flow5, the open-source aerodynamic analysis tool for aircraft and hydrofoils, has released version 7.54 on January 1st, 2026. This update integrates the Gmsh SDK for advanced meshing, refactors core code into reusable libraries, and enhances modeling capabilities.
Key highlights include:
– Meshing now supports Gmsh alongside the custom mesher, with new fuse mesh options conforming to wing mid-camber lines.
– Removed panel connections at flap edges and fuselage-wing junctions for refined pitching moment accuracy.
– Dropped legacy IGES import/export due to library changes; inertia evaluations upgraded to OCC.
Analysis improvements fix velocity issues in LLT, add hinge-forced transitions in 2D/3D calcs, and streamline AVL exports. Post-processing and UI receive minor fixes, with deep code cleaning throughout.
Earlier v7.53 goes fully FOSS, updates OpenGL to 4.6, optimizes foil routines, and re-enables XFoil. Project file format changes break backward compatibility—note for users.
Recent releases like v7.52-v7.50 focus on drag corrections, stability derivatives, AVL controls, and viscous drag on-the-fly (FOSS-activated). Explore the full changelog for Gmsh integration, VPW enhancements, and years of refinements.
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