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Before you begin, make sure that you run COMSOL 3.2a. On the Help menu, click "About COMSOL Multiphysics" to check your version.
The models are not compatible with COMSOL 3.2; you need COMSOL 3.2a. If you have installed COMSOL 3.2a from the
COMSOL 3.2a CD set, the model libraries already include these updated models.
There are five sets of models:
COMSOL Multiphysics Models
Electronic Conductor
This introductory model, which appears in the COMSOL Multiphysics Quick Start and Quick Reference, should include a geometry file, new_soldering_geom.mphbin, which you can use if you want to skip the geometry modeling steps. It is now available for download.
Shallow Water Equations
The updated and corrected Shallow Water Equations model includes artificial stabilization and tighter tolerances for the time stepping.
Sloshing Tank
The updated Sloshing Tank model uses the correct constraints.
Documentation for these models is available in comsolmultiphysics_models32a.pdf.
Chemical Engineering Module Models
Rising Bubble Using Level Sets
A new version of this model includes several improvements for easier modeling and improved accuracy. This version also corrects some errors in the documentation.
The model documentation is available in chemical_engineering_module_models32a.pdf.
Electromagnetics Module Models
Inductance of a Power Inductor
This model shows an inductance calculation on a large 3D geometry using the new higher-order vector elements and memory-efficient iterative solver settings.
The model documentation is available in electromagnetics_module_models32a.pdf.
MEMS Module Models
Microchannel H-Cell
This model makes use of the new predefined multiphysics coupling for flow with species transport to describe a microchannel H-cell for separation through diffusion.
Electroosmotic Biochip
This example models the electroosmotic flow in a DNA chip. The electroosmotic flow in the model couples the electric field to a Stokes Flow application mode at the boundaries. If you want to skip the geometry modeling, use the geomertry in electroosmotic_bio_chip_geom.mphbin.
Thermoelastic Damping in 2D and 3D
Thermoelastic damping is an important factor when designing MEMS resonators.These models show how to model thermoelastic damping in a MEMS resonator using fully coupled thermal and structural equations in both 2D and 3D.
Documentation for all four models is available in mems_module_models32a.pdf.
Structural Mechanics Module Models
In-Plane Truss
The In-Plane Truss example model contains a linear static analysis of a simple 2D pin-jointed truss using the new Truss application mode.
Acoustic-Stucture Interaction
The eigenvalue formulation in the Acoustics application mode now provides second-order eigenvalues. To match the first-order eigenvalues in the Mindlin Plate application mode, the updated model contains some changes to make coupling work correctly in 3.2a.
Coupled Vibrations
The model now uses some simplified settings for the density and the normal acceleration.
Traffic Tunnnel
The updated version of this model shows how to use a Mohr-Coulomb nonlinear material model by making the Drucker-Prager criterion identical to the Mohr-Coulomb criterion. This version also uses more realistic material data and a simplified modeling approach with two application modes instead of three.
Documentation for the In-Plane Truss, Coupled Vibrations, and Traffic Tunnel models is available in structural_module_models32a.pdf. (The COMSOL 3.2a Release Notes contain updated step-by-step instructions for the Acoustic-Structure Interaction model.)
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:\COMSOL32. This is the directory where the file licenseinfo.txt and the directories comsol and doc are located.
UNIX, LINUX, and Macintosh Installation Instructions
Download either of the tar archives. Unpack the tar archives in the COMSOL installation directory, for example, /usr/local/comsol32 by typing
cd /usr/local/comsol32
tar xf {download directory}/comsolmultiphysics_models32a.tar
tar xf {download directory}/chemical_module_models32a.tar
tar xf {download directory}/electromagnetics_module_models32a.tar
tar xf {download directory}/mems_module_models32a.tar
tar xf {download directory}/structural_module_models32a.tar
If you have installed COMSOL 3.2a from the COMSOL 3.2a CD set, COMSOL is typically installed in /usr/local/comsol32a. The typical Macintosh installation directory is /Applications/COMSOL32a.
List of Installed Files
New versions of the files listed below will be installed in the directory updates located in your COMSOL 3.2 installation directory.
COMSOL Multiphysics
- models/COMSOL_Multiphysics/Equation-Based_Models/shallow_water.mph
- models/COMSOL_Multiphysics/Fluid_Dynamics/sloshing_tank.mph
- models/COMSOL_Multiphysics/Multiphysics/new_soldering_geom.mphbin
Chemical Engineering Module
- models/Chemical_Engineering_Module/Momentum_Transport/rising_bubble.mph
Electromagnetics Module
- models/Electromagnetics_Module/Electrical_Components/power_inductor.mph
- models/Electromagnetics_Module/Electrical_Components/power_inductor_geom.mphbin
MEMS Module
- models/MEMS_Module/Actuator_Models/thermoelastic_damping_2d.mph
- models/MEMS_Module/Actuator_Models/thermoelastic_damping_3d.mph
- models/MEMS_Module/Microfluidics_Models/microchannel_hcell.mph
- models/MEMS_Module/Microfluidics_Models/electroosmotic_bio_chip.mph
Structural Mechanics Module
- models/Structural_Mechanics_Module/Acoustic-Structure_Interaction/acoustic_structure.mph
- models/Structural_Mechanics_Module/Acoustic-Structure_Interaction/coupled_vibration.mph
- models/Structural_Mechanics_Module/Benchmark_Models/in-plane_truss.mph
- models/Structural_Mechanics_Module/Nonlinear_Material_Models/traffic_tunnel.mph