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Can a user start multiple pvm daemons per user and machine, e.g. 4 processor machine with 2 parallel jobs of the same user.


<br><br>A new feature in PVM 3.4.4 is the concept of a "Virtual Machine ID". You can now set the PVM_VMID environment variable to an arbitrary string (or use...

SYMPTOM:
When a user FORTRAN program calls the routine USER_ASSEMBLE_INFO, the solver crashes.

PROBLEM:
The argument lists in this routine are not being properly process and the routine will always return the error code `SOME' and all return arguments will be blank.


WORKAROUND:<br>No workaround is current available.<br><br>FIXED IN:<br>ANSYS CFX Release 11.0 Service Pack 1.

I have been using the "Run the ANSYS Borrow Utility" option on the ANSYS License Manager (version 11) but cannot see a way to borrow a parallel processing capability. I have a dual core laptop and would like to be able to use both cores for processing.

Is there an option that I should specify in the license manager or is borrowing a parallel processing capability not possible?


Unfortunately it is not yet possible to borrow licenses for the parallel processing capability. It is hoped this will be available in release 12.<br>You will notice that in your license file...

Customer can run RSM if the files reside locally on his machine and send the solve to a Windows XP X64 box. His client machine is a 32 bit machine. They need to have all models on a centralized server V: drive.

When they run WB 11.0 using the files from that mapped drive, it creates the files but it does not seem to be able to send the file over the network to the solving machine.

Is this supported?


The RSM services run as System which can¿t access the network. The workaround is to change the Solve Process Setting to Remote instead with the Solve Manager machine set to the local...

I am getting the following error message from the License Manager at 11.0:
Unable to checkout `ANSYS Dynamics' license:
Product: ANSYS Dynamics (feature 'dynamics')


ANSYS 11.0 License Manager Error Notice:<br><br>Several reports of a license manager error have been received recently, typically containing text similar to:<br><br>Unable...


In some cases it is desirable turn off the boundary markers in CFX-Pre, particularly when there are a large number of surfaces in the underlying geometry, as this can lead to the display being swamped by a mass of markers. How can this be done in CFX-Pre 11.0?


<br>It is first necessary to select the 'Label and Marker Visibility' icon in CFX-Pre. Since the location of this icon is not immediately obvious, the attached screenshot shows...



As well as for traditional post-processing tasks, CFX-Post is very useful for viewing meshes. Certain file types can be loaded directly into CFX-Post (.def, .gtm, .cgns), but what about the others?


<br><br>Of course CFX-Pre can be used to import the mesh and generate a .def file, but this is overkill, especially if the process is to be repeated many times.<br><br>If...

As of May 31, 2007, Customers have been receiving an error concenring the checkout of 'ANSYS Rigid Dynamics' License.

Simulation always attempts to check out a Rigid Dynamics license as soon as you add an Analysis Type (with a Structural or higher license),
regardless of whether or not you actually require a Rigid Dynamics license.

You will then see one of the following behaviors:

1. If you do not have Rigid Dynamics licenses, you would see a single message, such as 'No such feature exists' or similar.
To continue, simply click OK on the message dialog box and continue your simulation as usual.

2. If you do have Rigid Dynamics licenses, you would see nothing out of the ordinary until all of the Rigid Dynamics licenses were taken.
Then, you would begin to see messages such as 'Licensed number of users already reached' or similar each time you interacted with
the GUI (such as a right-mouse click, menu selection, etc.), regardless of whether your analysis requires a Rigid Dynamics license.

What is causing this and is there a fix for this?


The license manager looks for a license of Rigid Dynamics, whether the actions of the user require the license or not, and this is a license manager error.<br><br> A Service Pack...

Question:

I have a question about output for Gurson's model. Can ANSYS output below results?

1. Void volume fraction
2. Void volume fraction due to void growth
3. Void volume fraction due to void nucleation

Answer:

Apparently we forgot to document the porosity output for the Gurson model. From what I can tell in the coding, the following should be including for all POST1 and POST26 output options:
Item Component Description
DPAR TPOR Volume fraction of porosity
GPOR Volume fraction due to growth
NPOR Volume fraction due to nucleation

This information should be available for Release 12.0


Question:<br><br>I have a question about output for Gurson's model. Can ANSYS output below results?<br><br>1. Void volume fraction<br>2. Void volume fraction...

ANSYS Workbench Service Pack 2007-SV16 for Rigid Dynamics Licensing

This service pack corrects a Rigid Dynamics licensing problem with Simulation that started appearing after May 31, 2007.

At Release 11.0 of ANSYS Workbench, Simulation always attempts to check out a Rigid Dynamics license as soon as you add an Analysis Type (with a Structural or higher license), regardless of whether or not you actually require a Rigid Dynamics license. You will then see one of the following behaviors:

If you do not have Rigid Dynamics licenses, you would see a single message, such as 'No such feature exists' or similar. To continue, simply click OK on the message dialog box and continue your simulation as usual.

If you do have Rigid Dynamics licenses, you would see nothing out of the ordinary until all of the Rigid Dynamics licenses were taken. Then, you would begin to see messages such as 'Licensed number of users already reached' or similar each time you interacted with the GUI (such as a right-mouse click, menu selection, etc.), regardless of whether your analysis requires a Rigid Dynamics license.

This service pack corrects this problem. To install the service pack, follow these steps:


1. Shut down any running ANSYS Workbench sessions.
2.Log in to the ANSYS Customer Portal at www.ansys.com/customer.
3. Select Get Software from the list at the left.
4. Click Software Download.
5. Scroll down to the Product Updates section and click the + sign next to ANSYS Workbench Service Pack 2007-SV16 to expand the selection.
6. Choose one or more operating systems of interest and then click the Proceed to Download Summary button.
7. Click on the link or links shown above in blue text, and your download should look similar to the one shown below: (Windows 32 bit shown being downloaded via a Windows XP OS machine).
8. Extract the file(s)

DSObjectsU.dll on the Windows platforms
or
libdsobjects.so and dsobjects.rsb on UNIX

from the zip or tar


ANSYS Workbench Service Pack 2007-SV16 for Rigid Dynamics Licensing<br><br>This service pack corrects a Rigid Dynamics licensing problem with Simulation that started appearing after...



I am running a problem with surface tension for an axisymmetric geometry in CFX 11.0. I have constructed a thin wedge
to represent this geometry with symmetry planes which meet at the axis. When I look at my results, I see
a different shape for the free surface at the axis than I would expect. What might be causing this?


<br><br>This behavior has been observed for some cases. Because the elements at the axis for a thin wedge tend to be<br>quite small, the False Timestep Linearisation that is on...

SYMPTOM:
When a parallel solver run that employs user fortran is started in double precision, the run fails claiming it cannot find the user fortran libraries.

PROBLEM:
This problem arises because the single precision partitioner is used by default, even when the solver is run in double precision mode. This looks in the single precision directories for any librararies that it needs (e.g. Junction Box Routines for partitioning), and thus fails if it cannot find them.


WORKAROUND:<br>Compile the single precision libraries, in additon to the double precision ones, using cfx5mkext.<br><br>Alternatively, you can run the double precision...

Is ANSYS Mechanical (classic ANSYS & Workbench) Windows Vista
compatible? If it is not Vista compatible, when do you expect it to be
Vista compatible?


ANSYS and ANSYS Workbench versions up to 11.0 are not Supported/Compatible with Windows Vista.<br>The first version that will be compatible with Windows Vista will be ANSYS and ANSYS...

SYMPTOM:
When a Definition/Results File containing Monitor Points is opened in CFX Pre 11.0, some of the Monitor Points are not highlighted in the Viewer. Highlighting them causes the following error to be generated:

ERROR
CCL validation failed with message:
Error: The essential parameter 'Option' is missing from /POINT:Point Point 1

PROBLEM:
This is due to a bug in CFX Pre, and can can occur when the file contains Monitor Points defined using both the Coordinate and Expression options.


WORKAROUND:<br>The error can be fixed by visiting the Monitor tab of Output Control, and re-applying the Monitor Point data.<br><br>FIXED IN:<br>ANSYS CFX Release 11.0 Service Pack...

User is attempting to use SynchroMesh in TAS to connect Master and Slave surfaces together for thermal transfer.
The user is not able to get a converged result. It appears as if the nodes are not being connected by SynchroMesh.


In this case, the SynchroMesh Tolerance was not wide enough to connect the surfaces.<br><br>In Settings > General. The synchromesh Tolerance is set to 0.05.<br>If you...

How can a user configure RSM in order to use multiple Ansys solver licenses simultaneously

- User has a large Compute server machine, many processors, etc.
- User also has 5 Ansys licenses available for solving
- User wants to be able to use all 5 licenses simultaneously
- User creates say 5 different RSM Queues, all pointing to same large Compute server machine.
- It would seem as if RSM should be able to use all 5 queues, and therefore use all 5 licenses simultaneously
- According to the user, this does not happen, as RSM seems to wait until previous license is available.

Is there any way to configure RSM so that they could use all 5 licenses simultaneously.


In this scenario you don't create multiple Queues. but you instead create multiple compute servers (virtual) pointing to the same physical machine.<br>All users wanting to utilize...

I want to test the Tgrid meshing option in ICEM CFD 11. When running the mesher, a surface mesh is created, but when the volume mesher is about to start, the following error message appears:

Tk Error
An internal error has occurred:
Can't find program "tgrid" in directories: icemcfd {C:/Program Files/ANSYS Inc/v110/icemcfd/win64_amd/icemcfd}{C:/Program Files/ANSYS Inc/v110/icemcfd/win64_amd/icemcfd}

Is this a bug or a setup problem?


The executable tgrid.exe was mistakenly not included in the software for the ICEM CFD 11 installation on Windows XP 64-bit. A similar problem occurred in the IBM (AIX) version of ICEM CFD...

Class 3 Error

SYMPTOM:
The inWg (inches of water) scale for pressure is incorrect, and will give incorrect answers to calculations.

PROBLEM:
The use of the scale relies on a factor converting the pressure into the Solver unit of Pascals. This conversion factor is wrong by approximately a


WORKAROUND:<br>No workaround is current available.<br><br>FIXED IN:<br>ANSYS CFX Release 11.0 Service Pack 1.

Class 3 Error

SYMPTOM:
When using the surface-to-surface radiation model with the multi-band option, heat energy is incorrectly transferred to the interior of the domain.

PROBLEM:
This is due to incorrect coding in th


WORKAROUND:<br>The workaround is to use the standard participating media radiation model, with a small volume absorptivity, if the multi-band option is needed.<br><br>FIXED...

How to obtain the HostID for a computer which has more than one Ethernet card? Linux configures the Ethernet card on startup and uses a random card as eth0 or eth1. But the FlexLM license manager will always take the Ethernet card configured as eth0.


The configuration can be defined, but the approaches are different for SuSE or RedHat:<br><br>SuSE:<br>For network configuration SuSE Linux generates the following...

When using an Academic Teaching Introductory license in ANSYS 11.0, I receive an error when I try to use the TBFT command. Since Academic Teaching Introductory should have the same capabilities as Multphysics, is this a defect?


Yes, it was found that there were some commands left out of the Academic Teaching Introductory license capabilities:<br><br><br>The commands are as follows:<br>¿ ...

What if no tetra, hexa or other meshing license is found when using academic licensing?


Change the Settings > Product to "Default." Academic licensing will not recognize the "Full CFD" or "ANSYS Solvers" product...



I have a structural problem that I want to run which involves a beam that is deflected by stresses unrelated
to fluid forces. To get this deflection, I am going to solve a steady-state structural problem in ANSYS.

I would then like to do a standalone CFD simulation for flow around the beam.

What is the best way to get the mesh for the deformed beam into the
CFD calculation?


<br><br>With an MFX license, you can set this up as a 2-way FSI problem.<br><br>Set up your ANSYS structural analysis as usual. Just remember to put<br>a Fluid-Solid...

Question:

Why is the results file larger when running with >1 processors. Can you provide any info?


Answer:

To understand why results files are larger when multiple processors are used, it is best to start with the description of how the results file is created when a single processor is used. The results file is written as a random access file meaning that any point along the file can be written or read at any time. But the file is actually written sequentially in that ANSYS starts at the beginning of the file and adds records at the next available point on the file. ANSYS uses routine BIOWRT8 (or BINWRT8 for user created files) to process the data and one of the arguments, LOC, is the starting location of that record on the file. The routines that actually interface with the file will then return to BIOWRT8 the location of the NEXT random access location in argument LOC and the program uses that value the next time BIOWRT8 is called. Included in these random access records are pointer records that contain the location along the file where specific information may be found such as the pointers to the load step headers, or the pointers to the individual records. Details of the structure of the results file may be found the Programmer's Manual. So, ANSYS will open the results file and begin by writing the Binary File Header Record (100 integers long) which will contain information about the binary file (type of binary file, length, date, time, Release Number, etc). This will be followed by the Results File Header Record (40 integers long) which will contain model information (number of nodes, number of elements, number of results, etc) and the pointers to the other information on the file (pointer to the result data sets, pointer to the geometry header, etc). At this point, most of the integers in the Results File Header Record are zero and the record is written to hold the place of the Results File Header Record on the file. ANSYS will t


Question:<br><br>Why is the results file larger when running with >1 processors. Can you provide any info?<br><br><br>Answer:<br><br>To understand...

I understand there is an initial design tool available within BladeModeler. How can I access this?


This tool is the Vista-Code from PCA Engineers. It is available with BladeGen Version 11 by default, e.g. no extra cost.<br>A license key is not required.<br><br>You start it in...