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