KNOWN ISSUE: Monitoring using the Cartesian Coordinates option with a specified Domain Name can give incorrect results (Class 3 Error) |
SYMPTOM:<br>A monitor point specified using the "Cartesian Coordinates" option, with a specified Domain Name, appears to give incorrect results, if the coordinates specify a... |
KNOWN ISSUE: Forces transferred to ANSYS in an MFX calculation are wrong if "solve fluids = f" (Class 3 Error) |
SYMPTOM:<br>The forces transferred to ANSYS in an MFX calculation are wrong if the expert parameter "solve fluids = f" is set (to turn off the solution of the mass and momentum... |
KNOWN ISSUE: A steady-state MFX run cannot be restarted as a transient run |
SYMPTOM:<br>A restart of a transient MFX run from a steady-state MFX run does not work correctly.<br><br>PROBLEM:<br>A typical way to do a steady-state MFX run is to run... |
KNOWN ISSUE: Kinetic theory model in multidomain cases (Class 3 Error if it were not mentioned in errata) |
SYMPTOM:<br>When using the kinetic theory model for multiphase granular flows with multidomain problems, the CFX-Solver may stop with a segmentation violation because of a bug discretizing... |
KNOWN ISSUE: Issues with diffusion term in THF transport equation (Class 3 Error in beta feature) |
SYMPTOM:<br>Slightly incorrect solutions will be obtained using the turbulent heat flux model.<br><br>PROBLEM:<br>1) For the THF and HVAR equations, an 'anisotropic... |
Static Structural (ANSYS) and other analyses cannot be linked to the mesh of a Mesh object. Why? |
A mesh object does not include engineering data so it cannot connect to an analysis that requires engineering data. Instead of a mesh object, it needs to be a mechanical model object. You can... |
KNOWN ISSUE: Some reported Average Scales at the end of a run are incorrect (Class 3 Error) |
SYMPTOM:<br>Some quantities reported in the Average Scale section of the CFX-Solver out file at the end of a run are incorrect. In particular, those of Specific Heat Capacity at Constant... |
I am trying to read a CFX-4 grid for a cylindrical geometry which contains cells that touch the r=0 axis into CFX-Pre, but there appears to be a problem
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You can import a CFX-4 geo file which has the r=0 axis included, *but* you have to have this mesh in the proper CFX-4<br>format for such a mesh.<br><br>That format assumes the... |
KNOWN ISSUE: Particle transport and translational periodic boundaries (Class 3 Error) |
SYMPTOM:<br>The behaviour of particles at translational periodic boundaries is unreliable, with occasionally particles stopping at such boundaries or continuing from incorrect positions.... |
KNOWN ISSUE: Problem with energy equation in multiphase, multi-component flow (Class 3 Error) |
SYMPTOM:<br>The predicted temperature field in a multiphase, multi-component flow is incorrect. The errors may be quite large and noticeable, but they are equally likely to be small and not... |
KNOWN ISSUE: Heat Transfer solutions may not be exactly periodic |
SYMPTOM:<br>Heat transfer solutions on wall boundaries that span a periodic section may not be exactly periodic, even if the specified conditions on that boundary are exactly periodic. For... |
I am applying a velocity boundary condition at an inlet from an inlet velocity profile exported from an outlet. I notice that there can be
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To start, you should export the velocities at the outlet as a profile in CFX-Post. Make sure when you do this that you set the<br>variable type to be conservative. This will give the... |
KNOWN ISSUE: A case with mesh motion, GGI interfaces and subdomains may not re-intersect (Class 3 Error) |
SYMPTOM:<br>A case with mesh motion, GGI interfaces and subdomains may produce incorrect results because the re-intersection of some GGI interfaces is not performed every timestep (as it... |
KNOWN ISSUE: massFlowAveAbs callback gets incorrect answer on linux-amd64 (Class 3 Error) |
SYMPTOM:<br>If the massFlowAveAbs callback function is used, such as massFlowAveAbs(Variable)@Locator, in the single precision linux-amd64 version of the CFX-Solver, then incorrect answers... |
I am trying to import an ANSYS Workbench Mesh cmdb file produced on Windows into CFX-Pre on another platform , but it fails and tells me that no mesh - KSVIHLA
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The cmdb file is not universally portable onto different platforms, as the import into CFX-Pre requires certain libraries which are only present if ANSYS<br>Workbench is... |
I am running a Lagrangian particle tracking calculation in ANSYS CFX where the particle is heated by both radiation and convection heat transfer from the continuous phases and would like be able to assess how much of the heat transfer to the particle comes from radiation and how much from convection on a particle by particle
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The output file does provide information on the radiation source to the particle as well as the source to due transfer of energy to the particle from<br>the continuous phase. These are... |
KNOWN ISSUE: Wall Boiling with CHT may converge to incorrect solution (Class 3 Error) |
SYMPTOM:<br>If the Wall Boiling model is enabled in a CHT (Conjugate Heat Transfer) calculation, then the CFX-Solver may converge to a solution which is... |
KNOWN ISSUE: Blockage factor taken into account twice in VistaCCD choke calculation (Class 3 Error) |
SYMPTOM:<br>When using the VistaCCD component of BladeGen, the choke flow calculation of the maximum mass flow, used in calculating how close the annulus is to choke, is incorrect. This will... |
KNOWN ISSUE: The CFX-Solver may report the wrong reason for stopping |
SYMPTOM:<br>In cases where a Termination Condition has been used to stop the CFX-Solver, the CFX-Solver may stop with an inconsistent message. For example, it may report that the Run... |
KNOWN ISSUE: nint and int CEL functions only work correctly for dimensionless arguments (Class 3 Error) |
SYMPTOM:<br>If the int and nint functions are used for dimensional arguments, then incorrect answers may be obtained. These errors may be large and noticeable, but may just as easily be... |
KNOWN ISSUE: Curvature correction implementation incorrect for two-equation turbulence models (Class 3 Error) |
SYMPTOM:<br>The implementation of the curvature correction coefficient for two-equation turbulence models is incorrect, with a curvature effect being predicted for flows that have no... |
KNOWN ISSUE: Reynolds stress modelling with GGI fluid-fluid domain interfaces (Class 3 Error) |
SYMPTOM:<br>If a Reynolds stress turbulence model is used for a case which includes a fluid-fluid domain interface, then the accuracy of the solution is... |
KNOWN ISSUE: Mass flow calculations for GGI interfaces in parallel may be incorrect (Class 3 Error) |
SYMPTOM:<br>If a case with GGI interfaces is run in parallel, then the mass flows on the interface(s) calculated in CFD-Post or by using a quantitative CEL function such as... |
KR16: What is the meaning of VOF Courant number and Global Courant number in FLUENT and how are they related? |
When ANSYS FLUENT performs a time-dependent VOF calculation, the time step used for the volume fraction calculation will not be the same as the time step used for the rest of the transport... |
KR17: What is the Text User Interface (TUI) in FLUENT? |
The Text User Interface (TUI) is a command line interface to FLUENT. The text commands can be typed in the FLUENT console to execute many operations.<br><br>In any menu, hitting enter... |