Can't fix the temperature in a solid using Fluent6.0.20 via GUI or TUI |
The fixed option in BC panel for solid in v6.0.20 is not functional. This is fixed in fluent6.1.x. How to specify fixed option in fluent6.0.20?<br>1. turn on energy<br>2. change type... |
Entire fan udf in c program |
2The user defined fan udf has a part of the code in fortran77 and the remaining part in c language.The entire code has been changed into c language.<br>Following are the steps to be... |
floating point error when reading pdf file |
*.pdf is generated on one platform. When trying to read the file onto another platform, floating point error generated.<br>Prepdf binary files are not compatable across platforms. If a... |
UDF for Herschel-Bulkley viscosity with spatial dependence. |
Spatial dependence to Herschel-Bulkley viscosity model<br><br>Spatial dependency needs to be added by user... very straighforward to implement.<br>#include... |
Extract pressure and velocity magnitude from point data from input file |
Given set of point data (x,y,z), extract the pressure or velocity magnitudes and print them to file.<br>A UDF was created for this purpose. Contact ww to obtain the files and an... |
How to include strain rate in UDF |
How to use strain rate in UDF.... for example,<br><br>viscosity in Herschel-Bulkley model...<br><br>Include "mem.h" in your UDF<br><br>Call... |
Report Averages on a Number of Surfaces |
When creating surface average reports the number of surfaces requested will depend upon the number used in the previous report. For example, if a report is created using 5 surfaces then these... |
emergency recovery of data files |
Somtetimes, in the end of long run, FLUENT may fail to write the data file and give a "malloc" error. This can be due if, for example, one uses UDF and small "memory... |
Renaming of zones which start with a specified string |
There might be a need for changing the name of a zone which starts with a particular string for eg to control zone names generated automatically by Fluent when executing some commands such as... |
defining heat transfer coefficient (HTC) |
<br><br>The heat transfer coefficient is a characteristic of the flow. It is used to<br>measure the ability of a flow to convect energy from walls.... |
FLPOST - graphical display on SGI platform |
When running FLPOST on SGI platforms, it may happen that the the graphical display does not properly work.<br>On such platform, we suggest to try the command : flpost -driver x11 |
Cell type adjacent to two sided wall |
Cell type adjacent to a two sided wall can be found through UDF using macros,THREAD_SHADOW(Thread *t), F_SHADOW(face_t f,Thread *t), FLUID_THREAD_P(t).<br><br>Following is the... |
how to create hanging grid interface? |
Hanging grid interface can be used to enforce connectivity between two different type of meshes, such as hex with tet mesh. As compared with non-confromal grid-interfaces, hanging grid-interface... |
FLPOST : Troubles with OPENGL |
Error message while starting FLPOST : A long message is generated, ending with<br><br>Error message from graphics function Show_Device_Info:<br>The SBX driver needs CMAP_FULL... |
SGI & VMPI: array services not available - what to do? |
Suppose you are trying to run on one or several SGIs in parallel - you launch Fluent but it reports:<br><br>MPI: asgetnetinfo_array('(null)') failed : array services not... |
Using RSF |
Client wanted to know how to use RSF<br><br>Client only has license for<br>GAMBIT and FLUENT -POST<br> Here are the steps to using the RSF:<br><br>1. Create... |
"Product of k" is zero? |
The post-processing for "Production of k" is always zero.<br>For the current version, there is no data for "Production of k" if case and data are just read. The... |
Selection of surface-type through TUI |
Selection of surface type through TUI is very useful especially in cases where there are hundreds of point-surfaces or plane-surfaces.<br>Following three scheme files would allow an user to... |
How to discard highly skewed cells from the mesh |
Sometimes one ends up with a volume mesh that has a few highly skewed cells.<br>If such cells are in an unimportant part of the flow field, it is quicker to discard them<br>(i.e. move... |
Question regarding initializing file for MHD module |
<br>The external magnetic field data format for MAGNA is written in Fluent6 mhd manual.<br>For test, we made the simple file which is formated MAGNA but cannot initialize with this... |
Order in which faces are accessed through begin_f_loop |
In certain types of UDFs, it may be necessary for the faces on a particular zone to be accessed in the same order in the begin_f_loop(face,thread){}end_f_loop(face,thread) loop, no matter where... |
differences between FLUENT 32-bit and 64-bit executables |
It is well-known that the FLUENT 64-bit executable, which can be started by adding -64 the FLUENT command line, e.g. %> fluent 3d -64, is better than the 32-bit executable for problems in... |
Global energy balance for unsteady conduction problem |
It is desired to evaluate the global energy balance for an unsteady conduction problem. This can not be done correctly using only the Flux Reports panel, which only includes surface terms in the... |
DEFINE_PROFILE execution and UDF Profile Update Interval for Unsteady Simulations |
In order to increase computational efficiency, it may be desirable to update boundary profiles that are assigned via UDFs only at the first iteration of each time step. In Fluent 6.0, the... |
Missing files from the Force Monitors Panel |
If files from the Force Monitors Panel appear to be missing after running a case, do not panic.<br>If Fluent is started from Start > Programs > Fluent Inc > Fluent, and... |