What AI says about Gerris

Gerris Flow Solver is a free, open-source CFD tool for generic numerical simulations of fluid flows in geometrically complex domains, with adaptive mesh refinement and support for multiphase and interfacial flows. It is implemented in C and licensed under GPLv2, with builds for Linux, BSD, and macOS. The project is hosted on SourceForge, providing downloads, documentation, wiki, mailing lists, and community discussions.