Icepak Classic Project Conversion Limitations

The following features and settings are not supported and, therefore, not converted when opening an Icepak Classic .tzr file in the Electronics Desktop.

Note: When opening a Classic Icepak project consisting of many mesh operations or boundary conditions, the conversion process may take longer to complete.

Naming

The Electronics Desktop limits the number of characters for a given object name to 60 characters. Icepak Classic objects with names longer than 60 characters are truncated.
The Electronics Desktop limits the number of characters for a given material name to 45 characters. Icepak Classic objects with names longer than 45 characters are truncated.
Minor naming differences may occur (e.g., block.1 converted to block_1).
Names that are considered unique in Icepak Classic (e.g., block.1 and Block.1) may be considered duplicate in the Electronics Desktop. To avoid incorrect assignment of boundary conditions, names are made unique by appending "_1" to the name (e.g., block_1 and Block_1_1).
For all assemblies/mesh regions, _mr is appended to the assembly name.
Point monitors will be prepended with pmon_, and face monitors are prepended with fmon_.
All non-ascii characters and special characters are translated as an underscore character (_).
When opening an Icepak Classic file in the Electronics Desktop on a Linux system, the file name and file path must not contain more than one space.

Project Settings

Object groups

Mesh Settings

Note:

In Icepak Classic, an assembly's local Maximum element size can be overridden by global mesh settings. Ensure that Maximum element size for mesh regions in the Electronics Desktop are set appropriately before meshing.

Hexa unstructured mesh type is converted to Mesher-HD
Hexa cartesian mesh type is converted to Mesher-HD
External assemblies

Mesh Operation

Mesh operations are not supported for Packages and all unsupported Icepak Classic Objects.
Mesh operations are not supported for assemblies.
A mesh operation is not created for a fan guard.

Note: Mesh operations for Icepak 3D Native Components (Fans, Heatsinks, and PCBs) can be assigned on individual pieces of geometry that compose the component.

Mesh Reuse Settings

Note: For Fans, Heatsinks, and PCBs, you can apply mesh reuse settings to individual pieces of geometry.

Assemblies
Cabinet
Fan
Heatsink
PCB
Groups
Sheet bodies are not supported. Only solid bodies are supported.

Note: Mesh reuse is supported for objects with converted geometry. For example, a Cabinet with a wall specified as a side is supported, whereas a block with thermal properties specified for an individual side is not supported.

Object Priority Settings

The following are not assigned priority values:

Assemblies
Unsupported Icepak Classic Objects
Inactive Objects

Solver Settings

Surface to surface radiation is converted to Discrete ordinates radiation.
Note:
In the Electronics Desktop, Discrete ordinates is enabled even when Surface to surface radiation contains no objects selected under Participating objects in the Icepak Classic project.
Autosave interval for steady-state simulations

High Performance Computing Settings

The number of cores and tasks must be specified in the Electronics Desktop after converting a Classic Icepak file.

Transient Settings

Solution restart settings
Joule heating properties for block and network boundary conditions
Fields summary times (defaults to 0s)

Materials

Biaxial materials
Anisotropic materials

Geometry

Geometry with applied texture
A polyhedron whose base and top have differing numbers of sides is not supported (e.g., the base is a hexagon and top is a pentagon).

Icepak Classic Objects

PCBs with MCAD substrates that contain ECAD traces inside are not supported.
Packages
- ECAD-based packages: flip-chip and PBGA packages are supported; others are not supported.
- Non-ECAD-based packages: stacked die, package-on-package, and QFN are not supported.
- MCAD substrates with ECAD traces inside are not supported
Heat exchangers
Periodic boundaries

Blocks

SIwave profile (solid blocks)
LED source (blocks)
MCAD blocks with ECAD
Blocks with ECAD with Resize object with traces enabled

Networks

For some cases, the schematic editor displays Page ports.
Networks objects with CAD faces are not imported.

Walls

Moving wall

Plates

Temperature limit

Resistances

Flow direction
Species

PCBs

Only ECAD based PBGA and Flip-chip package types are supported.
ECAD PCB with MCAD-based substrate
PCBs with ECAD with Resize object with traces enabled
Multiple ECAD Layout Designs under the same original project in an Icepak Design
SIwave profile

Packages

Mesh operations
Non-ECAD packages of type Stacked Die, Package on Package, QFP, and QFN
ECAD package with MCAD-based substrate
Non-ECAD packages are not imported as a 3D component.

Heatsinks

Simple heatsinks
Cylindrical fin heatsinks: Staggered pin alignment
Cells between pins (a per-object mesh setting)

Fans

Polygonal fan
MCAD fan geometry is imported without thermal properties.

Note: In Classic Icepak, a 3D MCAD fan cannot be created. When a 2D MCAD fan is imported into the Electronics Desktop, the geometry is imported as an MCAD sheet. No native fan component is associated with the imported MCAD geometry and, therefore, does not appear in the Project Manager or History tree.

Fan guard
Gauge pressure

Grilles

Velocity loss coefficient is set to automatic because device/approach options are unsupported.
Flow direction
Species

Sources

Spatial profile for 3D sources
Temperature limit
LED
Species
Fixed temperature for 3D sources
Transient joule heating properties for 3D sources

Openings

Species
Turbulence
Spatial profile for openings with mass flow specified

Chip Thermal Models

CTM powermaps are converted to individual sources.

Assemblies

Assemblies with unsupported Icepak Classic Objects
Per-object mesh settings for Packages
An active object under an inactive assembly is not imported unless the TZR_Inactive_items environment variable is set.
Assemblies superimposing the cabinet object are imported. The mesh region geometry must be edited to exist within the computational domain (Region) prior to meshing or running the simulation.

Monitors

Surface monitors on a PCB, Fan, or Heatsink
Point monitors assigned to a 3D CAD source object with a Thermal specification of Fixed Temperature are not imported.

Post-processing

Show mesh for plane cuts, object faces, and point reports
Summary report information on Block-based PCB objects
For light-weight imported CAD geometries, only the full object can be selected when creating object faces and field summary entries.
For light-weight imported CAD geometries in Field Summary entries, Inside, Interior, and Sides options are not supported.

ECAD

For PCBs, Packages, and Blocks with ECAD, only non-zero thickness layers are imported.
Projects with any ECAD cannot be imported into Ansys Electronics Desktop Student.

Related Topics:

Opening Icepak Classic Projects