XFlow is a next generation CFD software system from Next Limit Technologies that uses a proprietary, particle-based, meshless approach which can easily handle traditionally complex problems.

The XFlow approach to CFD enables complex modeling and analysis in a straightforward way, minimizing the presence of algorithmic parameters and avoiding the traditionally time consuming meshing process.

For engineers and analysts who require quick and accurate feedback on flow, thermal, and acoustic behaviour, XFlow is a CFD software system that provides you with the ability to solve problems involving moving boundaries, free surface and fluid structure interaction on complex geometric domains.

Meshless approach

The meshless approach within XFlow is particle-based and fully Lagrangian which means classic fluid domain meshing is not required and surface complexity is not a limiting factor. XFlow can handle moving bodies and deformable parts, and is tolerant with the quality of the input geometry.

Particle-based kinetic solver

XFlow features a novel particle-based kinetic algorithm that:
• Resolves the Boltzmann and the compressible Navier-Stokes equations.
• Features state-of-the-art LES (Large Eddy Simulation) modelling, and advanced non-equilibrium wall models.
• Has been specifically designed to perform very fast with accessible hardware.
• Provides Large Eddy Simulation (LES) analysis in CPU-times similar to most codes providing just RANS analysis.

Single consistent wall model

XFlow uses a unified non-equilibrium wall function to model the boundary layer. This wall model works in all cases, meaning that it is not necessary to select between different algorithms and take care of different limitations related to each scheme.

Near-linear scalable performance

XFlow is fast and efficient, even on a standard desktop PC. High performance computers are not required. XFlow is fully parallelized for multi-core technology with near-linear scalability.

Advanced modeling capabilities

XFlow is capable of handling largue and complex models, and greatly simplifies the setup of analysis with:
• Moving parts
• Forced or constrained motion
• Contact modeling

Advanced analysis capabilities

XFlow's solver also features:
• Thermal analysis
• Conjugated heat transfer
• Flow through porous media
• Non-Newtonian flows
• Complex boundary conditions including the porous jump and fan models.

Adaptive wake refinement

XFlow's engine automatically adapts the resolved scales to the user's requirements, refining the quality of the solution near the walls and dynamically adapting to the wake while the flow develops.