Gerris Flow Solver – solution of the partial differential equations describing fluid flow

Gerris is a tool for generic numerical simulations of flows (CFD), in geometrically complex geometries and including adaptive, multiphase and interfacial flows capabilities.

It can deal with arbitrarily complex solid boundaries in an automatic manner and uses dynamic adaptive mesh refinement to optimize the discretisation according to the flow solution.

Gerris uses an “embedded boundary” technique. Grid generation reduces to the computation of the “shape” (surface and volume fractions) of Cartesian (cubic) cells cut by the solid boundaries.

The software is supported by NIWA (National Institute of Water and Atmospheric research) and by the and Institut Jean le Rond d’Alembert.

Features include:

  • Solves the time-dependent incompressible variable-density Euler, Stokes or Navier-Stokes equations.
  • Adaptive mesh refinement: the resolution is adapted dynamically to the features of the flow.
  • Entirely automatic mesh generation in complex geometries.
  • Quadtree-based (Octree in 3D) spatial discretisation with automatic (and possibly dynamic) local refinement.
  • Unlimited number of advected/diffused passive tracers.
  • Multigrid Poisson solver.
  • Second-order Godunov type advection scheme.
  • Solves the time-dependent incompressible Euler equations.
  • Solves the shallow-water (Saint-Venant) equations.
  • Support for complex solid boundaries (automatic locally-refined mesh generation).
  • Flexible object-oriented specification of boundary conditions.
  • Portable parallel support using the MPI library.
  • Flexible specification of additional source terms.
  • Accurate surface tension model.
  • Multiphase electrohydrodynamics.

Support: Examples
Developer: Stéphane Popinet, Marcelo E. Magallon
License: GNU General Public License v2.0


Gerris is written in C. Learn C with our recommended free books and free tutorials.

Return to Scientific | Return to Physics Tools

Popular series
Free and Open Source SoftwareThe largest compilation of the best free and open source software in the universe. Each article is supplied with a legendary ratings chart helping you to make informed decisions.
ReviewsHundreds of in-depth reviews offering our unbiased and expert opinion on software. We offer helpful and impartial information.
Alternatives to Proprietary SoftwareReplace proprietary software with open source alternatives: Google, Microsoft, Apple, Adobe, IBM, Autodesk, Oracle, Atlassian, Corel, Cisco, Intuit, and SAS.
GamesAwesome Free Linux Games Tools showcases a series of tools that making gaming on Linux a more pleasurable experience. This is a new series.
Artificial intelligence iconMachine Learning explores practical applications of machine learning and deep learning from a Linux perspective. We've written reviews of more than 40 self-hosted apps. All are free and open source.
Guide to LinuxNew to Linux? Read our Linux for Starters series. We start right at the basics and teach you everything you need to know to get started with Linux.
Alternatives to popular CLI tools showcases essential tools that are modern replacements for core Linux utilities.
System ToolsEssential Linux system tools focuses on small, indispensable utilities, useful for system administrators as well as regular users.
ProductivityLinux utilities to maximise your productivity. Small, indispensable tools, useful for anyone running a Linux machine.
AudioSurveys popular streaming services from a Linux perspective: Amazon Music Unlimited, Myuzi, Spotify, Deezer, Tidal.
Saving Money with LinuxSaving Money with Linux looks at how you can reduce your energy bills running Linux.
Home ComputersHome computers became commonplace in the 1980s. Emulate home computers including the Commodore 64, Amiga, Atari ST, ZX81, Amstrad CPC, and ZX Spectrum.
Now and ThenNow and Then examines how promising open source software fared over the years. It can be a bumpy ride.
Linux at HomeLinux at Home looks at a range of home activities where Linux can play its part, making the most of our time at home, keeping active and engaged.
Linux CandyLinux Candy reveals the lighter side of Linux. Have some fun and escape from the daily drudgery.
DockerGetting Started with Docker helps you master Docker, a set of platform as a service products that delivers software in packages called containers.
Android AppsBest Free Android Apps. We showcase free Android apps that are definitely worth downloading. There's a strict eligibility criteria for inclusion in this series.
Programming BooksThese best free books accelerate your learning of every programming language. Learn a new language today!
Programming TutorialsThese free tutorials offer the perfect tonic to our free programming books series.
Linux Around The WorldLinux Around The World showcases usergroups that are relevant to Linux enthusiasts. Great ways to meet up with fellow enthusiasts.
Stars and StripesStars and Stripes is an occasional series looking at the impact of Linux in the USA.
Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Inline Feedbacks
View all comments