POLYMAN - Path for reading .mat file located in Material data file directory does not seem appropriate |
A simulation is created in POLYMAN environment, and a material data file previously saved from POLYMAT is copied into the "Material data file" directory of the current simulation. ... |
MixSim 2.1: transient / sliding mesh model: Error: open_udf_library: The system cannot find the path specified. |
A model file is loaded that involves a transient / sliding mesh analysis.<br>At the attempt to run the solver, an error message appears:<br>Error: open_udf_library: The system cannot... |
FLUENT V6.2 & 6.3 - Writing out variable data into a file in ASCII format from the parallel version |
FLUENT doesn't give option to write out file in ASCII format when using the parallel version<br>A UDF is written to export FLUENT variable data in ASCII format from FLUENT... |
FLUENT V6 - UDF for accessing field variables at the nodes of a face thread |
It is sometimes necessary to retrieve the values of specific variables at the nodes of your mesh. This could be done by looping over cells/faces and accessing the interpolated data at the... |
POLYFLOW - Pressure build up across a section of twin screw extruder |
For the analysis of flow around screws with the use of the MST algorithm, it is often recommended to select fn=fs=0 as boundary conditions at the inlet and outlet. Does this mean that pressure... |
POLYFLOW - Interpretation of streamlines when they do not match the velocity field |
A 2D calculation is run, and the result show wrong patterns for the stream function. What is happening?<br><br>The velocity vector plot should be trusted if the calculation has... |
POLYDATA - What are those fields with strange names, such as YOU0000000002__1, or LAM0000000003__1? |
At the end of a POLYDATA session, the program lists the fields for possible output. Some fields have a strange name, such as YOU0000000002__1, or LAM0000000003__1. What are they?<br>These... |
GAMBIT - POLYDATA - Creation of an external PMESH of dimension N-1 |
When creating an external PMESH in GAMBIT, I may get troubles in using it in POLYDATA. For example, it is merged with another boundary, or it is ignored... What can be done?<br>An... |
MixSim V2 - Cannot mesh in MixSim 2.0 after installing MixSim 2.1 -- MixSim fails with "undefined read macro" error on lnx86 |
MixSim_2.0 produces an "undefined read macro" error at some point during meshing (may occur in other situations as well) after MixSim_2.1 was installed in the same... |
MixSim V2.1 - Modeling solids suspension |
The user wants to calculate just suspended velocity using Mixsim. I coudlnt find out any reference regarding that calculation in the guide. Also the user wants to know how the beads would move in... |
MixSim 2.1 - meshing failure |
When MixSim 2.1 fails to generate a mesh, several things can be done to help it.<br>Meshing failures can look different:<br>- A messagse appears telling that meshing failed for a... |
MixSim 2 - Mesh generation fails for impellers close to each other or to other tank internals |
When the gap between bade and baffle tip, or between impellers is small, MixSim sometimes seems to be confused on where to put the MRF zone and, subsequently, the mesh can not been successfully... |
FloWizard - Units in Solidworks |
It is been found that the units of the geometry created in Solidworks are not maintained. This can lead to larger sized geometries if this file is imported into FloWizard.<br>The *.X_T files... |
FLUENT 6 - How to add C++ object files in UDF |
The procedure to add pre-compiled object files in UDFs is given in the UDF manual but it requires a few more instructions in order to add C++ functions in the UDF. Here is the procedure to add... |
FLUENT V6 - Under what conditions can flow over a sphere be modeled as axisymmetric? |
Up to what Reynolds number can the flow over a sphere be modeled as axisymmetric?<br>Studies have shown that for Re < 20 (Re based on sphere diameter), there is no separation and the... |
POLYFLOW - Trajectories for a transient flow in a deforming domain? |
How can one obtain and display particle trajectories for a time-dependent flow calculated on a deforming domain? A typical situation of relevance can be found e.g. for the flow around a rotating... |
POLYFLOW - Error message 'Blocs exhausted. NBLOCS > 20000 in the .p3rc file'. What is happening? |
A POLYFLOW simulation crashes and an error message is generated from the Expert System, as indicated below. What can be done?<br><br>* Expert tool diagnostics *<br> Blocs... |
POLYFLOW - Use of Polymat to fit a visco-elastic equation in the absence of G', G" data |
Is it possible for POLYMAT to identiry the parameters of a viscoelastic model without the G' and G" data, by using the viscosity and transient extension data curves only? It seems... |
MixSim 2.1: Thin inlets and outlets (attached to the tank, not protruding into it) break meshing |
A thin, rather long inlet of outlet tube is attached to the tank (with the option "Protrude into Tank" INactive).<br>Meshing fails. Investigation shows a corrupt mesh for the... |
MixSim 2.1: Create a new model: "Error: sopenoutputfile: unable to open file", no Cylindrical Tank object |
In MixSim 2.1.10, at the time when the user selects "File -- New Model", an error message appears:<br><br>Error: sopenoutputfile: unable to open file for... |
FLUENT 6 - Tips to accelerate convergence of low Reynolds number flow calculations that include surface reactions |
Simulations with surface reactions and very low Reynolds numbers may take many iterations to reaching convergence. Is it possible to accelerate the solution?<br>The slow convergence is due... |
FLUENT V6 - User-defined Function (UDF) to export Discrete Phase Model (DPM) particle properties to a file |
Although FLUENT provides a method of sampling DPM particles as they pass through planes and outlets, there is no simple way to export particle data for all of the particles in the domain. This is... |
MixSim 2.1 installation: tells the user to install FLUENT 6.2 documentation CD -- no longer required |
When MixSim 2.1 is installed, the installer program tells the user that both a MixSim 2.1 documentation CD/package and a FLUENT 6.2 documentation CD/package should be installed. This is not... |
MixSim 2.1.10: custom impeller missing free floating face from ACIS file |
In a Custom impeller (defined by an ACIS file), the impeller blades are not attached to the hub, i.e. they are "free floating in space".<br>A blade gets lost from the geometry... |
MixSim 2.1.10: Preparation of preview graphics for custom impeller / baffle fails -- meshing fails, too. |
Before the preparation of the preview graphics, the model file was saved to a directory in UNC notation, i.e. beginning with "serversharepath... " rather than... |