Ansys 2025 R1 Updates for Oil and Gas | Article

This article highlights Ansys 2025 R1 updates relevant to oil and gas workflows, including VOF on GPU, combustion modeling, radiation, and discrete phase enhancements.

Ansys 2025 R1 Updates for Oil and Gas

Volume of Fluid Method (Beta for GPU solver)

Support for sliding meshes, laminar flow and RANS models

Limitations of initial beta release:

  • Only isothermal calculations (energy equation must be disabled)

  • Not compatible with other models like – Species transport, DPM, LES

  • Only implicit VOF with Compressive scheme

Flamelet Generated Manifold (FGM)

Release of adiabatic FGM

  • Assumes adiabatic flame temperature

  • Pre-tabulated detailed chemistry

  • Four transport variables: Mixture fraction [f], Variance of mixture fraction [f”], Progress Variable [C], Variance of progress variable [ C”]

  • Pre-tabulated detailed chemistry

Surface-to-Surface Radiation Model

S2S model now supported with GPU

Simplified workflow on GPU compared to CPU

  • No need to calculate the view factors explicitly – enable the radiation model, define the emissivity on the various surfaces, initialize and calculate the solution

Clustering enhancements

  • Split-angle option in TUI to avoid defeaturing
    /solve/models/radiation/s2s-parameters/split-angle

Support for Periodic BC together with radiation

  • Conformal and Non-conformal

 

Discrete Phase Model: Two-way Coupling for Mass Transfer

  • Sources for detailed species transport equations

  • Mass transfer from particles to coupled gas phase supports single-component evaporating / boiling particles