Version 11.1 Major Enhancements and Bug Fixes
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Meshing and Geometry Translation:
- The mesher will attempt to create an accurate mesh for all geometries, including those
which were previously flagged for ACIS-entity errors during design validation.
After initial mesh is complete, the profile will indicate when repairs have been made to
a model, and the quantity of repairs will be displayed per object under the mesh
statistics tab of the solution data panel.
- Under Modeler->Validation Settings, users can now set the level to which HFSS checks a
model for faults during 3D model validation.
- There is an additional option within the Model Resolution mesh operation setup labeled
"Auto Simplify Using Effective Thickness". With this option selected the mesher will
automatically choose a model resolution value for each object based on its effective
thickness.
- Nastran (.nas) geometry import is now available.
- Parasolid and Unigraphics (Unigraphics import available only on Windows) geometry files
can now be imported into HFSS.
Post-Processing:
- Near-field and far-field computation algorithm has been reworked to improve calculation
time.
- Fields are now loaded only from the model area that is relevant to the post-processing
quantity being calculated, therefore reducing the time needed to generate a field plot.
- There is a new option in fast sweep setup labeled "Generate Fields (All Frequencies)".
This setting enables HFSS to compute fields for all frequencies during a fast sweep analysis,
subsequently storing them to disk. With this option selected, fields will not need to be
recalculated when HFSS is post-processing the data.
Known Problems, Workarounds, and Undocumented Features
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General
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1) You cannot check out a license that is locked to a USB dongle on Windows
Vista x64 when connecting to the Vista machine through Remote Desktop. This is a
known issue in FLEXlm.
2) Windows XP Service Pack 2 can mishandle GDI objects
Windows XP Service Pack 2 (SP2) may cause random crashes and/or odd behavior
with Ansoft software after prolonged use. Windows XP SP2 no longer manages
GDI objects in a proper manner, causing fatal problems for programs that make extensive
use of GDI objects such as HFSS. Microsoft article KB319740 discusses the problem
in the first release of Windows XP and notes that a fix was included in SP1.
Please note that the problem occurs only after prolonged use. For example, you
would have to open and close a model editor window in HFSS approximately 50
times before seeing the problem.
The workaround is to switch to "Windows Classic" theme (via the first tab of
Windows Control Panel/Desktop). Any fix will most likely come from Microsoft.
3) NVIDIA Quadro MXR/EX graphics card driver
If you are using the NVIDIA Quadro2 MXR/EX video card on Windows XP, you should
also download Version 40.41 or greater video driver, available for download
at
http://www.nvidia.com.