Nos complace anunciar la disponibilidad de la nueva revisión de COMSOL, versión 4.4 Update 1, que corrige ciertos errores y proplemas de estabilidad incluyendo varios modulos.

A continuación puede consultar una lista detallada de las mejoras incluidas en la revisión

COMSOL Multiphysics

COMSOL now supports Simplified Chinese as one of the languages that you can choose to localize the COMSOL Desktop environment.

A Deselect Box button is now available to deselect (clear) all selections inside a rubberband box.

Improved stability and GUI performance.

Support for system fonts now works correctly.

Improved support for running COMSOL on computers with non-Latin usernames.

The convergence plot is now correct when using the double dogleg solver in a continuation sweep.

Plot while solving now updates only on the innermost study level.

The unit for Planck's constant (a predefined physical constant) now displays correctly.

New strings are available to distinguish "second" meanings in local languages: order (second is between first and third) versus time unit (a second is one 60th of a minute).

Corrected unit of measurement of inward flow condition in non-3D models using Transport of Diluted Species.

Keyboard accelerators now work correctly when running COMSOL on Ubuntu 12.04.

The eigenvalue solver now gives a warning if not all eigenvalues are found.

Reuse solution for previous step now works correctly for auxiliary sweeps of linear iterative solvers.

Disabled study steps are now shown with the correct indentation in the model tree.

The Time-explicit solver now correctly stores the solution at converged time steps if there is an error.

Plot while solving now works correctly when running from the API with a graphics server.

Settings window sections can now be expanded and collapsed using arrow keys in the Windows version of the COMSOL Desktop.

It is now possible to update model libraries also after choosing not to install models during the initial software installation.

Changing the order of table entries now works correctly when defining polygons using tables.

AC/DC Module

External Current Density will no longer be applicable together with E-J characteristic.

Several GUI stability improvements.

The Thin low permittivity gap condition now works together with a moving mesh.

Acoustics Module

Several GUI stability improvements.

CFD Module

The unit of the drag coefficient in the Euler-Euler Model interface is now correct.

Performance improvements for Reacting Flow, low-Re k-epsilon.

Stability improvements for some analyses in Spallart-Allmaras turbulence model.

Stability improvements for Wire gauze.

Stability impovement for Laminar outflow conditions for some solver selections.

Chemical Reaction Engineering Module

Corrected unit of measurement of the Equilibrium Constant in the Reaction Engineering interface.

CHEMKIN kinetic data import corrected for third-body reactions.

Several GUI stability improvements.

Electrochemistry Module

Stability improvements to moving boundary problems in 2D axisymmetric models.

Fatigue Module

The elastic solution with notch assumption in the strain-based fatigue has been corrected. A distinction between tensile and compressive stresses is now made.

Heat Transfer Module

Discontinuous (default) and continuous Lagrange elements are now available for damage integral dependent variables discretization.

Variable definition for boundary heat source variable is now synchronized with the user input.

Use of prefix in variables names now prevents duplicate variable names when multiple pair temperature continuity conditions are active on the same boundary.

Duplicate plot groups in postprocessing menus have been removed.

Saturation pressure computation is more accurate, especially for temperatures far from 100 °C.

Corrected revolution angles in the default plot of the 2D axisymmetric version of Heat Transfer in Thin Shells.

MEMS Module

Modified the material properties of Quartz to include both right- and left-handed properties defined according to the two commonly used standards.

Corrected a problem which caused pressure follower loads to be applied in the wrong direction in some circumstances within the Electromechanics interface.

Fixed an issue with the expression for the time averaged heat source variable created by the Thermoelasticity interface.

Molecular Flow Module

It is now possible to apply the Number Density Reconstruction feature to Axial Symmetry boundaries.

Optimization Module

The BOBYQA optimization solver now correctly disregards unsupported constraints.

The BOBYQA optimization solver now respects the setting for maximum number of simultaneous function evaluations also for the initial evaluation.

The handling of axisymmetric or renamed coordinates with the Least-squares optimization objective has been corrected.

Particle Tracing Module

The Coulomb and Lennard-Jones Particle-particle interaction forces now take into account the out-of-plane position when the Include out-of-plane degrees of freedom property is active.

The equation display for the Monte Carlo collision model option in the Elastic Collision Force has been corrected.

The out-of-plane velocity now correctly takes into account changes in the particle mass when the Include out-of-plane degrees of freedom property is active.

The out-of-plane particle velocity is now updated correctly when the Include out-of-plane degrees of freedom property is active and the Bounce option is used in the Wall boundary condition.

Field-dependent forces can now be assigned to a subset of domains.

Equation display for normal Inlet velocity is now correct.

Pipe Flow Module

Pumps, bends, and valves in the Pipe Flow Module now work with moving meshes.

Corrected problem with when adding wall layers to rectangular pipe shapes.

Plasma Module

Importing a Chemkin thermo or transport file now works correctly in the Plasma Module physics interfaces.

Units for the forward rate constant in the Electron impact reaction and Reaction features are now correct.

RF Module

Second-order scattering boundary condition can now be used in 2D axisymmetry.

Stability and accuracy improvements.

Semiconductor Module

Fixed an issue with certain options for the initial conditions when the Semiconductor interface is coupled to the Heat Transfer in Solids interface.

Corrected the variable displayed next to the user input for the Relative Acceptor Energy for the Incomplete Ionization settings in the Semiconductor Material Model node.

Improved the smoothing settings for 1D default plots.

Nonfunctional user inputs in the User Defined Recombination feature no longer appear in the user interface.

Structural Mechanics Module

It is now possible to model friction together with rigid domains.

Using rigid connectors in a Shell interface now works as expected also if the model contains a Solid Mechanics interface.

When using a Rigid Connector with a Mass and Moment of Inertia subnode in the Shell interface, generation of the solver sequence could fail for a Transient solver.

Coriolis forces in frequency domain analysis have been corrected.

ECAD Import Module

Fixes issue with parsing of certain ODB++ archives.

Fixes issue with decompression of certain ODB++ archives.

LiveLink™ for Excel®

The LiveLink add-in is now correctly installed for 64-bit version of Excel.

The LiveLink add-in can now be loaded by 64-bit Click-to-Run version of Excel 2013.

Materials with uppercase letters now appear correctly in the Material Browser after export from an Excel spreadsheet.

The correct unit is now displayed for stress tensor in the settings for material export.

Material property names are now used to generate the function names for field-dependent material properties.

Several stability improvements.

LiveLink™ for SolidWorks®

Fixes problem with disappearing COMSOL Multiphysics tab in SolidWorks after de-activating and re-activating the LiveLink add-in.

Several stability improvements and corrections for the bidirectional and the One Window interfaces.

LiveLink™ for Inventor®

Selections for materials are now synchronized for surface bodies in assembly components.

Assemblies with surface bodies in components are now synchronized.

Selections for materials are now synchronized for surface bodies in part files.

Fixes problem with unloading of certain add-ins when loaded in Inventor at the same time as the LiveLink add-in.

Several stability improvements and corrections for the bidirectional and the One Window interfaces.

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