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Icepak FAQ: Where is my cursor in the Icepak main window when I press the 'shift'-key ?


On the Windows NT platform the cursor disappears when pressing the 'shift'-key to select objects.<br>The objects can be selected, but the cursor is invisible in the Icepak main...

Icepak - Low Temperatures on model with Radiation


Imagine a unit modeled in free air on 5 sides. unit sitting on an adiabatic surface.<br><br>Unit is a vented box containing a PCB + components<br><br>Sides of box are made...

FLUENT - Running in batch mode (background) on Windows platforms


<br>FLUENT users on Windows can run in the background using the following command from the DOS prompt:<br><br>fluent 3d -g -i input.jou<br><br>where input.jou is a...

FLUENT - How to access radiation temperature in a UDF


<br>A user wants to access the radiation temperature in a UDF.<br>Solutions are available for P1 and DOM radiation models.<br>Radiation Temperature in a given cell...

FLUENT - How to define your own turbulent thermal conductivity, C_K_T


The UDF macro DEFINE_PROPERTY allows you to only modify laminar material properties.<br>When you do a turbulent simulation, FLUENT will always compute a turbulent thermal conductivity and...

ICEPAK FAQ - IDEAS IGES Import failure - no surfaces imported


Try to import IDEAS iges - and receive error that no surfaces were found/imported.<br><br>Problem is due to default settings for IGES export from IDEAS - default is to export solids,...

FLUENT 6 - Import 2d FLUENT 4 euler-euler data file to FLUENT 6


Customer would like to continue in FLUENT 6 running an unsteady Euler-Euler FLUENT 4 calculation<br>that took several weeks to converge.<br>That is to say, he would like to import...

Icepak FAQ: When to use openings vents and fans


What are the differences between openings fans and planar resistances<br><br>Fans: If you want to fix flow (volumetric or mass rate) use external fans. External fans can only be used...

ICEPAK FAQ: Writing Macros in Icepak - Getting started


How do I write my own Macros in Icepak?<br><br>The macros are written in TCL/TK language. Many of the comonly used utilities for typical Icepak macro writing are available as...

FLUENT - Correct Prandtl Number requires consistent properties


In high-speed flows one may encounter incorrect temperature contours that are associated with incorrect Prandtl Numbers. One manifestation of this are base tempertures (behind a projectile) that...

FLUENT - VOF to model draining tank, swirling liquid, vortex at the drain
drain.


It is possible to model a draining tank filled with a<br>swirling liquid, and to capture the vortex that forms at the drain. The<br>goal was to pinpoint the time at which the first gas...

FIDAP - Some colors absent when using XWINDOW device on HP workstations


Red and yellow are missing when displaying with the XWINDOW device on an HP workstation.<br><br><br>Limiting the number of colors to 128 gives the full color spectrum, this can...

FLUENT - How to make an animation in flpost for unsteady fluent data


There is some confusion as to how to use transient data from fluent to make an animation in flpost. The reasons you may want to use flpost for this are:<br>1) licensing (possible to run...

Airpak - System runs out of memory while post-processing a large size job


The case I am working on has a mesh size of about 1.5 M cells. I have completed a transient solution for a case involving species. The transient run was for 2hrs with 10 sec. time steps being...

FLUENT 6 - How to display face normal


How to do vector plot of face normal vectors in FLUENT 6? This can be used, for example, to determine which side the shadow of a wall is facing. The shadow is facing the opposite of the...

FLUENT 6 - How to post-process force at each face


Contour plot of force components. It would be useful to be able to display contour of force in the flow direction to determine where in the domain the contribution of drag is high.<br>To...

FLUENT 6 - Character declaration and initialization in interpreted UDFs


FLUENT does not permit the simultaneous type declaration and initialization of a character array in interpreted UDFs.<br><br>the following example will...

FLUENT - Text User Interface (TUI) commands for Tecplot export


How to use TUI commands in the Execute Command panel to export data from FLUENT to Tecplot. In particular, how to specify all zones and several scalars.<br>To produce a tecplot file named...

MixSim1.7 - Launching the solver (FLUENT 4) doesn't work any more since FLUENT 6 has been installed.


By installing FLUENT 6 in the same installation directory (.../Fluent.Inc) where MixSim1.7 (including FLUENT 4.5) resides, a new start-up script (.../Fluent.Inc/bin/fluent) is installed, which...

FLUENT 6 - parallel on Windows (NT/2000) with interpreted UDF


1FLUENT 6 (6.0.12) is run on a cluster of Winodws NT or Windows 2000 machines in parallel.<br>An interpreted UDF (user defined function) is to be used, which may cause...

FLUENT 6.0 - TUI command /define/boundary-conditions/copy-bc doesn't work!


It simply breaks with an error:<br><br>/define/boundary-conditions> copy<br>Copy from: [] links<br><br>Error: eval: unbound variable<br>Error Object:...

TGrid-FLUENT - How to transition from hexes to tets without pyramids ('integral face match')


Typically, pyramids are used to transition from hex cells to tet cells. In some cases, small clearances make the introduction of an additional pyramidal 'layer' troublesome. An...

FLUENT 6 - How to find out which interior zone corresponds to a given fluid zone


In a complicated model, to find out which default interior corresponds to a given fluid zone may take some time. It can be done through visual inspection or through changing the default interiors...

/path/Fluent.Inc/fluent6.0/irix6r10" directory does not exist.


<br>Open up a Terminal Window<br><br>Type: set (to see if the FLUENT_ARCH variable is set)<br><br>If it is set then type: unsetenv FLUENT_ARCH (to unset the...

FLUENT 6 - Cannot use interpreted UDF for a loop over all faces of a cell: "non-integer subscript expression: unsigned char."


Some UDF macros cannot be used in interpreted User Defined Functions.<br>When reading the source into FLUENT, the following error message appears:<br> non-integer subscript...