Phynexis

Overview

Phynexis is a particle and multiphase simulation platform: a discrete element engine coupled to OpenFOAM for fluid–particle flows, scaling from a laptop to a cluster. Ready-to-use builds are on our download server; running the solver requires a Phynexis license issued through Xiaohe Accounts.

Capabilities

• NetDEM engineDiscrete element simulation with spheres, triangles, level sets and learned shape fields — the particle-scale core of the platform.
• Fluid–particle couplingCFD-DEM coupling with OpenFOAM for resolved and unresolved flows — sediment, fluidization, conveying and three-phase problems.
• Parallel & scalableOpenMP and MPI scaling from a laptop to a cluster, with a native pack that bundles the OpenFOAM runtime.
• ML-accelerated contactNeural contact models (NetSDF, NetSPF, ANN) powered by PyTorch when a CUDA GPU is available.
• Python interfaceThe netdem Python module for scripting simulations, with a full technical reference on the project site.
• Starter & Pro licensesDownloads are public; running the solver needs an activated Starter or Pro license issued through Xiaohe Accounts.

Why Phynexis

• Born in researchPhynexis grew out of our particle and multiphase mechanics work — a discrete element engine with CFD-DEM coupling, shaped by years of simulating granular and three-phase systems.
• For engineeringWe package the runtime so you are not left wiring OpenFOAM and MPI yourself: a native pack with a one-line installer, a CLI for run and job control, and a scriptable Python surface.
• A platform, not a scriptThe same engine drives teaching, research and production workflows. Companion tools like the OpenFOAM distribution are open source; the Phynexis solver is licensed.

Download & activate

Install with a one-line script from our download server (public, no account needed to download). Then activate with a license key from Xiaohe Accounts to run the solver.