COMSOL Multiphysics 5.3.0.316

COMSOL, the leading provider of multiphysics modeling and simulation software, has released an update to COMSOL Multiphysics 5.3 software, is a general-purpose software platform, based on advanced numerical methods, for modeling and simulating physics-based problems. All COMSOL software products undergo stability improvements that are introduced as updates.

COMSOL Multiphysics
- Improved the responsiveness of the online context-sensitive help.
- Fixed a character-encoding error for the Simplified Chinese help desk page.
- Fixed a problem that would cause an unnecessary mesh rebuild when opening an old model; this problem only affected models using Mesh Parts under Global Definitions.
- Fixed an issue pertaining to importing a mesh to the Geometry node in the model tree or when remeshing a - Deformed Geometry, where the existence of isolated edges and vertices could lead to a corrupt geometry and render the COMSOL Multiphysics software unstable.
- Added two new built-in methods for returning information associated with a model tree View node in the API; the view.geom() method returns either the geometry sequence or null for views not associated with a geometry, while the view.getSDim() method returns the space dimension.
- Changed the default constraint method for periodic conditions from the Elemental type to Nodal; this change makes the default constraint method consistent with earlier versions.
- Improved the terminology in the COMSOL Desktop® user interface for the Spanish and French languages.
- Improved the performance of initialization of solutions and made other miscellaneous performance improvements.
- Added an error message for when unmeshed domains are included in the selection of the Geometrical Optics or Ray Acoustics interfaces; ordinarily, unmeshed domains and voids should be excluded from the physics interface selection in these cases.
- Fixed a problem that prevented opening MPH-files stored on a Samba disk when running on macOS operating system software.
- Added functionality so that the iterative solver suggestion now works for acoustic-structure interaction in the time domain.
- Fixed a problem related to accessing locally installed help files when running COMSOL Multiphysics connected to a remote COMSOL Multiphysics server session.
- Improved the performance of certain variables used in the interfaces based on the boundary element method for the case where these were evaluated inside component coupling operators.
- Fixed a problem with the COMSOL Multiphysics server so that it now works properly on Linux clusters.
- The predefined iterative solver suggestion for acoustic-piezoelectric interaction models now works in the time domain.
- Improved the stability of the Application Library Update in various ways, including instant integration of added or modified model documentation.
- Fixed app layout issues and corrected an error that could be triggered as the result of an undefined variable.
- Fixed a problem when using the Stabilized Convection-Diffusion Equation interface in combination with a unit system set to None.
- The KdV Equation and Solitons model in the Equation Based folder in the COMSOL Multiphysics Application Library has been improved with a better time resolution.
- Corrected an error that caused the SCGS smoother with Vanka variables to work incorrectly in cluster simulations.
- Fixed a problem that would occur when saving MPH-files that were temporarily locked by other programs such as file synchronization software like Google Drive online storage service or Dropbox storage.
COMSOL Server
- Fixed several stability issues.
AC/DC Module
- Improved the performance of some of the demo applications in the Application Libraries.
- Improved the performance of certain variables used in the interfaces based on the boundary element method for the case where these were evaluated inside component coupling operators.
Acoustics Module
- Corrected the formulation of the time-domain PML for pressure acoustics in order to eliminate unwanted reflections for 2D axisymmetric models.
- Improved the dynamic help of the Acoustics Module.
- Fix of an error in the expression for the compressibility in the Johnson-Champoux-Allard-Lafarge option for the Poroacoustics feature.
Application Builder
- Fixed an issue with running External Class nodes through Batch jobs.
CAD Import Module
- Fixed an issue pertaining to performing Defeaturing and Repair where the error message "Error when serializing reference to: GeomObject" would appear when attempting to run a Study a second time.
- Fixed a problem with using the File Import for CATIA V5 product where importing certain CATIA V5 files incorrectly gave the error "File version is not supported" in version 5.3.
CFD Module
- Updated the Two-Phase Flow multiphysics coupling node in the model tree so that the temperature input field is always visible.
Chemical Reaction Engineering Module
- Updated the step-by-step modeling instructions for the Zone Electrophoresis model.
ECAD Module
- Fixed a problem with importing ODB++ files where certain text objects were not automatically identified and ignored.
- Fixed a problem when importing GDS files that contain mirrored arrays.
Electrodeposition Module
- Improved the step-by-step modeling instructions for the Rotating Cylinder Hull Cell model.
Geomechanics Module
- Fixed an error in the isotropic hardening option when used together with an elliptic cap in the soil plasticity material models.
Heat Transfer Module
- Corrected the expressions used for the postprocessing variables nteflux and nteeflux for models based on the Thermoelectric Effect interface.
- Enabled Thermal Expansion for models with an Isothermal Domain.
- Fixed a problem with the definitions of the Td and Tu variables, available on boundaries, which would occur in some configurations where an Isothermal Domain interface and a Thin Layer were combined.
- Improved the equation display for the Moist Air version of the Moisture Transport interface.
- Fixed the inverted legend on natural convection sketches.
- Fixed the definition of energy balance postprocessing variables for models that have a diffuse surface boundary condition on internal boundaries.
- Fixed a problem with missing entities in selections loaded from assembly components.
LiveLink for Inventor
- Fixed a problem where selections would sometimes not work subsequent to adding a feature node in the Model Builder of the One Window interface.
LiveLink for MATLAB
- Fixed a problem pertaining to using mphstart and mphlaunch when there was a space in the installation path of COMSOL Multiphysics.
- Fixed a problem pertaining to mphnavigator that would occur when clicking "Copy set" and simultaneously selecting a parameter node in the model tree.
Nonlinear Structural Mechanics Module
- Fixed a circular dependency error that would sometimes occur when combining viscoelasticity with a user-defined hyperelastic material.
- Corrected an error where a variable name could be undefined in the Navarro-Herring creep model.
Plasma Module
- Fixed an undefined variable error that could occur with the Symmetry boundary condition in the Heavy Species interface.
- Added the correct weak contributions for the Flux condition in the Heavy Species Transport interface on boundaries with a nonzero normal velocity.
Ray Optics Module
- Corrected the description of the gopminop1 component coupling, which contained an error.
- Fixed a problem with the Illuminated Surface feature so that the initialization of ray intensity now works in 2D axisymmetric models.
- Fixed a problem with the Inlet feature for the Geometrical Optics interface so that ray direction initialization now works in 2D axisymmetric models.
Structural Mechanics Module
- Corrected an error where, in certain cases, the strain variable computed in a Spring Foundation node had the wrong sign.
- Updated the heat source term for the Thermoelasticity interface so that it is now nonzero only when the Structural transient behavior setting is set to Include inertial terms.
- Corrected an error that made it impossible to use a Point Mass condition in the 2D version of the Beam interface; this error occurred in cases where the Study property Include geometric nonlinearity was enabled.
- Fixed an error in the External Stress node in the Shell interface where the added stress could become incorrect if the Global coordinate system option was selected and another coordinate system was simultaneously used in the Shell Local System node in the model tree.
- Fixed a problem where the computed moment was incorrect in cases where Evaluate reaction forces had been selected for a Rigid Connector in the Solid Mechanics interface; the result was previously scaled by the area of the boundaries to which the Rigid Connector was attached.
- Fixed a problem in the Beam interface that made it impossible to use variables or expressions in the input fields for Section Orientation.
- Fixed a problem that would occur when the Solid Mechanics interface was used together with the Optimization Module interfaces in certain cases, causing an excessive number of constraints to be generated.
- Corrected an error that made it impossible to combine the features External Stress Relation and Contact.
- Fixed a problem that would occur when exporting beam section properties.
- Fixed a problem that would occur when 2D models contained more than one Rigid Connector feature having a Mass and Moment of Inertia attribute.

About Comsol Multiphysics. You can use COMSOL Multiphysics and the suite of add-on products for any combination of electrical, mechanical, fluid flow, or chemical applications. The software lets you simulate any physics-based system that can be described with partial differential equations (PDEs). Version 5.3 provides simulation specialists with notable performance improvements and powerful app design and deployment capabilities with new modeling and development tools, solvers, and user-driven features. In many cases, users will experience a speedup of ten times or more in software responsiveness, such as in preprocessing tasks for handling models with several thousand boundaries and domains. With version 5.3 the boundary element method (BEM) is available for modeling electrostatics and corrosion effects. The Boundary Element method enables users to simulate models with infinite domains and voids, as well as to quickly set up simulations that combine wires, beams, surfaces, and solids in the same model. Typical uses for this functionality include the modeling of electrical cathodic protection, cables, or capacitive sensors. The algebraic multigrid (AMG) solver allows for solving large fluid flow problems with a single mesh level. The simulation process is more robust for problems such as fluid-structure interaction in a solar panel. Users handling large CFD models will benefit from the new algebraic multigrid (AMG) solver implemented in version 5.3. The AMG solver requires only a single mesh level and is now the default option for many fluid flow and transport phenomena interfaces. Users modeling turbulent flows can benefit from more robust computations with the automatic treatment of walls. This feature blends high-fidelity low-Reynolds formulation with wall functions. A Powerful Suite of Development Tools for Increased Productivity: The Model Builder now more rapidly handles geometry and mesh operations for models with large arrays and complicated solid operations in 3D. A new option for automatic geometry defeaturing through virtual geometry operations is now available to users. With the introduction of model methods in version 5.3, it is easy to automate repetitive operations directly in the Model Builder. The Application Libraries feature more than 50 new and updated tutorial models, allowing users to quickly adopt new features, tools, and modeling techniques. The tutorials span several areas, from permanent magnet motors, cables, and horn antennas, to supersonic flows, electronics cooling, and vibration and noise in a gearbox. More Functionality for App Design and Deployment: The Application Builder allows simulation specialists to create apps based on their multiphysics models. The app interface can be easily customized and accessed via a browser or a Windows client, which connects to a local installation of COMSOL Server. Updates to COMSOL Server include comprehensive log files for user activity as well as a centralized cluster administration setting in the COMSOL Server web interface for easy setup of running apps on clusters. In the Application Builder, app designers can now define customized actions when clicking on plots in graphics objects, enabling the easy creation of interactive apps.

About COMSOL Inc. COMSOL, Inc., a high tech engineering software company, provides software solutions for modeling and simulation of real world multiphysics systems. It offers COMSOL Desktop graphical user interface, a set of predefined user interfaces with associated modeling tools; and electrical, mechanical, fluid, chemical, multipurpose, and interfacing modules. The company serves engineers, researchers, and lecturers working for technical enterprises, manufacturing departments, research labs, and universities. COMSOL, Inc. was founded in 1986 and is based in Burlington, Massachusetts. COMSOL, Inc. operates as a subsidiary of COMSOL AB.

Product: Comsol Multiphysics
Version: 5.3 Build 317 (7 September 2017)
Supported Architectures: x64
Language: english
System Requirements: PC / MacOsx / Linux
Supported Operating Systems: here
Size: 4.2 Gb