How to modify the interfacial reflectivity at semi-transparent walls for DO model |
When using the discrete ordinates (DO) radiation model, there are situations when an user wants to modify the interfacial reflectivity at diffusely reflecting semi-transparent walls computed by... |
computing the total dpm mass in a selected fluid volume. |
<br>Client is interested to see the mass of particles in each of the three tanks after a certain time.<br>As he has 3 different fluid zone the default dpm summary is not giving the... |
slip velocity of particle in dpm model |
Client is interested to compute the slip velocity of the particles in dpm model.<br>Say for example in any internal surface (through which particles are passing)<br>client wants to... |
Helping energy convergence with conjugate heat transfer and tet mesh |
For conjugate heat transfer problems with tetrahedral mesh, and especially with widely varying thermal conductivities, sometimes the energy equation<br>is difficult to converge at the start... |
How to interpret radiation flux report at external semi-transparent boundary of solid cell zone in Fluent 6.1 |
In applications which involve modeling solar radiation through windows using the non-gray DO model it is often desirable to model the window as a solid cell zone that participates in radiation. ... |
A workaround for bad syntax error when importing in Fluent from File > Import |
If, when importing a mesh into FLUENT through File > Import in the GUI, an error message similar to the following appears:<br><br>Reading "| utility fe2ram -tANSYS -d3... |
How to create a helical edge in GAMBIT? |
> Would you describe a general strategy for constructing and meshing a 3-d helical rod (like a spring) in Gambit?<br><br>Create a vertex<br>Create a face for helical tube... |
Scheme flunction to create log file for Fluent usage |
Often at the end of a FLUENT run we find it desirable if information for the run is available in the form of a log file which can be accessed later to give information about the case. Details such... |
UDF for profile transfer (velocity, temperature, species.......etc) across a non-conformal interface which seprates volumes of different mesh size |
<br>This is a problem which we often come across. Many times it happens that in some volumes we need finer mesh resolution while on others we need very coarse mesh. This leads to... |
FLUENT 6 - A Workaround for Creating Non-Conformal Interfaces |
There are times when the creation of grid interfaces (non-conformal) will fail. There are a couple easy workarounds (see other Solutions). If everything else fails, try this one.<br>If... |
How to extract results from a previous simulation and use them as BCs? |
<br><br><br>Question: Fluent simulation of a system of components was performed.<br>How do I extract the results on certain interior zones and apply<br>them as BCs... |
Sat file (exported from the same gambit session) is giving FATAL exception during IMPORT. |
There are some volumes in the present database that are not getting deleted. Invoking a delete command for the volumes under group "JUNK" gives a FATAL exception. ALL the volumes... |
Guidelines for setting defaults in the Template creation. |
Converting an older journal file (created with Gambit2.1.0) to work with the current version.<br><br>The Boolean method has been changed in the current version. Hence to minimize the... |
How to start V2F turbulence model |
Fluent 6.1 is equipped with an add-on turbulence model called V2F, which requires an additional license feature to activate. The V2F model is not available through either GUI or TUI... |
Calculating spray statistics for steady and unsteady particle tracking |
This resolution contains information on calculating spray statistics with steady and unsteady particle tracking.<br>There are two methods that FLUENT uses to track particles (or droplets)... |
Batch run on MS DOS |
Command to run Fluent in batch mode at a particular time on a windows machine<br>Following command can be used to run Fluent in batch mode in a Windows machine:<br>fluent 3d -i... |
How to put different titles in plots in FIPOST? |
I would like to put more descriptive titles in plots printed from FIPOST. How can I do that?<br>To print different titles on the plots, please issue the following commands in FIPOST (you can... |
wall functions implementation for turbulent flows |
Are the wall functions correlations being applied only in the first cells from the wall?<br>What about the rest of cells in the boundary layer region?<br><br>The wall functions... |
Can you show me how to use LASTID functionality in GAMBIT? |
The user wrote:<br><br>after I write down the expression<br><br>$X = LASTID(t_fa)<br><br>then can I go and do something else like sweep... |
POLYFLOW - trouble with the rate of deformation tensor (D11+D22 does not vanish) |
When running a 2D (or 3D) incompressible fluid flow case with POLYFLOW, it can be apparently found that the trace of the rate of deformation tensor (the sum of the diagonal components) does not... |
Error: domain-thread-integrals: invalid thread |
Error might be encountered when a zone defined in one of the monitors doesn't exist. For instance, say a surface monitor is defined with an interior surface . Later on the interior surface... |
Fluent 6.1.22: Deforming (MDM) and sliding (SMM) mesh exhibiting rotation |
A piston pump shown in attachment <a target=_blank... |
Software installer on PC - recursive warning when the C drive is full |
On a PC, warnings are recursively generated when the C drive is full, even if the installation is ordered on another drive.<br>The installer does not explicitely use anything in C: if the... |
Retriangulation of interior zone |
There might be instances when interior surface in TGRID isn't retriangulated when prisms are grown from an adjacent surface to it. Please find a gif file(pipe.gif) at following link which... |
reread grid |
Some users wonder if they can use the re-read grid option or a substitute of it that was available in version 5. In 6.1, the option has been removed from the TUI.<br>To use the reread grid... |