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I need to create one Named Selection for every face in the tree, but this is a big model. How can I automate this process?


You can write some JScript to perform this action. The following input can be pasted into a file with a JS extension and run from within Simulation/Mechanical from the Tools...

KNOWN ISSUE: RMS residuals for scalar equations in multi-domain cases may be incorrect (Class 3 Error)


SYMPTOM:<br>RMS residuals for scalar equations in multi-domain cases may be incorrect.<br><br><br>PROBLEM:<br>For multi-domain cases, the CFX-Solver combines the RMS...

Can I include frequency-dependent material properties in Workbench Mechanical?


Yes. Perhaps the easiest thing to do is to place one Commands object beneath each body for which you want to modify material properties. An example of these commands have been included below, but...

What is the maximum size of model that can be created in DesignModeler?


The DesignModeler application's geometry engine has a one cubic kilometer size box limit, centered about the world origin. This means that all geometry must be reside within 500 meters of...

Error when reading a scheme file in Linux:
"Error: eval: unbound variable"


In some cases when you transfer the file from PC to Unix, the file becomes unacceptable as it contains ^M as the line breaks. For example, a scheme file created on PC may not work on linux...

What is the difference between shell 63 and shell 181?


SHELL63 and SHELL181 are different in many aspects:<br><br>1. SHELL181 is first order shear deformation shell, while SHELL63 does not account for transverse shell energy<br>2....

What is the difference between tangent stiffness and stress stiffening matrix?


Tangent stiffness is applicable only to nonlinear systems (e.g., large deformation, nonlinear materials, etc.). The tangent stiffness relates the change in reactions and small displacements from...

KNOWN ISSUE: Incorrect use of gas constant in NES nucleation model (Class 3 Error)


SYMPTOM:<br>When using the non-equilibrium steam model, the amount of nucleation predicted by the model is in error, and therefore incorrect results are...

How can I easily define the matrix transformation needed for periodic boundary conditions in POLYFLOW? How can I easily use the source- and target-points?


Whatever the shape of the sides that are considered for the periodic boundary condition, it is always possible to select three points defining a "source-plane" and to calculate their...

What is the use of the normal force or flow rate when defining a periodic boundary condition in POLYFLOW?


When the periodic boundary condition involves a rotation only, there is formally no pressure difference between the source and target sides. The main reason is that one comes back to the source...

KNOWN ISSUE: Monitor data export can lose precision (Class 3 Error)


SYMPTOM:<br>When monitor data is exported from either the Solver Manager, or using the cfx5mondata utility, there is the potential for the accuracy of the data to be...

What does the traces button do under a block's properties?


The trace button allows users to import trace data onto a block to create a more detailed representation of a board. The data is most easily imported as Cadence Allegro files, but general Gerber...

I have assigned individual side specifications to a block but no matter what I do, I keep getting an error that some sides are not in the mesh. What is wrong?


Icepak has two different meshing priorities, priority by number and priority by object type. While versatile, an Icepak block object has one of the lowest object priorities by TYPE meaning that...

When I try to mesh my model I keep getting an error about thin conducting plates and non-conformal assemblies. What is wrong?


Since thin conducting plates are being solved in 3D but meshed in 2D, non-conformal elements cannot be calculated properly when the thin conducting plate is intersected by the...

How can you use transient temperature boundary conditions for cylindrical side faces in ANSYS Icepak?


There are two ways to do this:<br><br>1. If you are not modeling anything outside the cylinder, then you can create a low priority prism block so that the cylinder is within the prism...

How to provide boundary conditions in Fluent when only total pressure drop is known?


Pressure inlet is formulated with total pressure and pressure outlet with static pressure.<br>You cannot directly provide total pressure drop as a boundary condition.<br><br>A...

My ANSYS software writes temporary files to a network drive, but this drive is not available when I take my laptop off site. How can I change the location of these temporary files?


The network drive is set to your home directory e.g. H:HOMEusername. It is set by your IT administrator when your account was created on your computer. It can be changed by setting the...

How do I report time step (timestep) and flow time (flowtime) to the TUI?


To get data type the following into the TUI as required:<br>(rpgetvar 'flow-time)<br>(rpgetvar 'time-step)<br><br><br>If you need to reset either of...

KNOWN ISSUE: Error in moving mesh correction for pressure-work term at Domain Interfaces (Class 3 Error)


SYMPTOM:<br>In moving mesh cases that also use the Total Energy model, unphysical temperatures and/or fluctuations in temperature may be present in the solution at or near Domain...

How Do I change the ICEM CFD's working directory to another directory instead of using the default "My Documents" directory?


<br>Right click on the ICEM CFD icon and select properties. Under properties you have select the shortcut tab, where you have field "start in" you can give the path of your...

KNOWN ISSUE: Non-drag forces and GGI interfaces (Class 3 Error)


SYMPTOM:<br>When using some advanced multiphase physics models, especially the virtual mass force, numerical inaccuracies at GGI interfaces may be greater than in other applications. If...

KNOWN ISSUE: Use of time step in particle user routines (Class 3 Error)


SYMPTOM:<br>The particle integration timestep is an argument that can be used in particle user routines, especially the particle source routines. If the timestep is used in these Fortran...

KNOWN ISSUE: Monitored torques may be incorrect on the first timestep or iteration after a restart (Class 3 Error)


SYMPTOM:<br>If a case which includes a monitor of torque is restarted, then the monitored values of torque are calculated incorrectly the first time that the monitor is evaluated, if the...

In the Coupled-Field Guide problem 2.15, "Sample Piezoelectric Analysis," the piezoelectric strain matrix is input with the commands

tbda,2,d31
tbda,5,d33
tbda,8,d32

How do constants d31, d33, and d32 correlate to positions 2, 5, and 8 in the piezoelectric strain matrix?


Over the years, different authors may have used different formats for piezoelectric coefficients. When IEEE published Standard 176, they used a format that they found to be common in literature,...

I am using ANSYS 12.x with Academic licenses. How can I clear the error "Error: Feature ... does not exist in the ANSYSLI Pool?"


Switch the Global License Type to Use Academic Licenses.<br><br>Open the Client ANSLIC_ADMIN Utility under Start -> Programs -> ANSYS 12.1 -> ANSYS Client...