FINE™/Hexa

FINE/Hexa is a CFD flow integrated environment dedicated to complex internal and external flows. Its approach, based on full automatic high quality unstructured hexahedral grids (Hexpress) coupled to a highly efficient preconditioned compressible solver with extremely fast agglomerated multigrid acceleration and adaptation techniques, is totally unique among the other CFD commercial codes.

  1. Unique meshing speed. HEXPRESS is the most advanced and powerful unstructured grid generator for complex geometries. It allows full automatic full hexahedral high quality meshing in hours instead of weeks.
  2. Full compatibility with AutoGrid automatic block structured meshes for complex geometries including rotating machineries.
  3. Fully hexahedral unstructured technology for higher accuracy, robustness and reliability.
  4. Single solver with extended fluid capability, from incompressible, low speed compressible to hypersonic flow regime.
  5. Very fast convergence acceleration through unique multigrid technology based on agglomerated cells.
  6. Powerful solution based adaptation, with iterative grid coarsening and refinement based on physical sensors.
  7. Very fast and powerful thermal engine for large scale conjugate heat transfer prediction.
  8. Easy-to-use, integrated and wizard based interfaces that guides users through meshing process, flow set-up, boundary conditions, running and flow monitoring with constant geometry display.
  9. Automated and integrated post-processing, CFView.


Key features:

  1. Fluid-to-fluid or solid-to-fluid full non-matching interface for full meshing flexibility;
  2. Turbomachinery rotor-stator interaction;
  3. Liquids, perfect and real gases;
  4. All flow regimes from incompressible, compressible, subsonic, transonic to supersonic;
  5. Wide variety of turbulence and physical models, including S-A, k-e, k-omega and SST models;
  6. Thermal engine for large scale conjugate heat transfer;
  7. Simulation using mesh deformation;
  8. Powerful parallel computing performance based on MPI, including automated domainde composition and load balancing.

Application

FINETM/Hexa covers a large range of applications such as complete aircrafts with engines, pylon, wings and flaps, cooled turbine blade and disk, automotive aerodynamics, rotating machinery multistage flows (NEW), environmental flow and more.

HEXPRESS

HEXPRESS™ is a unique and breakthrough fully automatic grid generator for complex geometries. HEXPRESS™ uses full hexahedral unstructured technology. It is a revolutionary tool allowing considerable time and cost saving in the grid generation of your fluid dynamics and structural mechanics simulation related task.

Keys features:

  1. Direct CAD import capability.
  2. CAD manipulation and advanced domain preparation and decomposition tools.
  3. Volume-to-surface approach, suppressing the need for a surface mesh.
  4. Mesh wizard for rapid solution set-up and easy back and forth operation.
  5. Buffer cell and boundary layer insertion for high quality cells in boundary layer regions.
  6. Automatic refinement procedures based on user defined sensors either next to solid walls or at specified area of the domain.
  7. Multi domain capabilities allowing the treatment of CHT and multi-part geometry models.
  8. Full non-matching multi-block connection allowing to multi row turbomachinery meshing.
  9. Powerful grid optimization algorithm.
  10. Batch mode.
  11. Mesh generation dynamic control through script.
  12. Transparent import of AutoGrid V5 mesh and IGGTM structured mesh.

New features of HEXPRESS

  • Adaptation step
  • Improved mirror plane treatment
  • Optimization step
  • Viscous Layer insertion step

Import and Export capabilities

  • Import capabilities
  • Ability to import ANSYS meshes
  • Ability to import multi-domain AutogridTM meshes
  • Colored STL
  • Export capabilities
  • Added capabilities at export to FLUENT file format (*.grd)
  • Ability to export groups of boundary conditions
  • Introduction of *.vmap file mapping FLUENT and HexpressTM vertices for use with FINETM/Marine
  • CGNS format

HEXSTREAM

General Functionalities of HEXSTREAM flow solver

  • All-hexahedra and unstructured solver
  • Object-oriented platform (C++)
  • Geometrical configurations:
  • 2D, 3D, 2D axisymmetric through FNMB
  • Multiple periodicity per block through FNMB
  • Inviscid, Laminar and Turbulent flows
  • Large panel of boundary conditions
  • Steady and Unsteady flows
  • Compressible/Incompressible fluids
  • Subsonic, Transonic, Supersonic compressible flows and Liquid flows
  • Very efficient Agglomeration Multigrid
  • Direct adaptation, only for single block [no FNMB] project in serial mode
  • MPI parallel code (automatic k-way partitioning, METIS)

Turbulence in HexstreamTM

RANS approach

  • One-equation model (S-A) from Spalart and Allmaras (1992)
  • Curvature correction term of Spalart and Shur (2000) to the S-A model
  • Linear low-Reynolds k-e model of Yang-Shih (1993)
  • Extended wall functions k-e model, Hakimi and Hirsch (2000)
  • Shear stress transport model (M-SST), Menter (1994)
  • Large Eddy Simulation (standard Smagorinski model)
  • Detached Eddy simulation (DES)

Dedicated Functionalities of HexstreamTM

  • External and internal flows
  • Conjugate Heat Transfer
  • Porous Media

  • Volumic Heat Source term
  • ANSYS Output
  • Turbomachinery applications

  • Key features of Hexstream

  • Preconditioned density-based code, a clear way to solve flows at all speeds
  • Explicit multigrid flow solver (well-proven technology inspired from FINETM/Turbo)
  • Parallel version already available
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