Flow5 Released to Open Source

Summary

Release Notes flow5 v7.54, January 1st, 2026 General linked flow5 to the Gmsh SDK refactored the code to isolate modeler and solver classes into a library Modelling/Meshing all meshing interfaces modified to use the Gmsh library in addition to the built-in custom mesher added an option to build fuse meshes conforming to the wings mid-camber line removed panel connections at the edges of flaps; slight impact on pitching moment removed panel connections between fuselage anbd wings; slight impact on pitching moment removed IGES import and export options due to changes of symbol names in the OCC library changed the evaluation of inertia properties in the case of an xfl-type fuselage to use OCC instead of the built-in custom evaluator; slight impact on evaluations minor improvements to the export of wings to AVL Analysis fixed issues with the velocity parameter in LLT calculations removed the option to tilt the wings from AVL controls in linear polars; controls will need to be rebuilt added an option to force transitions at hinge location in 2d batch and 3d OTF calculations Post-processing fixed minor issues in the 3d display of LLT results UI bunch of minor improvements and bug fixes Other removed number format localization in the fl5-lib module deep code cleaning flow5 v7.53, January 1st, 2026 General flow5 is FOSS the format of the .fl5 project file has been modified; NEWLY SAVED FILES WILL NOT BE READABLE BY VERSIONS OLDER THAN v7.53 set the default OpenGL context to 4.6 instead of 3.3 Modelling/Meshing optimized the foil modification routines for faster UI response fixed issues with the CAD and STL type sail editors fixed the "save as" exit option in the plane editor Analysis Post-processing UI fixed more minor compatibility issues with Wayland Other flow5 v7.52, September 22, 2025 General Modelling/Meshing fixed AVL-type ctrl issues in T12358 polars Analysis corrected the storage of the local induced drag and induced angle in 3d operating points; was storing and di...