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About Goma — Capabilities and Features

About Goma

For a more comprehensive introduction look at the Goma Capabilities document (PDF)

Features and Highlights

Material Models - Fluids

  • Generalized Newtonian (concentration, temperature and shear-rate dependence). Carreau, Carreau-WLF, Molten glass, epoxy, epoxy cure, bingham-plastic

    Industry applications: Extrusion, polymer processing, coating

  • Supension balance models (Phillips model for particle concentration, Krieger for viscosity)

    Industry applications: Multiphase manufacturing flows

  • Single or multimode viscoelastic with EVSS split stress approach

    Industry applications: Extrusion, polymer processing, coating

Thermo-physical property and phase change models

  • Vapor/liquid equilibrium - Ideal and Flory Huggins

  • Discontinous variables approach for interphase mass-momentum transport (Schunk and Rao, IJNMF 1994)

  • Vapor-pressur VS (T, C, K) models, Viz. Kelvin equation, Riedel, Antoine, etc.

  • Liquid and solid equilibrium - Scheil or solute dependent solidification (latent heat release with enthalpy or intefacial Stephan condition).

  • Liquid/Solid macrosegregation with Flemings-Mehrabian model

  • Polymer thermoset and condensation curing

Capabilities

Goma's capability is based on customer need

  1. Mechanics — Includes all major branches of mechanics and more. Conjugate capability.

  2. Material models and constitutive equations — Includes generalized Newtonian and VE for fluids, elastic and elastoviscoplastic for solids, Fickian, multicomponent, and non-Fickian fluxes, and more

  3. Free surface and free boundary tracking — Solidification surfaces, capillary free surfaces, consolidation fronts, mold filling fronts, saturation fronts, user prescribed kinematics and geometry, ablation fronts, and more

  4. Multidimensional with 2.5D capability. Full shell capability.

  5. Platform generality — High-end, high-performance, and commodity hardware

  6. User prescribed and user defined capability

  7. Fluid-structural interactions — Computational Lagrangian solids and ale in both solids and fluids with Eulerian-Eulerian methods an active research area

  8. Saturated and unsaturated, deformable, porous media — Poro-elastic and poro-plastic

  9. Full-Newton coupled algorithms and automated continuation, augmenting conditions, stability analysis — All in a production setting

  10. Other advanced features — Shell reduced order models, solid-model-based geometry support; advanced post processing features

  11. Pixel and Voxel-to-mesh capability