PPolySim OS

Fluid · Rail & Transit

Explicit Turbulence Modeling (RANS/LES) for Rail & Transit

Apply the explicit turbulence modeling (rans/les) to real rail & transit problems — in the browser, with AI assistance.

This is the explicit variant of the Turbulence Modeling (RANS/LES). RANS averages the flow and models turbulence, while LES resolves large eddies and models the small ones — trading cost for fidelity.

In rail & transit, teams face challenges like aerodynamics, track loading, braking thermal. The explicit turbulence modeling (rans/les) directly supports use cases such as train aerodynamics, rail structural fea, brake thermal analysis, and PolySim's AI Copilot can recommend settings and catch common setup errors before you run.

Typical Rail & Transit use cases

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