What is the allowable number of MFS field interfaces? |
In ANSYS Multiphysics Release 11.0, the maximum number MFS field interfaces is 50. Enhancement request 57664 recommends increasing that limit to at least 100.
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Are there any examples of using a 2D table array to define the TCC real constant? |
Yes, please see the attached ANSYS 11.0 transient heat transfer input file.<br><br>The model consists of two SOLID70 blocks separated by a small gap. Heat passes<br>through the... |
Evaluating mass flow on an internal mesh region may result in a much too small value? |
The sign of the massflow on a mesh face is defined by the face normal. When the face normals are misoriented then the integral value of the massflows will show a wrong value. Please visualize the... |
When I try to start Workbench 11 on a Linux 32-bit RedHat Enterprise 3 platform I get the following in a pop-up:
SDK Load Library Failed
The specified module could not be found
What is causing this? |
It is likely that you still have a pre-release of the version 11 Workbench, ICEM CFD or CFX software installed. Remove any pre-releases and try Workbench again; it should now start with no problems.
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What is the frame of reference assumed for particles injected using Particle Injection Regions? |
Velocities for particles injected using Particle Injection Regions are assumed to be specified in the absolute frame.<br>The position from which they are injected is assumed to rotate along... |
Are there any ANSYS LS-DYNA examples limiting Automatic General (AG) contact to a portion of the model? |
Yes, please see the ANSYS LS-DYNA 11.0 example that is attached to this record.<br><br>Although there is no Classic GUI support for this capability, you can create a part assembly of... |
Workbench 10.0 works fine. Workbench 11.0 crashes when moving between modules. What causes this? |
Tried turning down the ¿accelerator¿ settings for the graphics driver, and the crashing trouble apparently stopped.<br><br>The laptop is an IBM Thinkpad R51 laptop (now... |
Class 3 Error
SYMPTOM:
For turbulent flows using total energy including viscous work, the viscous work double accounts for the contribution of the normal turbulent stress (2/3*rho*k) for two equation models (including EARSM), and fails to remove the isotropic normal stress (2/3*rho*k) for Reynolds stress models.
PROBLEM:
This is due to incorrect coding of the visco |
WORKAROUND:<br>No workaround is currently available.<br><br>FIXED IN:<br>ANSYS CFX 11.0 Update 1
|
Class 3 Error
SYMPTOM:
The wall shear stress for the solid phase of a fluidized bed modelled as a laminar flow is incorrect when using the kinetic theory model.
PROBLEM:
This is due to omission of the contribution to the stress from the solids shear and bulk |
WORKAROUND:<br>No workaround is currently available.<br><br>FIXED IN:<br>ANSYS CFX Release 12.0.
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Class 3 Error
SYMPTOM:
The solids shear and bulk viscosity terms in the momentum equations are incorrect when using the kinetic theory model.
PROBLEM:
This is due to the code adding these model terms, which include a volume fraction effect, prior to a generic volume fraction weighting step. This means the terms are too small by a factor of vol |
WORKAROUND:<br>No workaround is currently available.<br><br>FIXED IN:<br>ANSYS CFX 11.0 Update 1
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User is attempting to bring seam weld information via two point bar elements directly from ProE into Workbench. Is this capability available? |
No capability currently exists in Version 11, but it is in the works. The work around is to build curves representing the bar elements, import them into ICEM CFD and use the Mesh Curve function... |
Customer clicks on the download link for ANSYS 11.0 products and it opens up the download box. There is no option to save the file. As soon as the download is complete, the box disappears, and an empty WinZip window appears. There is no trace of the file in any of the Temp folders.
Why is he not able to download the files? |
In this case the customer had to do the following:<br><br><br>1. Click Start, point to Settings, and then click Control Panel.<br>2. Double-click Folder... |
ANSYS LS-DYNA PC 11.0 does not allow me to define material properties. Why? |
This is a known error (Defect 57721) and is currently being investigated.<br> ANSYS LS-DYNA 11.0 product codes "dyna" (ANSYS LS-DYNA standalone),<br> ... |
I am running a Lagrangian particle tracking case with and without the turbulence dispersion model activated. The particles don't disperse more when turbulence dispersion is activated.
There's practically no difference at all, even though analytically we know that the particles should be moving around all over the place. What is going on? |
<br><br>Turbulence dispersion turns itself off if the flow is not deemed to be sufficiently turbulent. In CFX 11.0, there is a check if the flow is locally turbulent (eddy viscosity... |
How to visualize mesh quality in CFX-Post in order to find critical mesh regions, e.g. where no convergence is obtained? |
The location of maximum or minimum residual can be shown by creating a point-locator with the option ¿from variable maximum¿ or ¿¿minimum¿ and selecting a... |
When I try to run a "simple restart" in ANSYS LS-DYNA 10.0 from the Launcher, I get:
*** ERROR NCPU 1 doesn't match NCPU in the last run 0 Why? |
A search of our error database did not yield any result, but the error was reproduced<br> in ANSYS LS-DYNA 10.0 using the Launcher. However, the error is fixed in 11.0. A<br> ... |
SYMPTOM:
When running the CFX Solver in PVM distributed parallel mode, and a Windows 64bit machine is used as a slave, the run fails with an error message similar to the following:
+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| The solver executable D:Ansys |
| Incv110CFXbinwinntsolver-pvm.exe on host twin64 could not be |
| found, or is not readable. Check that the executable is readable |
| by the user running the rsh service. |
+--------------------------------------------------------------------+
PROBLEM:
There are two problems associated with using Windows 64 machines as slaves in a PVM distributed parallel run.
The first is due to an errror in the machine type returned by the slave machine leading to the above error message. If the platform for the host is not explicitly set in the hosts.ccl file, the slave incorrectly reports the machine type as Windows32 and the job fails as a result. To correct this simply add the relevant details to the hosts.ccl file.
However, even with this correction, subsequent jobs may still fail with the following error message:
+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| Unable to start the PVM daemon on host twin64. This may indicate |
| that the PVM daemon is already running on that host, or that it |
| left files in /tmp on that host because it did not exit cleanly |
| last time it was run. |
+--------------------------------------------------------------------+ |
WORKAROUND:<br>No workaround is currently available.<br><br>FIXED IN:<br>ANSYS CFX Release 11.0Service Pack 1.
|
After successfully configuring PuTTy as described in the help, the user was not able to successfully run the Test Server script using PSSH.
The Proxy server is a SGI PRISM machine (SGI ProPack 4SP3 for Linux, Build 403r1-0512182217) 2.6.5-7.282-rtgfx #1 ia64 GNU/Linux.
His client machine is a Windows XP Professional SP2.
Why does he receive the following errors when trying to run the "Test Server" in RSM 11.0?
=== End output from script === (2007-02-26 14:53:16)
Connectivity test successful. (2007-02-26 14:53:16)
Creating temporary directory: /home/roi/nbtvtouj.mhy/ (2007-02-26 14:53:16)
Directory created. (2007-02-26 14:53:17)
Sending file test.in on GAUSS to /home/roi/nbtvtouj.mhy/test.in on 192.168.0.30... (2007-02-26 14:53:17)
test.in | 0 kB | 0.0 kB/s | ET |
00:00:00 | 100% (2007-02-26 14:53:18)<br> top: bad delay '1532' (2007-02-26 14:53:23)<br>test.in| 0 kB | 0.0 kB/s | ETA: 00:00:00 | 100% (2007-02-26... |
Class 3 Error
SYMPTOM:
Results may be incorrect when the high resolution advection scheme is used for the Reynolds stress equations.
PROBLEM:
The calculation of "beta" values for the high resolution scheme for the Reynolds stress equations will be incorrect if the high resolution scheme is also activated for the epsilon or omega equation classes. Note that all turbulence equations use the first order upwind advection scheme (regardless of the general advection scheme setting) unless this is explicitly overridden using the Equation Class settings for turbulence, so the defect will only affect cases which have advection scheme settings on an equation |
WORKAROUND:<br>Avoid using the high resolution advection scheme for both Reynolds stress and epsilon/omega equations.<br><br>FIXED IN:<br>ANSYS CFX 11.0 Update 1.
|
Class 3 Error
SYMPTOM:
1D interpolation used to define profile expressions may give incorrect results.
PROBLEM:
When the relevant expression is evaluated, the interpolation algorithm uses a binary search that assumes that the interpolation data has been sorted.
If the 1D data is defined via the User Function panel in CFX-Pre, it will be sorted correctly.
If the 1D data is defined via a profile file, then it will also be sorted correctly.
However, if the User Function CCL was created or edited manually (outside CFX-Pre), then the interpolation data will not be sorted, and interpolation may run and give incorrect answers without report |
WORKAROUND:<br>Use CFX-Pre to create User Function data, or ensure that the data is correctly sorted when manually editing the CCL.<br><br>FIXED IN:<br>ANSYS CFX 11.0 Update 1.
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How do you remove the ANSYS logo from the ANSYS Workbench Window background? |
In V11.0, to remove the background "ANSYS" watermark image from the upper right-hand corner of the graphics area,<br> you must replace the image file with a 1x1 single pixel... |
CFX-Mesh fails. This problem has been encountered when attempting to create an inflated mesh with the default virtual topology creation. Error messages of the type shown below are typical
Internal Error
The volume mesher is unable to create a new point for this face. The front is most likely corrupted. Check the validity of the surface mesh. If it is valid, a possible workaround is to reduce the mesh spacing slightly and re-mesh.
Warning
Errors detected calculating edge table from surface mesh. Faces in surface mesh have inconsistent orientation. Offending faces flipped to allow execution to proceed.
Number of faces flipped = 74 |
<br><br>As a workaround, try clearing (i.e. deleting) the default virtual topology and creating virtual surfaces manually only where they are required. It seems that the generation of... |
How can I retrieve the BFUNIF setting into a parameter? |
Use the *get,tval,common, ,bfcom, ,real,1 command however,<br>note that it is undocumented.
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I have installed ICEM CFD 11 on my Windows XP 64-bit platform. When I select File > Results > Open Results on the ICEM CFD 11 GUI I get the following message:
**********************
Error
An internal error has occurred:
invalid command name "V3_setup_cmd"
You can report the error to the maintainers of this software, skip the
error and continue working, or view a stack trace.
************************ |
Windows XP 64-bit is a new platform for ICEM CFD at release 11. We do not have the v3p and pvm3 libraries needed for post-processing on Windows XP 64-bit and as a result, post-processing does not... |
Does ANSYS FLEXlm License Manager work on Microsoft Virtual Server 2005? |
We have not tested this here at ANSYS, but we have no reason to believe it won't work.<br>If it is a "Windows OS" and is either "32-bit" or... |