On Tuesday, 4 March 2025, 05:41:04 CET Harnish Patel via QGIS-User wrote: > I hope this message finds you well. I am currently working on an airflow > simulation project using Ansys Fluent, where I aim to simulate airflow > dynamics through an urban city area. To proceed with the simulation, I > require a 3D watertight geometry of the city to input into the simulation > software.
You can create a mesh from DEM data and buildings in QGIS, but the exported mesh will hardly be watertight. I suggest you export it to a 3D modeling software like blender. You can use the plugin "Qgis2threejs", it will export into glTF which you can import in blender: > https://plugins.qgis.org/plugins/Qgis2threejs/#plugin-details Also read the documentation: >https://minorua.github.io/Qgis2threejs/docs/ Then consult the blender documentation and community for making your mesh watertight. Unfortunately, my knowledge of Blender is constricted to modeling for 3D games and that was 15 years ago. Best regards Toby -- Tobias A Schula Forestry Expert geospat...@schula.org _______________________________________________ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
