Use the most efficient solver for your application

Nextflow Software provides the most efficient solvers for addressing your simulation objectives and application domains. Our industrial-grade solvers are developed by a business-oriented team of CFD experts and implement leading-edge scientific methods and software technologies. They are continuously being optimized and validated through numerous academic and industrial use cases.


SPH-flow uses the Smoothed Particles Hydrodynamics (SPH) method that shed a new light on computational fluid dynamics. The Navier-Stokes equations are discretized as a set of particles moving along with the fluid. Resulting from years of extensive research, SPH-flow offers new abilities in simulating complex problems out of reach with traditional methods.

SPH-flow software is the property of Nextflow Software and Ecole Centrale Nantes, co-developed with the support of CNR-INM​.

Grid-flow (ex-WCCH)

Grid-flow  aims at democratizing the use of CFD for designers. Based on a Cartesian mesh, its fully-Adaptive Refinement Method (ARM) relieves the need for manual meshing process. Thanks to innovative algorithms and extremely accurate schemes, complex geometries are easily handled to perform high-fidelity simulations.


ISIS-CFD uses unsteady, incompressible Reynolds-Averaged Navier-Stokes equations (RANS). It implements the finite volume method to build a spatial discretization of the transport equations. The face-based method is generalized to two-dimensional, rotationally-symmetric, or three-dimensional unstructured meshes for which non-overlapping control volumes are bounded by an arbitrary number of constitutive faces.


REVA is designed to solve the problem of ship resistance in calm water. It performs computations on monohulls, catamarans and trimarans taking into consideration lifting surfaces. It allows to model the influence of the floor and walls of towing tanks and air cushion effects on the free surface.


OPTNAV is a multipurpose optimization tool for hull design. It combines different solvers such as Hydrostatics, Holtrop Resistance, Intact Stability Check, with a powerful modelling and deformation engine. These different features are orchestrated to generate precise design of experiments (DOEs) with automatic mesh generation of modified hulls, and pre-evaluation of hulls performances.