Can't run electromagnetics in AIM

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  • Last Post 09 December 2017
ECEPSU posted this 17 July 2017

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

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pgl posted this 18 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.

 

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ECEPSU posted this 18 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

 

ECEPSU posted this 19 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

ECEPSU posted this 19 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!

pgl posted this 19 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. 

ECEPSU posted this 21 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

 

ECEPSU posted this 21 July 2017

Also I made sure I am running 18.1

ECEPSU posted this 23 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 

vganore posted this 26 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

Vishal Ganore, ansys.com/student

ECEPSU posted this 26 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)

pgl posted this 26 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.

 

 

 

ECEPSU posted this 26 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

pgl posted this 27 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.

 

 

ECEPSU posted this 28 July 2017

Thank you!

mingyao.ding@ansys.com posted this 28 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:\Users\username\AppData\Roaming\Ansys\v181

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

 

Best regards

 

 

rexxar posted this 27 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.

pgl posted this 28 September 2017

Go ahead and try some of the suggestions that mingyao.ding@ansys.com 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:\Users\username\AppData\Roaming\Ansys\v181
  • ANSYS uses this folder to store local settings so this acts like a reset.

Keep us posted. 

hollansk posted this 03 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!

Windows 8.1 Pro x86 posted this 05 December 2017

The problem is ANSYS AIM 18.2 or 18.1 can't run electromagnetic simulation.

I have tried 2 weeks... unistalling, reinstalling, downloading, cleaning on Windows 8.1 Pro Build 9600 X64, 3GB of Ram, Core 2 Duo CPU.

electromagnetic simulation doesn't work at all. The form of a solid doesn't matter, it doesn't matter if a solid was draw in SpaceClaim or it was imported from other CAD system. The aswer will be "The selected physic type or combination of physics type is not valid" Maybe 17.2 Aim is better, but there is no link to download. Of course the 2 hours cloud version of Aim 18.1 works  but it is only 2 hours.

 

 Another message on the site about this problem

 

 HighRes screenshots were attached 

 

Deleting C:\Users\username\AppData\Roaming\Ansys\v181 or C:\Users\username\AppData\Roaming\Ansys\v182 don't help.

Maybe the problem is that i have a russian version of Windows 8.1 but the name of the user is in english "Admin" and the path to the Ansys as well "C:\Program Files\ANSYS Student"

Changing Windows system language from russian to english doesn't solve the problem.

 

 

Windows 8.1 Pro x86 posted this 08 December 2017

Extensions Log File

 

 

HighRes screenshots were attached 

Attached Files

Windows 8.1 Pro x86 posted this 09 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?

 

 

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