IVRESS/CFD is a CFD post-processor, which allows visualization of large-scale steady-state and time-dependent CFD datasets.

IVRESS/CFD allows users to construct the visualization scenario using a user-friendly graphical-user interface.

IVRESS/CFD Global and Local visualization objects designed to allow easy change of the object parameters and reduce visual clutter.



  • Global Visualization Objects
    • Arrays of stream lines/ribbons/volumes that can be colored using any primitive or derived scalar response quantity and can be displayed as:
      • Lines
      • Animated arrows
      • Animated particles

    • Any surface in the flow field can be colored/contoured using any scalar response quantity. Useful surfaces to color include the surface of the model and cutting planes


    • Layers of semi-transparent colored/contoured surfaces

    • Iso-surfaces

    • Volume arrows. Displaying a few layers of arrows can help quickly identify the location of interesting flow features such as recirculation areas

    • Vortex cores displaying the axes of rotation and strength of the vortices

  • Boundary Layer Visualization
    • Boundary layer visualization objects including surface-restricted streamlines and separation/attachment lines


  • Local Visualization Objects / dynamic probes
    • Stream lines/ribbons/volumes


    • Stream lines/ribbons/volumes

    • Elevation surfaces

    • Surface arrows/volume arrows probes

    • Iso-surface probes

  • 2-D Graphing
    • Cross-section line probes in conjunction with 2D graphs

  • Visualization of the CFD grid
    • The user can display any grid zone
    • On and off switching of any i-j-k plane
    • Highlighting of the iBlank grid points
    • Other objects include a grid-aligned cutting planes


  • CFD Grid import
    • Structured I-J-K grids
    • Overlapping (Chimera) grids with I-blanking
    • Unstructured grid
  • Unsteady (time-dependent) CFD visualization
    • All visualization objects can be used for both steady and unsteady flow visualization. Typical unsteady flow visualization objects include:
      • Streak lines / pathlines
      • Animated instantaneous streamlines.
      • Animated Iso-surfaces
      • Animated arrows/color/contours for any surafce in the flow domain
      • Animated vortex cores and attachment and seperation lines
  • Object-Oriented scene-graph design
    • Multiple datasets can be visualized (up to available memory
  • Response Variables
    • Primitive response quantities as well as derived quantities can be used to display any flow visualization object
  • Point Search
    • A very efficient recursive tree search algorithm is used for real-time point and value search in the CFD grid
  • Geometry Import
    • VRML 2.0
    • Light wave
  • IVRESS Scripting Language

  • Display
    • Supports multi-screen virtual-reality facilities with tracking
    • Support the CAVE, Immersadesk, and Powerwall
    • Support single screen displays
  • Graphical-User Interface
    • Hierarchical graphical menu
  • Multimodal Interfaces
    • Natural-language speech interface. Natural-language voice commands can be used to interactively change any visualization parameter to quickly and easily uncover flow features
    • Speech synthesis
    • Head tracking
    • Tracked wand
  • Web-enabled
    • IVRESS/Player web browser plug-in for web-based CFD datasets visualization
  • Platforms
    • Windows 2000/XP PCs
    • SGI workstations