Can't run electromagnetics in AIM

Something is wrong with the solver settings in the Electromagnetics when I select frequency response. I get the error:

"Unsupported type for creation: SkinDepthResolution

Parameter name: entityType"

With details

"at Microsoft.Scripting.Runtime.BinderOps.InvokeMethod(MethodBase mb, Object obj, Object[] args)

at Microsoft.Scripting.Interpreter.FuncCallInstruction`4.Run(InterpretedFrame frame)

at Microsoft.Scripting.Interpreter.Interpreter.Run(InterpretedFrame frame)

at Microsoft.Scripting.Interpreter.LightLambda.Run5[T0,T1,T2,T3,T4,TRet](T0 arg0, T1 arg1, T2 arg2, T3 arg3, T4 arg4)

at System.Dynamic.UpdateDelegates.UpdateAndExecute4[T0,T1,T2,T3,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3)

at Microsoft.Scripting.Interpreter.DynamicInstruction`5.Run(InterpretedFrame frame)

at Microsoft.Scripting.Interpreter.Interpreter.Run(InterpretedFrame frame)

at Microsoft.Scripting.Interpreter.LightLambda.Run3[T0,T1,T2,TRet](T0 arg0, T1 arg1, T2 arg2)

at System.Dynamic.UpdateDelegates.UpdateAndExecute4[T0,T1,T2,T3,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3)

at Microsoft.Scripting.Interpreter.DynamicInstruction`5.Run(InterpretedFrame frame)

at Microsoft.Scripting.Interpreter.Interpreter.Run(InterpretedFrame frame)

at Microsoft.Scripting.Interpreter.LightLambda.Run2[T0,T1,TRet](T0 arg0, T1 arg1)

at System.Dynamic.UpdateDelegates.UpdateAndExecute2[T0,T1,TRet](CallSite site, T0 arg0, T1 arg1)"

 

And my physics selections and regions are never valid, potentially due to this.I can't run electromagnetic simulations, even when its the only one listed. I'm using aim, gonna try the old UI.

I can't run any electromagnetic solutions

«1

Comments

  • pglpgl Portland, Oregon, USAMember
    edited July 2017

    Can you please provide a bit more detail on the analysis you are trying to perform and a screenshot of your physics settings?  

    My assumption at this point is that you are interested in an Eddy Effect Computation? This is available for Physics Regions with the Physics type set to Electromagnetics and the Physics Calculation type set to Frequency response. From the product manual section " Physics > Physics Options > Eddy Effect Computation" : 

    Eddy Effect Computation allows you to control both Eddy effect and Displacement current computations for the conductors in an electromagnetics frequency response design. Eddy effect refers to current flow (eddy currents) induced by a time-varying magnetic field in conductors; while displacement current refers to currents due to a time-varying electric field. The effects of these currents on the solution tend to be more significant at higher frequencies.

    To control Eddy effect and displacement current computations:

    Select an option for how Eddy effect computation is applied. The default is Program controlled, which automatically selects all conductors for the computation, or you can explicitly choose from the following:

    • User defined, which enables you to select the conductors you want to include. Note: Eddy effect computation must only include conductors.
    • Off, which instructs the solver not to perform Eddy current calculations.

    Select an option for how Displacement current computation is applied. The default is Program controlled, which automatically selects all conductors for the computation, or you can explicitly choose from the following:

    • User defined, which enables you to select the objects you want to include. Note: Conductors selected for Displacement current computation must also be selected for Eddy effect computation. You can choose to apply Displacement current computation alone for non-conductors you select.
    • Off, which instructs the solver not to perform displacement current calculations.

     

  • ECEPSUECEPSU Member
    edited July 2017

    Thank you for you response! Yes I am trying to simulate a high frequency response in a small Copper wire. I'd also like to include structural and thermal analysis when possible. I've included some screenshots below.

    Where do you find this setting: " Physics > Physics Options > Eddy Effect Computation"? I'm not sure if the "the product manual section" is what I'm looking at in my screenshots  I'll look for it elsewhere in the mean time but I did not see it under physics in my first screenshot

    I see solver options but there's nothing available:

    Thanks!

    Alec

     

  • ECEPSUECEPSU Member
    edited July 2017

    I've tried only using the Electromagnetics as the only "physics type" and I keep running into this error (see image). The program doesn't elaborate on why the combination is invalid

  • ECEPSUECEPSU Member
    edited July 2017

    I want to clarify that I am mostly interested in the skin effect in Copper, as well as other materials. I need to verify that ANSYS is capable of modelling the skin effect at high frequencies.

     

    But I can't seem to get the electromagnetics template working no matter what I do!

  • pglpgl Portland, Oregon, USAMember
    edited July 2017

    Here's how to access the help system and product doc. 

    Scroll down the LHS menu for the sections I mentioned above, or use the Search feature. That will answer your questions on the electromagnetics simulation. 

    Make sure you are using the 18.1 product also. 

  • ECEPSUECEPSU Member
    edited July 2017

    I appreciate the resource, however I still don't see these settings anywhere. For example Physics > Physics Options > Torque Computation and Physics > Settings > Frequency Response

    Am I looking in the wrong place for options and settings? I'm not sure where else they could be, or why my physics regions are considered to be invalid.

    Do I need to resolve the physics regions before these options are available? I've tried with and without an air enclosure, and still no luck. I don't know why "Electromagnetics" is still not a valid option:

    No such section Physics > Physics Options

    Thank you

     

  • ECEPSUECEPSU Member
    edited July 2017

    Also I made sure I am running 18.1

  • ECEPSUECEPSU Member
    edited July 2017

    If I delete the electromagnetics physics type I cannot add another physics type! Something is wrong with the program. I have installed version 18.1 on two Windows 10 machines, one Windows 8.1 Machine, and 1 Windows 7 machine and gotten the same results.

     

    There are may features that are missing that are listed in the help manual. The physics type feature is broken as shown above, and I haven't seen items such as Physics > Settings > Frequency Response anywhere in the actual program. Nor have I seen any visual aids referencing these tools.

     

    The program actually states that it cannot find "GetGeneralPhysicsOptions"!

    Also, the "Unsupported type for creation" error occurs every time I run the electromagnetics module and select one of the options 

  • vganorevganore Pune, IndiaAdmin
    edited July 2017

    Alec, here is the webinar link on relay switch showing how to setup magnetostatics physics under ANSYS AIM. I hope this helps.

    http://www.ansys.com/Resource-Library/webinar/ansys-in-action-calculating-force-in-a-relay

  • ECEPSUECEPSU Member
    edited July 2017

    Thank you for directing me to that tutorial, it confirmed the where "Physics Options" and "Electromagnetic Conditions" should be. However they are still not available in my installation.

    In the video, Ming imported his geometry and specified the static calculation type. I did the same, as usual, and didn't see "Physics Options" and "Electromagnetic Conditions". He was using 18.0, so I'll try installing 18.0 again and follow his steps exactly (importing geometery is in a slightly different order in 18.1)

  • pglpgl Portland, Oregon, USAMember
    edited July 2017

    Can you perform a clean installation?  Your current installation might be corrupted or getting confused with some license manger settings from an earlier version that was installed. i.e. Remove ALL versions of the Student product, including the License Manager IF you have previously installed the Release 17.2, or an even earlier version of the the product. This is key. Then download and install R18.1 again, preferably on your Windows 10.0 machine. 

    I still recommend that you use Release 18.1 as it adds further electromagnetics capability compared to 18.0.

     

     

     

  • ECEPSUECEPSU Member
    edited July 2017

    I just performed a clean install of 18.1 and still no luck.

    In addition to my Windows 10 desktop, I have installed it on my Windows 10 laptop, Windows 8.1 work laptop, and created a new partition on my desktop where I installed it on Windows 7. I still get the same errors on each machine

    I have also made sure to re-download the .zip file several times. I deleted the old directory from 17.2 as well. I've made sure that I have all of the prerequisite programs installed. I've been running the installation as an Administrator as described in the installation directions. 

    The tutorials are for the commercial version, correct? Has anyone tried these tutorials on the Student AIM version?

    Thanks,

    Alec

  • pglpgl Portland, Oregon, USAMember
    edited July 2017

    HI Alec, 

    You've been extremely diligent in your installation and testing. I'm sorry that you are still running into problems. 

    The tutorials on our academic webpage and YouTube channel are designed for the AIM Student product. But generally, the AIM student product differs from the commercial AIM Pro product only in terms of the numerical problem size & geometry limits. The errors you are sharing don't immediately point to those limits being hit, so something else is wrong here. 

    On my personal R18.0 AIM Student installation I'm able to see and interact with "Physics Options" AND "Electromagnetic Conditions", so it is unusual that you don't see these options in your installation! Here's my screenshot:

    Whereas you see:

     

    I'll forward this over to Ming Yao for his review. 

    Hang in there.

     

     

  • ECEPSUECEPSU Member
    edited July 2017
  • edited July 2017

    Errors like this typically indicates that the project has been corrupted some how. 

    Usually you need to start a new project or reload the project before the corruption.

     

    Does any of the other simulation templates work? 

    When you start a new project. At what point do you get the 1st error?

    You can also try deleting this folder

    C:UsersusernameAppDataRoamingAnsysv181

    ANSYS uses this folder to store local settings so this acts like a reset.

     

    Best regards

     

     

  • rexxarrexxar Member
    edited September 2017

    I have same problem too, same error like ECEPSU have. I have try two simuluation, in both i have same error. When i start a new project, import geometry file and when i go to "Physics" then show error.

  • pglpgl Portland, Oregon, USAMember
    edited September 2017

    Go ahead and try some of the suggestions that [email protected] provided above. i.e. "..Errors like this typically indicates that the project has been corrupted some how. ..Usually you need to start a new project or reload the project before the corruption.

    • Do any of the other simulation templates work? 
    • When you start a new project. At what point do you get the 1st error?
    • You can also try deleting this folder
    • C:UsersusernameAppDataRoamingAnsysv181
    • ANSYS uses this folder to store local settings so this acts like a reset.

    Keep us posted. 

  • hollanskhollansk Member
    edited October 2017

    I too am having the same challenges developing an electromagnetics simulation. I was hopeful to have students use AIM to visualize fields.

    I set up a simple two magnet geometry. Immediately after importing the geometry, I receive the "Physics Region Warning" and "Selected Physics Type is not valid" message. No further options. I have tried a clean reinstall and all of the tricks above. Any progress on this issue?

    Would it be better to switch to the ANSYS Student instead of AIM? Just concerned about learning curve for students... but working is better than not, I suppose!

  • edited December 2017

    I installed new Windows 8.1 Professional x64.

    Installed Ansys 18.1 on it and got the same problem -  it can't run electromagnetic

    Uninstalled Ansys 18.1, restarted my laptop, installed Ansys 18.2 and got the same problem

    Yes my laptop is old 3GB of RAM, Core 2 Duo 2.4 Ghz CPU, Nvidia 9600GTM. But is it really hardware problem? ECEPSU got the problem on 4 different PCs.

    How does one fix it?

     

     

  • alvromcalalvromcal Member
    edited February 2018

    Hi guys, 

    I'm having the same kind of problems as you, and I am employing a new powerful Workstation (i7, 16 Gb RAM, 1 tb SSD, 2tb HDD, NVIDIA Quadro 2200M...). Has anybody found a solution? 

     

    Bests

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