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MvdM

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MvdM last won the day on April 8

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About MvdM

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  1. As far as I know there is a bug in Feko 2018.2 and 2018.2.1 (fixed in Feko 2019) that causes an error when using DGFM to solve SEP regions (I responded in the duplicate thread). I would also recommend you upgrade to the latest version of Feko 2019.
  2. Sorry, Mel. I had typed the response before you had locked the thread. The duplicate thread is: https://forum.altair.com/topic/36393-dgfm-errors-sep-feko-2018/
  3. Hello Eliz Unfortunately you are using a version that will not work to solve your antenna array containing SEP regions with the DGFM. It is strongly recommended to upgrade to the latest version of Feko - the current version is 2019.1.1. DGFM is supported for SEP regions in version 14.0.430 and later, excluding versions 2018.2 and 2018.2.1. The reason for version 2018.2 and its patch being excluded is a regression that got introduced in version 2018.2. It is fixed in Feko 2019. The CEM validate message is wrong (this is a known defect) and should be updated. Kind regards Madelé
  4. Hello @SUG Please see this comment: Kind regards Madelé
  5. The model only contains model mesh parts. It does not contain any geometry. Meshes cannot be exported to geometry formats (like Parasolid).
  6. In the attached model the simulation meshes and model meshes are the same, so it does not matter which option is chosen. I have done another visual inspection and could not find differences between the attached Gerber file and the CADFEKO model. Have you used a Gerber viewer to see if the exported file contains the layout that you expect?
  7. Hello @designer First off, we need to identify if the problems you are experiencing are with the CADFEKO export. I had a quick look at the model that you attached and exported the mesh to Gerber and DXF formats using a recent version of CADFEKO. I viewed the exported Gerber file in a Gerber viewer and it seems to be complete (I only did a quick visual check, so I could have missed problems). I also viewed the .dxf file in a CAD viewer and imported it into CADFEKO and I could not identify any problems by doing a quick visual comparison. The .dfx file of course only contains the outline of the mesh (this is expected). How did you evaluate the exported files to verify whether they contain the expected layouts? Can you attach the .gbr or .dxf files that you obtained from CADFEKO with screenshots that show the issues that you are observing? I'm not familiar with HFSS and cannot comment on the best format to use for transferring your layouts between the two software packages. Does HFSS support other mesh imports like STL or NASTRAN? Kind regards Madelé
  8. Hello @Sirajudheen For others to be able to assist, it would help if you could explain what you would like to do with the data and what format the data is in. Are you using CADFEKO to import the radiation pattern to use it as a source in further simulations? If so, please refer to the "AR Card" documentation for the required format. Kind regards Madelé
  9. Hello @Sirajudheen Have you managed to import the radiation pattern? The answer above tells you how to import the data to use it as a source in further simulations - see the "Field Data" and "Equivalent Sources" sections in the CADFEKO chapter of the Feko User Guide. If it is not a Feko far field result (.ffe file), you can refer to the AR card documentation for the required format. You can also import the data into POSTFEKO to plot it on a graph - see the "Data Import" section in the POSTFEKO chapter of the Feko User Guide. If the format is not Feko far field data (.ffe), you can import it as a custom data file. Kind regards Madelé
  10. Hi @briantvd Feko 2019 was released yesterday and is available from Altair Connect. It contains the fix for the problem that you reported in this thread. Kind regards Madelé
  11. MvdM

    Bug Report

    Hello @KamilT You can create a Support Request on Altair Connect. Navigate to Altair Connect from the HyperWorks website (https://altairhyperworks.com/) or visit Altair Connect directly at https://connect.altair.com/: Kind regards Madelé
  12. MvdM

    FDTD problem

    Hello @John1989 The FDTD solver currently only supports wire ports and edge ports, so you could use a pin feed to excite the waveguide if you want to solve it with the FDTD. You can refer to Example A-11 in the Feko Example Guide: The model that uses a pin feed to excite the horn antenna can be switched to and solved with the FDTD. It is on the development roadmap to support waveguide ports for the FDTD solver. If this is of importance to you, or if you would like to be informed when it is supported, please request this through the official support channels - see Altair Connect for support contact details or to create a support request. Kind regards Madelé
  13. Hello @uehara01 You can have a look at the thermal analysis example (script) that is available from the Script Exchange on Altair Connect (https://connect.altair.com/). I'm not sure if it would be suitable for your application - it is an implementation of the Pennes bioheat equation for use in the healthcare industry. Our development teams are working on a more general solution that will allow using Feko to calculate the power loss and OptiStruct to calculate the thermal effects in future. Kind regards Madelé
  14. Hello @Kuzi Can you please elaborate on what geometry you are trying to create? Do you have an article that you can reference? I'm not sure I understand what you are trying to build. I don't see how you would end up with realistic geometry (something that you would by able to manufacture) by sweeping the face along the helix. I also think you would also run into CAD problems if you do that. We might be able to provide suggestions if we understand your problem better. Kind regards Madelé
  15. Hello @Olya Please refer to the Installation Guide. You can download the Feko Installation Guide from Altair Connect (https://connect.altair.com/). Go to HyperWorks downloads section. Click on the "Readme" link next to the Feko installer, or switch to the Documentation tab and look for the Feko and WinProp installation guide. Please let me know if I misunderstood your question. Kind regards Madelé
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