FluxCore solver technology

FluxCore is Gradient Dynamics’ GPU-native CFD and multiphysics technology. It is developed as a new accelerator-first solver, not as a port, wrapper or GPU rewrite of a legacy SIMPLE or PIMPLE codebase.

The public product contract focuses on supported physics, meshes, boundary conditions, outputs, convergence evidence and validation. Implementation-level solver architecture and internal tuning mechanisms are intentionally not published.

Production capability

FluxCore supports production three-dimensional workflows on polyhedral meshes, including viscous and turbulent flow, steady and time-resolved simulation, rotating zones, engineering forces and moments, thermal transport and multi-region conjugate heat transfer. It is more than a basic explicit 2D solver or a research demonstration.

What GPU native means

GPU native means the complete simulation path is designed around accelerator execution: large-mesh preparation, distributed case execution, boundary and zone handling, convergence monitoring, physics coupling and result production. Studio manages that path as one service rather than asking users to assemble a solver, cluster scheduler and file pipeline.

FluxCore includes a sophisticated GPU-native linear-system subsystem for the large sparse equation systems generated by momentum, turbulence, energy and multi-region coupling. That subsystem is part of FluxCore’s coordinated nonlinear CFD workflow; FluxCore is not merely a standalone linear solver.

What users control

  • the geometry, mesh and material regions,

  • steady or time-resolved physics,

  • turbulence and thermal models,

  • operating conditions and boundary types,

  • rotating regions and wall motion,

  • accuracy and convergence targets,

  • forces, moments, thermal quantities and field-output cadence.

What Studio manages

Studio validates the request, prepares supported mesh data, allocates GPU capacity, applies production numerical defaults, streams job progress and finalises portable output files. This keeps implementation-specific controls out of the normal workflow while retaining the engineering controls required for validation.

For a fuller product description, see FluxCore.