Search found 1436 matches

by thorsten
Tue 01 Sep 2020, 21:45
Forum: Usage
Topic: imaginary part of feed.R
Replies: 1
Views: 1605

Re: imaginary part of feed.R

Hi, the FDTD method is a time domain method (TD). Thus it does not have any concept of complex numbers or values. Only after you convert data from time domain into frequency domain (via FFT or DFT) during post-processing you have complex values. Thus you cannot use complex values for anything or any...
by thorsten
Tue 01 Sep 2020, 21:42
Forum: Usage
Topic: Time step (or sampling frequency) of the field dumps
Replies: 2
Views: 1651

Re: Time step (or sampling frequency) of the field dumps

I assume you mean the hdf5 field dumps? The openEMS read functions contain a TD signal with the exact timesteps that were saved. This is of course very important if you want to transform from TD to FD. Have a close look here: https://github.com/thliebig/openEMS/blob/master/matlab/ReadHDF5FieldData.m...
by thorsten
Tue 01 Sep 2020, 21:38
Forum: Usage
Topic: simulation never finishes. fields seem frozen?
Replies: 2
Views: 1965

Re: simulation never finishes. fields seem frozen?

Energy that continuously increases usually means that the PML have gone unstable. The PML are usually the only element that is not inherently stable.
You may try to move them further away and/or make sure the mesh inside of them is homogeneous and in good shape.
by thorsten
Sun 26 Jul 2020, 14:59
Forum: Install
Topic: TinyXML becomes a big problem
Replies: 12
Views: 10499

Re: TinyXML becomes a big problem

Well yeah, Octave from snap won't work I guess.

I have updated the readme on github, let me know if this are really all required packages...

regards
Thorsten
by thorsten
Fri 24 Jul 2020, 16:31
Forum: Install
Topic: TinyXML becomes a big problem
Replies: 12
Views: 10499

Re: TinyXML becomes a big problem

I'm not sure what you are doing but the packages seem to be wrong! On Ubuntu 18.04 it should be sudo apt-get install build-essential cmake git libhdf5-dev libvtk7-dev libboost-all-dev libcgal-dev libtinyxml-dev qtbase5-dev libvtk7-qt-dev I hope I did not miss any important package... regards Thorsten
by thorsten
Mon 20 Jul 2020, 23:44
Forum: Install
Topic: TinyXML becomes a big problem
Replies: 12
Views: 10499

Re: TinyXML becomes a big problem

Hm, no openEMS can use any vtk version. I use 8.2 here. Try Qt5 packages and the latest vtk. It should work fine. I really have to update the required packages for a later Ubuntu. The problem is that I do not use Ubuntu anymore and thus I'm not really up to date and what packages should be used. reg...
by thorsten
Mon 20 Jul 2020, 23:17
Forum: Install
Topic: TinyXML becomes a big problem
Replies: 12
Views: 10499

Re: TinyXML becomes a big problem

Hm, I never had any issues with tiny_xml so far, even on cutting edge distros like Manjaro...
I will have a closer look...
by thorsten
Wed 08 Jul 2020, 20:35
Forum: Usage
Topic: Licensing
Replies: 1
Views: 2336

Re: Licensing

Hi, openEMS is licensed under the GPL . More infos here . But this license only applies to the software itself. Only if you want to include openEMS (the software) into your own software product you have to oblige to the GPL license. Any output, data, idea or results obtained with openEMS, is your ow...
by thorsten
Thu 02 Jul 2020, 09:32
Forum: Usage
Topic: Customized Waveguide Port
Replies: 1
Views: 2341

Re: Customized Waveguide Port

It is all defined here: https://github.com/thliebig/CSXCAD/blob ... Parser.cpp

If I read my already eight year old code correctly it should be "y0" and "y2".
The reason for y is that this is the name in "math.h". Don't ask me why...
by thorsten
Tue 30 Jun 2020, 09:59
Forum: Usage
Topic: usage of different prio is giving entirely different return loss curve!
Replies: 4
Views: 4147

Re: usage of different prio is giving entirely different return loss curve!

I can only recommend to never use the same priority twice. Unless you are 100% sure they do not touch. STL is a bit tricky as it is unclear what happens if the STL surface is not closed or in others ways not healthy. Make sure the STL is closed, manifold and so on. Then add the STL as metal and noth...