prevented the Overview Map from opening. 12. Output will no longer clear when OK is clicked in Analysis Setup when no changes were made. *** Changes for Version Date 2021.08.26 *** >> Changes to computation logic that could impact results << 1. None. >> Changes to data management that could impact results << 1. Fixed a problem with reporting Kv and KvEst for Control Valves that did not have a fully open value. The Kv value should not be reported. 2. Fixed issue where negative force values did not meet CAESAR II's required format when exporting forces. 3. When using the PFA module, a check for simulation length and section count during run time was made using the user defined cutoff frequency rather than the actual effective maximum sampling frequency. This resulted in a mismatch between user set simulation times and actual times, potentially causing longer run times than actually required. This impacted the display of some graphs, in particular the amplitude of the frequency response. >> Changes that do not impact results << 1. Fixed a problem when exiting the Tee/Wye property window it would appear to hang if there were fewer than three pipes. *** Changes for Version Date 2021.09.28 *** >> Changes to computation logic that could impact results << 1. Difference Exit forces now account for gauge pressure acting on the exit. Previously, the ambient pressure force was removed (which is correct), but only the momentum force was considered. For cases where the nozzle exits into a pressurized area (a downstream pipe, tank, etc.) this is not correct. The nozzle now contributes both a momentum force and pressure force. 2. Corrections made to transient results for mixtures inputted in mole percent. >> Changes to data management that could impact results << 1. Changing force definitions in Analysis Setup would not clear results. This has been fixed. 2. When attempting to use options to "Add" or "Remove" losses from a pipe with "Copy Data From..." or Global Edit, the incorrect losses could be applied. This has been corrected. 3. The warning for maximum temperature exceeding the estimate could have been generated erroneously with results from internal iteration (meaning the warning did not reflect the true maximum temperature encountered). This has been fixed. >> Changes that do not impact results << 1. Relief Valves now correctly report Cv/K in the associated graphs. Note that the Cv graph assumes an Xt of 0.6. 2. Default values in Analysis Setup will now be properly converted if US units are excluded from the model. *** Changes for Version Date 2021.10.14 *** >> Changes to computation logic that could impact results << a. None. >> Changes to data management that could impact results << a. None. >> Changes that do not impact results << a. None. *** Changes for Version Date 2021.11.16 *** >> Changes to computation logic that could impact results << a. Fixed issue where steady state temperature results were changing upon reloading a scenario for junctions with energy balance checked in their properties window. b. Updated steady state temperature results of outlet junctions so that their inlet temperatures match the outlet temperatures of the pipes flowing into them. >> Changes to data management that could impact results << a. None. >> Changes that do not impact results << a. None.