General Functionality

  • Backward compatibility
    • Version 4.0a is backward compatible with version 3.5a
      • This was limited in version 4.0
  • Unit systems
    • Several unit systems are available in version 4.0a
      • Settings available in the root node
      • In version 4.0, all units were converted to SI units
  • Web-based Model Library update
    • Available from the Options menu
  • Ability to move nodes up and down the tree in the Physics, Mesh, and Study branches
  • Create and paste selections from, for example, text files and PDF-files
  • Improved keyboard shortcuts for renaming, moving, and deleting nodes

Geometry

  • Define lines from tangents in 2D
  • LiveLink products and CAD Import
    • Now available for client/server mode
    • File import for Pro/ENGINEER Wildfire 5
  • File Import for CATIA V5, R20

Physics, COMSOL Multiphysics

  • AC/DC, thin slits modeled with lines
    • Decreased mesh density with discontinuous insulation condition on interior boundaries


  • Chemical Species Transport, Fluid Flow, and Heat Transfer:
    • New default settings give excellent balance between accuracy and memory usage: This is achieved using stabilized p1-p1 elements
    • Conditions for simulation of repetitive structures, so-called physics-specific periodic boundary conditions

Mesh

  • New pyramid element in 3D
    • Reads NASTRAN file containing pyramids
    • For swept meshes where the source and destination faces share an edge and the source face contains a triangular mesh
    • To convert a quad mesh to a triangular mesh for a face adjacent to a domain that that you want to mesh with tetrahedrons
    • Enables boundary layer mesh in 3D for a geometry with sharp edges

Study

  • The Study branch design is more transparent and user-friendly
  • A new time-discrete solver decreases memory consumption for large problems
    • Allows for arbitrary segregation within a time step
    • Decreased memory use in 3D fluid flow, where it solves the momentum and continuity equations one-by-one using pressure correction

Results

  • Shared settings for different plot types
  • Custom fonts in plots, which makes it possible to use Japanese or Chinese characters in plot titles and legends
  • Filter for plots
    • Plot elements according to
    • logical expressions
  • Go to Source button

The AC/DC Module

  • Ability to model thin structures using curves and lines
    • Discontinuous interior boundary conditions such as electric insulation for electric currents and perfect magnetic conductor for magnetic fields
  • User-friendly interface for simulation of rotating machinery

The Acoustics Module

  • New multiphysics interface for Acoustic-Structure interactions
    • Example application: Noise and vibration

The Chemical Engineering Module and the Reaction Engineering Module are Obsolete

  • The Chemical Engineering Module and the Reaction Engineering Module are merged into the Chemical Reaction Engineering Module
  • The fluid flow capabilities of the Chemical Engineering Module are now only available in the CFD Module

The Earth Science Module

  • Geothermal heating and thermal dispersion in the Heat Transfer in Porous Media interface
  • Darcy’s Law interface for variable density
  • Turbulent flow using a Forchheimer Drag extension of the flow resistance in porous media

The Heat Transfer Module

  • New solver decreases memory usage for 3D laminar flow
  • Automatic ramping of the velocity for turbulent flow yields increased robustness in solution of turbulent flows

The RF Module

  • Ability to model thin structures using curves and lines
    • Discontinuous interior boundary conditions such as electric insulation for electric currents and perfect magnetic conductor for magnetic fields

The Structural Mechanics Module

  • New elastoplastic material model
    • Version 4.0a (and also version 3.5a) handles von Mises or user-defined yield criteria
    • 4.0a includes a set of invariants (functionals of the Cauchy stress tensor), which describe more sophisticated yield functions and non-associated flow rule based on user-defined plastic potential
  • New solver defaults for decreased memory usage