KNOWN ISSUE: Callbacks and Additional Variables which are functions of Mesh Displacement may give incorrect results (Class 3 Error) |
SYMPTOM:<br>An Additional Variable which depends on Mesh Displacement may have incorrect hybrid values, which can be seen when viewed in CFD-Post.<br>A callback function which is... |
KNOWN ISSUE: Mass Arrhenius rate option for particles only correct for 1st order reactions (Class 3 Error) |
SYMPTOM:<br>If a particle reaction is used where the order of the reaction is greater than unity, and the Mass Arrhenius option is selected, then the CFX-Solver calculates the wrong reaction... |
KNOWN ISSUE: Boundary mass sources can give incorrect answer for heat transfer and additional variables (Class 3 Error) |
SYMPTOM:<br>If boundary mass (Continuity) sources are used together with either (a) volumetric Additional Variables or (b) heat transfer when the MCF/Energy Sink Option is set to... |
KNOWN ISSUE: Use of predefined numbers in particle user routines for multiphase reactions (Class 3 Error) |
SYMPTOM:<br>If a particle reaction rate is user defined via a user Fortran routine and a predefined number variable, such as 'Particle Slip Velocity' or 'Particle... |
KNOWN ISSUE: Use of particle integration time step in a user defined particle reaction (Class 3 Error) |
SYMPTOM:<br>If the particle reaction rate is user defined via a user Fortran routine and the variable 'Particle Integration Timestep' is passed as an argument to the user... |
KNOWN ISSUE: Mass flow averages of particle variables may give incorrect results (Class 3 Error) |
SYMPTOM:<br>The calculation of mass flow averages of particle variables, such as massFlowAve(Particle.Temperature), in the CFX Solver will in general give incorrect answers, which may not be... |
KNOWN ISSUE: "cfx5parhosts -benchmark" does not work on Windows platforms |
SYMPTOM:<br>Executing the command "cfx5parhosts -benchmark" on a Windows machine results in output similar to the following:<br><br>Running benchmark with 1... |
KNOWN ISSUE: Wall scale problem in parallel when no non-slip walls (Class 3 Error) |
SYMPTOM:<br>If a case with no non-slip walls is run in parallel, then it may incorrectly solve the wall scale equation, and thus corrupt the overall... |
Q: How can you skip the update of a hanging design point? |
A: You should terminate the process AnsysWBU.exe (please note that this is not AnsysFWW.exe). Doing this, you skip the dp in object and you don't have to close Workbench. |
User defined cross section offset is not transferred from DesignModeler (DM) to Mechanical application? |
Set the Analysis Type (in the property list of the Geometry cell) to 3D and then the user defined offsets are transferred correctly.<br>Also, note that in R13, you need to set the Analysis... |
Can I mesh beam geometry, which is created in SolidWorks, in Mechanical using Design Space license? |
You would need DesignModeler DM to apply the cross sections and alignments for the beams. |
I would like to add a pressure inlet to a problem, where the boundary condition pressure is specified as a function of time. This is for a transient internal flow problem.
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Transient Boundary Conditions<br><br>There are two ways you can specify transient boundary conditions:<br><br> 1. transient profile with a format similar to the... |
How to use commands object in Mechanical application to calculate contact pressure x area? |
You can use this command object under Solution. Make sure that contact behavior is set to Asymmetric so results (contact pressure) will report on the contact... |
Error Message: "Could not connect to local server:24800@localhost An operation on a socket could not be performed because the system lacked sufficient buffer space or because queue was full" |
This error is due to anit-virus protection software.<br>Please uninstall Antivirus or exclude the ANSYS Inc folder for scan to resolve this issue. |
POLYFLOW - What can be said about the CEF (Criminale-Ericksen-Filbey) model? |
1. Equation:<br>Let us D and T respectively denote the rate-of-deformation tensor and the extra-stress tensor. The constitutive equation of the CEF fluid model can be written as... |
Q: Can I use FEMGV 7.1 with ASAS 14.04 and if so what license files are needed? |
A: This can be clarified as follows:<br><br>1) If you want to use FEMGV 7.1 with ASAS then you must use ASAS 12.1.<br><br>ASAS 12.1 and FEMGV 7.1 can only use license keys... |
Q: In POLYDATA - How can I define a periodic boundary conditions based on flow rate for viscoelastic flow? |
A: This can be done by editing the data file.<br><br>Remove the SOLVER defined for the calculation of inflow boundary conditions, and add a problem '53' (2D) or... |
Question:
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Answer:<br><br>We have unsteady data which we must average. The question is: what is a good average time? The answer is not that simple! Lets imagine the following: you are tracking,... |
KNOWN ISSUE: Multiphase modelling and GGI interfaces |
SYMPTOM:<br>As documented in the restrictions for multiphase flow calculations, numerical inaccuracies at GGI interfaces for flows including advanced physical models, such as turbulent... |
KNOWN ISSUE:
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SYMPTOM:<br>When multiple results files are loaded, containing the same named particle tracks, colouring of the tracks by a particle track variable can fail, and make particles unusable for... |
KNOWN ISSUE: Restarts from results files with Option set to 'Essential' |
SYMPTOM:<br>The Output Control option 'Essential' for the Results does not guarantee a clean restart.<br><br>PROBLEM:<br>Contrary to what is stated in the... |
KNOWN ISSUE:
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SYMPTOM:<br>When post-processing FLUENT particle tracks, changing the symbol size option to Particle Diameter can crash CFD-Post if the "Particle Diameter" variable is not... |
KNOWN ISSUE: Semi-perfect gas option in Vista CCD |
SYMPTOM:<br>In Vista_CCD, the semi-perfect gas option is disabled.<br><br>PROBLEM:<br>The model fails to work correctly.<br><br>WORKAROUND:<br>If the... |
KNOWN ISSUE: Incompressible fluids and the Total Energy heat transfer option (Class 3 Error) |
SYMPTOM:<br>When using incompressible fluids along with the total energy equation heat transfer model the solver will ignore user specified total pressure at both INLET and OPENING boundary... |
KNOWN ISSUE: Transient multiphase flow with initial smoothing of volume fraction (Class 3 Error) |
SYMPTOM:<br>When doing a transient multiphase simulation in which Initial Volume Fraction Smoothing is active, incorrect answers will be obtained on the first time... |