=== AFT Arrow Version 10 (2024.11.20) (Build 1114) === --- Changes that may affect engineering conclusions --- 1. For very low flows or pressure drops, the Cv/xT calculation could have a large relative error. Added the ability to tighten the tolerance for Cv/xT calculations to Advanced Parameters to account for this rare occurrence. 2. Fixed a problem with Inline Exit type Relief Valves where in some cases the model will not converge the first time it is run, but will the second time. 3. Fixed a problem when using Kv with Exit-type Relief Valve when using the optional Valve ID. 4. Fixed a warning message regarding normal or standard flow units showing for compressors in sizing or controlled flow modes set to a non-normal or non-standard volumetric unit. --- Important non-engineering changes --- 1. Fixed error when using "Load All User Defaults" in User Options. 2. Fixed an issue where User Library Fluid tabulated enthalpy and density values were not being saved properly and would reset to 0 upon re-opening the Library Manager. 3. Relief Valves mistakenly did not require a Blowdown pressure or Overpressure (when applicable). These are now required. 4. Fixed an issue with automatic conversions when selecting units for valve equivalent lengths. 5. Fixed issues with printing large models. 6. Fixed a problem where a user-created fluid without vapor pressure would repeatedly ask to be updated. 7. Added the capability to resize the background image in individual scenarios. 8. Fixed an issue where hitting the Escape key after drawing a pipe in multi-pipe drawing mode over a rectangular Annotation would cause that Annotation to be removed. 9. Added message on the Pipe Heat Transfer tab indicating that heat transfer is not available when XTS is active. 10. Fixed a problem where the background image would not propagate to child scenarios. 11. Fixed a problem where xT was not highlighted as required on the Relief Valve Property window. 12. Fixed issue with unexpected errors when using workspace search bar. 13. Fixed an issue where copy-pasting multiple Annotations could include previous Workspace locations in the Paste Preview incorrectly. 14. Fixed issue where closed graph icons would display incorrect colors in graph list. 15. Revised scaling in Fluid Library preview graphs. 16. Fixed issue in Arrow where compressor curve form would load displaying "Head" instead of "Polytropic Head" in its data grid. 17. Fixed issue where graph formatting flyout would close when resizing the application. --- Miscellaneous changes --- 1. Fixed a problem with unbalanced Relief Valves where a warning message was given if a zero differential pressure was entered. 2. Model files which had been saved with at least one annotation, in which at least one of those annotations that had been previously saved was later deleted, after which the model was saved again, and model reopened would cause an error for each of the deleted annotations while reading the model file. 3. Fixed an issue that caused the 'Show Full Scenario Path' checkbox in Graph Results legend formatting not to take effect when the graph had not yet been added as a Graph List Item. 4. Updated text in license expiration message. 5. Fixed a graph scaling issue with Not a Number results (such as infinite K factor for zero loss). 6. Fixed issue where Library Manager form would collapse upon closing the Edit Cost Library form. 7. Changed name of frame in User Options > General > Visual Options to "Quick Access Panel" instead of "Scenario Panel". === AFT Arrow Version 10 (2024.07.24) (1112) === --- Changes that affect results --- 1. 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. 2. Fixed a problem with the compressor vs system graphs where the density that was being used to convert from mass to volumetric flow was always based on the last pipe. 3. Fixed a problem with pumps using interpolated data and standard or normal units where the conversion was not done correctly. Also fixed a problem with the Pump Summary reporting if there were more than one fluid or mixture in the scenario. Finally, added the new capability to display standard or normal units in the Pump Summary for multi-scenario output. --- Changes that affect interface --- 1. XTS: Changed logic to only require a transient temperature if the Assign Flows junctions have inflow. 2. Fixed a problem where a valve using characteristic data could get into a state where it does not have any xT data in the data table but yet was still defined and allowed the model to run. This would cause a computational error. Now the valve will be marked as undefined in this case. 3. 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. 4. Removed AOR and POR since they are not part of a compressor or fan. 5. Made it so that deleting a scenario will remove that scenario from saved Graph List Items. 6. Fixed an issue where resizing an annotation could sometimes cause a System.Collections.Generic.KeyNotFoundException. 7. Fixed an issue that caused Plot Formatting to load incorrectly for Multi-Scenario Graph List Items. 8. Fixed an problem that would cause Annotation Text Alignment properties to not be retained when reloading Graph List Items. 9. Fixed an issue where changing the "Background Picture Scaling" value in User Options -> Workspace -> Other was not properly scaling the background image. 10. Expanded the Pipe Material Library to include Specific Heat and Modulus of Elasticity. 11. Fixed alignment issues on Curve Fit form. --- Other changes --- None. === AFT Arrow Version 10 (2024.04.18) (1110) === --- 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. --- 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 junction numbers to the Edit->Select Shortest Path menu labels for clarity. 6. Added the capability to start a valve at 0% open when using the Characteristic data. 7. Fixed issue where auto arranged tees failed arrangement for Miller flow combining or Miller flow splitting tees. 8. Fixed an issue that caused Undo to not operate correctly for Annotations. --- Other changes --- None. === AFT Arrow Version 10 (2024.02.28) (1108) === --- Changes that affect results --- 1. Fixed several problems when using Standard or Normal mass flow rate units with multiple fluids in the model. Some of the Output and Graph results were shown using the wrong density. 2. Fixed a problem with creating Design Alerts when a model is newly opened with output. Warning for temperature and pressure being out of range were erroneously created. If the model was rerun, these warning would no long appear. 3. 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. 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. 3. Fixed a problem during a batch run where the results would not be saved to a text file when this option was selected. 4. Improved performance when a large number of objects are deleted from the workspace or bulk modified in Analysis Setup. 5. Fixed an Excel Import Worksheet typo that caused Assigned Pressure Temperature (inlet) import to fail. --- Other changes --- 1. Fixed an issue where changing Scenarios while the Recovery File or Auto-Save was running could cause corruption of some model/object data. 2. 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. 3. Fixed a problem causing the Warning and Design Alerts to not be exported when using the Preformatted option. 4. Update the descriptor for Stainless Steel Tubing, 1-3/4 from 14 BWG to 16 BWG to match the wall thickness value. This would not change the engineering data but may cause some pipes to become undefined if models are using this. === AFT Arrow Version 10 (2023.12.11) (1105) === --- Changes that affect results --- 1. Fixed an issue in XTS where the system could dynamically enter a state isolating regions from a reference pressure, but continue solving. This state cannot be solved for, and the steady-state solver is halted from proceeding when this is encountered. This check was added to the transient solver - the run will now halt mid-transient if this occurs. 2 Fixed an issue where the Xt reported for a control valve with a Cv and Xt vs Open Percent table was always the full open Xt. 3. GSC: Fixed some problems which caused the Valve Open Percent to not work properly. It would not find a solution because it would not change the Variable value correctly. 4. Added import of junction image sizes and pipe thickness to Workspace Layers Import. 5. GSC: When Pipe Scaling was used as a variable, it would be reported in the GSC Variable tab in the output as 100x the actual value. This did not affect the results other than the display. 6. Fixed a problem displaying the Rayleigh number when reopening a model. --- Changes that affect interface --- 1. Fixed an 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 an 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 an issue that caused Layer Label Control Parameter Lists to load incorrectly while using certain language translation files. 6. Fixed an issue with EPAnet export that caused models with Exit Relief Valves to fail the export. 7. Fixed an issue that caused Select Working Fluid in the Startup Form to fail when a Chempak fluid was selected. 8. Fixed an Excel Import Worksheet typo that caused Assigned Pressure Temperature (inlet) import to fail. 9. Models with Cv-variable or Kv-variable were allowed to run without an xT value. This value is now required. --- Other changes --- None. === AFT Arrow Version 10 (2023.10.20) (1103) === --- Changes that affect results --- 1. Making changes to Design Alerts no longer requires clearing Output to see those changes in results --- Changes that affect interface --- 1. Fixed an issue when creating a color map layer that would throw a NullReferenceException 2. Fixed an issue with annotations using the "Line Show" property not being saved properly when hidden on the Workspace --- Other changes --- None. === AFT Arrow Version 10 (2023.10.02) (1100) === --- Initial Release ---