COMSOL 3.3a MODELS

Related

COMSOL Multiphysics Models:
Mac OS X 18.7 MB
Windows 20.3 MB
Linux/Solaris 20.2 MB
Acoustics Module Models:
Mac OS X 78.9 MB
Windows 79.3 MB
Linux/Solaris 79.2 MB
Chemical Engineering Module Models:
Mac OS X 262.2 MB
Windows 262.8 MB
Linux/Solaris 262.7 MB
Heat Transfer Module Models:
Mac OS X 5.1 MB
Windows 5.3 MB
Linux/Solaris 5.2 MB
MEMS Module Models:
Mac OS X 56.2 MB
Windows 56.8 MB
Linux/Solaris 56.7 MB
RF Module Models:
Mac OS X 90.3 MB
Windows 91.0 MB
Linux/Solaris 91.0 MB
Reaction Engineering Lab Models:
Mac OS X 7.2 MB
Windows 7.3 MB
Linux/Solaris 7.2 MB
Structural Mechanics Module Models:
Mac OS X 3.5 MB
Windows 3.7 MB
Linux/Solaris 3.7 MB

Before you begin, make sure that you run COMSOL 3.3a. On the Help menu, click "About COMSOL Multiphysics" to check your version. The models are not compatible with COMSOL 3.3; you need COMSOL 3.3a. If you have installed COMSOL 3.3a from the COMSOL 3.3a CD set, the model libraries already include these updated models.

Documentation for all new and updated models is available in the PDF version of the COMSOL 3.3a Release Notes: release.pdf.

There are eight sets of models:


COMSOL Multiphysics Models

Joule Heating in a MEMS Device

This model exemplifies the use of the new Material Library in the modeling of Joule heating in MEMS devices.

PID Control

This model now uses magnitude-controlled streamlines for a better visualization of the velocity field.

Transport and Adsorption

In the previous version of this model, the expression for the velocity v in the y direction did not use the correct distance between the plates.

Micromixer

The updated version of this model uses the Geometric multigrid solver.


Acoustics Module Models

Jet Pipe

This new model of a jet-engine exhaust illustrates the use of the new vortex-sheet boundary condition.

Muffler with Perforates

This new model of a car muffler uses the new perforated-plate impedance boundary condition.

Transient Gaussian Explosion

This 2D model has been updated to use a transient line source.

Bessel Panel

Cylindrical Subwoofer

Hollow Cylinder

Scattering from a Plate with Ribs

These four models make use of the improved far-field capabilities in version 3.3a.


Chemical Engineering Module Models

Diesel Particulate Filter

This new model describes a 3D diesel particulate filter using coupled mass, energy, and momentum balances.

Bending Pipe

An all-new version of this model compares results obtained by the k-ε turbulence model and the k-ω turbulence model with experimental data.

Forced Turbulent Convection Cooling of a Hot Plate

This model of turbulent conjugate heat transfer now includes the use of a realizability constraint.

Rotating Disk

Turbulent Backstep

Turbulent Residence Time

Turbulent Residence Time 3D

Updated versions of these four models make use of the improved turbulence modeling in version 3.3a.

Rising Bubble

Oscillating Droplet

These models are now based on the new Level Set Two-Phase Flow application mode.

Current Density Distribution in a PEM Fuel Cell

This model of the current distribution in a proton exchange membrane fuel cell now uses assemblies and needs only one 3D geometry and one Maxwell-Stefan Diffusion and Convection application mode.

Microchannel Cell

For best convergence, this model now uses the PARDISO direct solver.

Falling Film

To avoid mesh dependence and improve accuracy, the updated version of this model uses tighter tolerances for the time stepping.


Heat Transfer Module Models

A Shell-and-Tube Heat Exchanger

This new model describes turbulent flow in part of a shell-and-tube heat exchanger. It uses the k-ω turbulence model to model the fully developed turbulent flow.

Forced Turbulent Convection Cooling of a Hot Plate

This model of turbulent conjugate heat transfer now includes the use of a realizability constraint.

Chicken Patties

An updated version of this model now uses the unit syntax to specify the model using degrees Celsius.

Friction Stir Welding

An updated version of this model uses an interpolation function instead of a fitted analytic function for the aluminum yield stress. In addition, the model uses heat sources on the pin and shoulder surfaces instead of a volume heat source inside the pin, and the definitions of constants and expressions include SI units.


MEMS Module Models

Capillary Filling

This new model simulates the filling of a narrow channel due to surface tension and wall adhesion. The model uses the new Level Set Two-Phase Flow application mode, including the predefined boundary condition for wetted walls (wall adhesion).

Thermal Expansion

This new model analyzes the thermal expansion in a MEMS device, such as a microgyroscope, where the thermal expansion should be as small as possible. The model uses temperature-dependent material properties from the Material Library, which you thus need in order to build the model.

AC Electrokinetic 2D

Several corrections and improvements have been made to this microfluidics model and its documentation, including addition of units and magnitude-controlled streamlines.

Inkjet

This model now uses the new Level Set Two-Phase Flow application mode.

Comb Drive

An updated version of this model uses new mesh settings and scaling of variables that make it easier to solve.

Squeezed-Film Gas Damping in an Accelerometer

Among the models that describe squeezed-film gas damping in an accelerometer, the 3D version (accelerometer3d.mph) now uses smaller time steps to avoid the attenuation caused by time steps that are too large.

Lamella Mixer

This model now uses artificial diffusion of the streamline diffusion type to stabilize the mass balance equation for the convection and diffusion.


RF Module Models

Coaxial to Waveguide Coupling

This is a new model of a coaxial-cable feed line that excites a propagating wave inside a rectangular waveguide. The model uses the port boundary condition with assembly pairs, which makes it possible to excite waves at the inner boundary of a perfectly matched layer.

Balanced Patch Antenna for 6 GHz

An updated version of this model uses the new Port boundary condition and contains some other minor improvements.


Structural Mechanics Module Models

Thermal Expansion

This new model analyzes the thermal expansion in a MEMS device, such as a microgyroscope, where the thermal expansion should be as small as possible. The model uses temperature-dependent material properties from the Material Library, which you thus need in order to build the model.

Tube Connection

Because of the new default setting for the augmented Lagrangian solver, the step-by-step instructions for the Tube Connection model can be simplified. These simplifications do not affect the model. Also, the IGES import no longer splits the inner boundary of the bolt hole into two boundaries. This results in the SolidWorks and IGES versions having identical boundary numbering.


Reaction Engineering Lab Models

Compression Ignition of Methane

This new model illustrates the homogeneous charge compression ignition (HCCI) of methane. The combustion kinetics are described by 53 species taking part in 325 reactions.

CSTR Startup

This new model simulates the startup phase of a continuous stirred tank reactor (CSTR) used to produce propylene glycol. Results show how certain initial conditions lead to violations of the reactor safety limits.

Diesel Filter

The 3.3a version provides revised and improved versions of this model and the corresponding multiphysics model.

Chlorine Scrubber

The updated version of this model uses the new automatic initialization of the slave speciesī concentrations.

Protein Adsorption

Updated versions of these models use the new automatic initialization of the slave speciesī concentrations.

Space-Dependent HI Reactor

An updated version of this model created in COMSOL Multiphysics uses a finer mesh.



PC Installation Instructions

Download either of the self-extracting executable files. Run the executable and unpack the files to your COMSOL installation directory, for example, C:\COMSOL33. This is the directory where the file licenseinfo.ini and the directories java and doc are located.


UNIX and Linux Installation Instructions

Download either of the tar archives. Unpack the tar archives in the COMSOL installation directory, for example, /usr/local/comsol33 by typing

cd /usr/local/comsol33
gunzip {download directory}/comsolmultiphysics_models33a.tar.gz
tar xf {download directory}/comsolmultiphysics_models33a.tar
gunzip {download directory}/acoustics_module_models33a.tar.gz
tar xf {download directory}/acoustics_module_models33a.tar
gunzip {download directory}/chemical_module_models33a.tar.gz
tar xf {download directory}/chemical_module_models33a.tar
gunzip {download directory}/heat_transfer_module_models33a.tar.gz
tar xf {download directory}/heat_transfer_module_models33a.tar
gunzip {download directory}/mems_module_models33a.tar.gz
tar xf {download directory}/mems_module_models33a.tar
gunzip {download directory}/rf_module_models33a.tar.gz
tar xf {download directory}/rf_module_models33a.tar
gunzip {download directory}/structural_module_models33a.tar.gz
tar xf {download directory}/structural_module_models33a.tar
gunzip {download directory}/reaction_engineering_lab_models33a.tar.gz
tar xf {download directory}/reaction_engineering_lab_models33a.tar

If you have installed COMSOL 3.3a from the COMSOL 3.3a CD set, COMSOL is typically installed in /usr/local/comsol33a. The typical Macintosh installation directory is /Applications/COMSOL33a.


Mac OS X Installation Instructions

Mount the downloaded disk image by double-clicking it. Run the AppleScripts that contain the new and updated models. It will ask you to locate your COMSOL installation folder, for example, "MacintoshHD:Applications:COMSOL33". This is the folder where the file licenseinfo.ini and the folders java and doc are located.


List of Installed Files

The following files will be installed in the model directories in your COMSOL 3.3 installation directory.


COMSOL Multiphysics



Acoustics Module



Chemical Engineering Module



Heat Transfer Module



MEMS Module



RF Module



Structural Mechanics Module



COMSOL Reaction Engineering Lab

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