WindFlow 0.2.3

Fixes

• No more sudden close on some SketchUp files. A few broken shapes in a model (flat slivers with repeated points) made the 3D file reader crash the whole app with no message. Those shapes are now skipped and the model opens.
• SketchUp's person figure no longer breaks the import. Small objects left far from the building (like the default person standing at the origin) are removed, with a note saying what was removed, so the simulation grid fits the building.
• Windows are found next to solid blocks. A closed solid block beside the house (for example paving accidentally extruded upward) used to stop WindFlow searching for windows at all. Solid walls and blocks no longer count against the window search.

Download

• WindFlow-win-Setup.exe: install (no admin rights needed). Installed copies update to this version by themselves.
• WindFlow-win-Portable.zip: unzip and run, nothing installed (no automatic updates).

Windows may say "Windows protected your PC" because the installer is not signed yet: click More info → Run anyway.

The other files (releases.win.json, RELEASES, assets.win.json, .nupkg) are the update feed; you don't need to download them.

WindFlow 0.2.2

What's new

• Rotated buildings import properly. A model drawn at an angle on its site is turned so its walls line up with the simulation grid, so windows on those walls are found. North is adjusted with it, so wind directions stay true.
• Unnamed windows and doors are recognised by their shape. A frame or door that sits in a hole in a wall is found even when it is called something like "Group_17". Cars, furniture and wall pieces are left alone.
• Window and door names in more languages. Fenster, Tür, fenêtre, porte, ventana, puerta, finestra, janela, raam, fönster, okno and more.
• Modelling gaps are labelled. Long thin slots (a missing strip under the roof, a slit at the base) are listed as "Gap" with a note saying where they are, so they are easy to find and fix in your model.

Download

• WindFlow-win-Setup.exe: install (no admin rights needed). Copies of 0.2.1 update to this version by themselves.
• WindFlow-win-Portable.zip: unzip and run, nothing installed (no automatic updates).

Windows may say "Windows protected your PC" because the installer is not signed yet: click More info → Run anyway.

The other files (releases.win.json, RELEASES, assets.win.json, .nupkg) are the update feed; you don't need to download them.

WindFlow 0.2.1

What's new

• Automatic updates. WindFlow now checks GitHub for new versions when it opens and updates in one click ("Update and restart"). Help → Check for updates does it on demand; Settings → "Check for updates automatically" turns it off. Only GitHub is contacted; nothing about you or your models is sent.
• Much better SketchUp import. The unit is read from the file, window and door components are turned into openings automatically (new import option, on by default), and the opening detector finds windows on single-surface walls and gabled roofs far more reliably.
• Clear warning for leaky models. If most of a room's air leaks through gaps that are not windows or doors, the room is marked unreliable and WindFlow tells you what to fix.

Download

• WindFlow-win-Setup.exe: install (no admin rights needed). From this version on, updates arrive automatically.
• WindFlow-win-Portable.zip: unzip and run, nothing installed (no automatic updates).

If you have 0.2.0 installed, install this one once by hand; after that, updates are automatic.

Windows may say "Windows protected your PC" because the installer is not signed yet: click More info → Run anyway.

The other files (releases.win.json, RELEASES, assets.win.json, .nupkg) are the update feed; you don't need to download them.

WindFlow 0.2.0

The first public release of WindFlow: a free Windows app that shows how wind moves fresh air through each room of a building.

Download

• WindFlow-win-Setup.exe: double-click to install. No admin rights needed; it adds a Start menu and desktop shortcut.
• WindFlow-win-Portable.zip: unzip anywhere and run WindFlow.exe. Nothing is installed.

Windows may show "Windows protected your PC" because the installer is not code-signed yet. Click More info, then Run anyway.

Needs

• Windows 10 or 11, 64-bit.
• An NVIDIA graphics card for full speed. Without one, the simulation falls back to the processor and is much slower.

What's in it

• Open a Revit export or an OBJ, glTF, FBX, STL, 3DS, DAE or PLY model, or try the sample house.
• Set the wind and watch the air move through the building live.
• Fresh-air and total air change rate for every room, with Standard, High and Ultra accuracy.
• Open and close windows and doors and see the change straight away.
• Devices (fans, air conditioners, exhausts, hoods) and Studies (compare two versions, find the best windows to open, a whole year from a weather file).
• A PDF report, and a short guided tour on first launch.

WindFlow is a design-stage tool. Its results are estimates with stated uncertainty, not a substitute for a ventilation engineer or a code-compliance calculation.