COMSOL 3.4 HOTFIX 2
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This COMSOL 3.4 Hotfix 2, released January 31 2008, is cumulative and includes the COMSOL 3.4 Hotfix released December 12th, 2007. The fix addresses the following:
COMSOL Multiphysics
It is now possible to run all solvers on the command line in the COMSOL Script Desktop also when working on a computer with several processors.
Piecewise general function evaluations now work also when running COMSOL in parallel in a multiprocessor environment. This fix also includes some minor thread-safety improvements.
You can now open all models using the PDE General Form application mode with weak constraints.
When using the eigenvalue solver together with an iterative method, the tolerance used in the termination criteria is now the number given in the Relative tolerance edit field in the Linear System Solver Settings dialog box. On the command line the tolerance used is now the one given by the property 'itol'.
Chemical Engineering Module and Heat Transfer Module
The heat-flux calculation in the "wall" boundary group has been corrected in the turbulent versions of the Non-Isothermal Flow application modes.
Chemical Engineering Module
The boundary variable Tplus is now available in the Convection and Conduction application mode when using the k-ω turbulence model. This variable is required to properly set up the wall boundary condition when using the predefined multiphysics coupling that you select by choosing Flow with Variable Density>Non-Isothermal Flow>k-ω Turbulence Model
Heat Transfer Module
Radiation view factor computations now work also when running COMSOL in parallel in a multiprocessor environment. This fix also includes minor thread-safety improvements.
RF Module
It is now always possible to open models built using the In-Plane Waves or Electromagnetic Waves application modes with far-field variables.
The far-field analysis has now been activated for In-plane waves, scattered field analysis.
AC/DC Module
A sign error for the B-field has been corrected for the Meridional induction currents application mode.
Reaction Engineering Lab
When performing parameter estimation with multiple data sets in COMSOL Reaction Engineering Lab, you can now use data sets with different number of data points.
The parameter estimation feature in COMSOL Reaction Engineering Lab now includes improved functionality when estimating multiple initial concentrations.
Constraints for transient Fluid-Structure-Interaction (FSI)
The FSI entries for transient analysis available in the Structural Mechanics and MEMS modules are updated.
The Fluid application mode now uses weak constraints because strong constraints are not supported for transient analysis in the FSI context.
Installation
PC Installation Instructions
Download the self-extracting executable file comsol34_hotfix2_win32.exe or comsol34_hotfix2_win64.exe depending on if you have a 32-bit or 64-bit Windows system. Close all instances of COMSOL and MATLAB programs before you begin the installation process.
Run the executable and unpack the files to your COMSOL installation directory, for
example, C:\COMSOL34. This is the directory where the file licenseinfo.ini and the
directories java and doc are located.
UNIX and Linux Installation Instructions
Download the tar file comsol34_hotfix2_xxx.tar where the xxx part depends on your platform.
Change to the COMSOL installation directory, for example, /usr/local/comsol34
(type cd /usr/local/comsol34). Type
tar xf [download file path]/comsol34_hotfix2_xxx.tar
This will untar a script (comsolupdate) and a JAR-file (comsolupdate.jar)
to your COMSOL installation directory. To apply the patch run
./comsolupdate
from your COMSOL installation directory. This will unpack files from the JAR-file and replace the corresponding files in your COMSOL 3.4 installation.
Mac OS X Installation Instructions
Mount the downloaded disk image by double-clicking it. Run the AppleScript "COMSOL 3.4
Hotfix". It will ask you to locate your COMSOL installation folder, for example, "Macintosh
HD:Applications:COMSOL34". This is the folder where the file licenseinfo.ini and the
directories java and doc are located.
Check the Installation
Do the following to check that the installation is complete:
- Start COMSOL Multiphysics.
- On the Help menu, click About COMSOL Multiphysics.
- Check that the version number is 3.4.0.250.