=== AFT xStream Version 3 (2024.08.21) (Build 1111) === --- Changes that affect engineering conclusions --- 1. Fixed an issue where ASME Steam, Chempak, or REFPROP fluids would not appropriately use "High Accuracy" Gamma. This generally has negligible impact, but in some cases - especially near a fluid's critical point or at extreme supercritical conditions - results could be substantially affected, and/or the transient results could be unstable/unrealistic. 2. Fixed a problem displaying Standard or Normal unit types in the Heat Exchanger, Valve and Tank summary tables. These could be using an incorrect STP density if there are multiple fluids used. --- Other changes --- 1. Fixed an issue where splitting a ZLC pipe would cause an elevation of NaN to be calculated for the new junction. This could cause an overflow exception when manipulating workspace objects later on. 2. Fixed issue where "Other" Export Type in the Excel Export Manager displayed incorrect estimates for cells occupied. Fixed issue where "Library Sources" did not display the correct information. 3. Fixed an issue that caused Plot Formatting to load incorrectly for Multi-Scenario Graph List Items. 4. Added transient events for Tank Gas Mass and Tank Temperature. 5. Fixed an problem that would cause Annotation Text Alignment properties to not be retained when reloading Graph List Items. 6. Revised scaling in Fluid Library preview graphs. 7. Correct fluid list is now displayed when closing the edit fluids tab. 8. List headers now resize to fit the header even when there are no items in its column 9. Expanded the Pipe Material Library to include Specific Heat and Modulus of Elasticity. 10. Added bends as object type in xStream Import Workbook. 11. Added a check for valid geometries when importing fittings. User can no longer import fittings with geometries that are invalid for their respective category. 12. Fixed issue with focusing when user clicked into and out of filter text box in the Output Control form. === AFT xStream Version 3 (2024.06.10) (Build 1109) === --- Changes that affect results --- 1. Fixed an issue where, for some model configurations, a finite tank set to Calculate From Steady-state would cause convergence failure. 2. Fixed a problem where the maximum and minimum forces were not reset between runs. This would result in these values being used from one scenario to the next and could give erroneously high forces for a given scenario. --- Changes that affect interface --- 1. Limited the number of multi-scenario output to 250 scenarios to avoid file and display errors. 2. Improved visualization of Design Alerts when graphed in Profile plots. 3. Fixed an issue where pipes would not show in the Overview Map at close zoom levels. 4. Updated Printer Page Layout and Print Area Preview on the Workspace to have more clear behavior and options. 5. Added the capability to start a valve at 0% open when using the Characteristic data. 6. Fixed the time remaining estimate not being reasonable when starting from a checkpoint. 7. Fixed an issue that caused Undo to not operate correctly for Annotations. 8. Made it so that deleting a scenario will remove that scenario from saved Graph List Items. 9. Fixed an issue where resizing an annotation could sometimes cause a System.Collections.Generic.KeyNotFoundException. 10. Fixed an issue where changing the "Background Picture Scaling" value in User Options -> Workspace -> Other was not properly scaling the background image. --- Other changes --- 1. Fixed a problem where the Valve Source was being reset to User Specified when the model or scenario was loaded. === AFT xStream Version 3 (2024.03.12) (Build 1106) === --- Changes that affect results --- 1. Fixed an issue where User Library fluids would not report a warning if they dropped below their defined minimum temperature during a Run. --- Changes that affect interface --- 1. Limited the number of multi-scenario output to 250 scenarios to avoid file and display errors. 2. Added junction numbers to the Edit->Select Shortest Path menu labels for clarity. 3. Fixed an issue where valves using the Resistance Curve loss model were improperly checking transient data when accepting changes in the Valve Properties window. 4. Removed liquid-type units from the Volumetric Flow Rate unit family. 5. Fixed being unable to cancel Batch Runs. --- Other changes --- 1. Fixed an issue that caused just the first graph in stacked graph configurations to be saved to a file by using the File->Save Graph As... dialog. === AFT xStream Version 3 (2024.01.25) (Build 1104) === --- Changes that affect results --- 1. Fixed issue where control valves set to Fully Open - Never Control in stagnant regions were not transferring the pressure from one stagnant pipe to the other. 2. Fixed issue where some loss information was inadvertently cleared (set to zero) when loading an xStream 2 model. Affected losses were: (1) General Component K Factor, (2) Heat Exchanger K Factor, (3) Screen K Factor, (4) Venturi K Factor, (5) Venturi Cd. 3. Fixed issue where the Xt reported for a control valve with a Cv and Xt vs Open Percent table was always the full open Xt. 4. Fixed Transient Solver Initialization > Advanced Settings values being of unreasonable magnitude when unit system was set to Metric Only. 5. Fixed issue where an internal transient solver failure could cause another error that crashed the application. Now, these types of errors will fail to converge as expected and delete the output without additional failures. 6. Fixed issue that was preventing Local Iteration error messages from showing as Warning messages for Steady State runs. --- Changes that affect interface --- 1. Fixed issue where User Default font settings in Global Layer Settings were not being saved or loaded properly in languages where a comma is used as the decimal mark. 2. Added more robust error handling for file manipulation errors commonly encountered in Library Browser. 3. Fixed issue that caused recorded animations to not prompt for a save location. 4. Made error reporting improvements in Graph Results Multi-Scenario graphs. 5. Fixed issue with copy+pasting Annotations with lines shown not displaying properly in the Paste Preview or after pasting. 6. Added import of junction image sizes and pipe thickness to Workspace Layers Import. 7. Improved performance when a large number of objects are deleted from the workspace or bulk modified in Analysis Setup. 8. Fixed issue where valves using the "From Characteristic" Loss Source with Open Percentage transients would force the first transient data point to be 100% open. 9. Fixed issue that caused Layer Label Control Parameter Lists to load incorrectly while using certain language translation files. 10. Fixed issue with EPAnet export that caused models with Exit Relief Valves to fail the export. 11. Fixed issue that caused Select Working Fluid in the Startup Form to fail when a Chempak fluid was selected. 12. Fixed issue during a batch run where the results would not be saved to a text file when this option was selected. 13. The frame on the Pipe Properties window, Optional tab, for the number of parallel pipes was being hidden by other controls. Moved the frame so it can be seen. 14. Fixed a problem where the valve K factor or resistance curves would not be retained when the model/scenario was reloaded. 15. Profile Plot titles will now display the first and last pipe numbers of the selected path, rather than the lowest and highest overall pipe numbers. 16. Fixed a problem when morphing a Valve into a Relief Valve where the Loss Type would be in and unknown state. --- Other changes --- 1. Fixed a problem causing the Warning and Design Alerts to not be exported when using the Preformatted option. 2. Updates the descriptor for Stainless Steel Tubing, 1-3/4 from 14 BWG to 16 BWG to match wall thickness value. This would not change the engineering data but may cause some pipes to become undefined if models are using this. 3. Fixed an issue where changing Scenarios while the Recovery File or Auto-Save was running could cause corruption of some model/object data 4. Removed the prompt to convert older models and make a backup. This caused the output files to be renamed to .out.bak_X3 which caused the model to not report any valid output. === AFT xStream Version 3 (2023.10.31) (Build 1101) === --- Initial Release ---