Search found 171 matches

by Hale_812
Fri 14 Dec 2018, 09:15
Forum: Usage
Topic: Horn antenna, lumped port
Replies: 1
Views: 1680

Re: Horn antenna, lumped port

Lumped port is a cuboid-shped resistor, which vertices are strictly coincide with mesh-grid nodes. generally, is is a single 3D cell box with direction of current and resistance defined. One side touches ground plane exactly, opposite side touches metal probe, with planes coinciding exactly at the s...
by Hale_812
Tue 04 Dec 2018, 06:27
Forum: Usage
Topic: Split ring resonators
Replies: 2
Views: 2672

Re: Split ring resonators

probably, the simulation uses PMC, or PML for simulating periodicity (I don't remember which is applicable there) If not, you can not make it the same as HFSS. But the single-cell still can be simulated. And the object can be scripted in an array, I did such things before. really, usually the proble...
by Hale_812
Tue 04 Dec 2018, 06:20
Forum: Usage
Topic: Which hardware for openEMS?
Replies: 24
Views: 15295

Re: Which hardware for openEMS?

Avoid using dual processing for simulations that greatly exceed CPU cache, and do not use mirrored memory per CPU unit. Although, Intel introduced certain advances in inter-CPU RAM access mechanisms, these things are oriented primarily on server marked, not on high-performance computations. So the t...
by Hale_812
Fri 30 Nov 2018, 02:56
Forum: Usage
Topic: Which hardware for openEMS?
Replies: 24
Views: 15295

Re: Which hardware for openEMS?

I see. Well, If I can make use of all my cores available that would be good. it often happens with non-optimized codes that running them on N-1 cores, or with "below average" priority gives better results, because the "unused" time constitutes an important overhead for OS operations, supporting the...
by Hale_812
Thu 29 Nov 2018, 02:02
Forum: Usage
Topic: Which hardware for openEMS?
Replies: 24
Views: 15295

Re: Which hardware for openEMS?

help RunOpenEMS RunOpenEMS(Sim_Path, Sim_File, <opts, Settings>) --numThreads=<n> However, I am not sure it is working. If I remember correctly, when I tried --engine=basic, something went wrong... Well, just try it yourself. Octave is single thread by default. Unless there are external binary tools...
by Hale_812
Thu 22 Nov 2018, 08:13
Forum: Usage
Topic: Multi-grid and cylindrical coordinates problem
Replies: 9
Views: 5893

Re: Multi-grid and cylindrical coordinates problem

- Is there a smith chart plot option is OpenEMS ? if not i will make one. No. I've seen some scripts at Matlab official forum. But didn't try porting to Octave. This summer I posted here a good working script for radiation pattern, if you find it useful. - Is there a built option/function to choose...
by Hale_812
Wed 21 Nov 2018, 04:59
Forum: Usage
Topic: Multi-grid and cylindrical coordinates problem
Replies: 9
Views: 5893

Re: Multi-grid and cylindrical coordinates problem

@thorsten >No it cannot. In rect grids, subgrids are usually used to locally refine the mesh I should note another application again: for large antenna-to-antenna/radar simulations this can cut down free-space propagation time. So technically you don't have to set a small nested mesh, one inside oth...
by Hale_812
Fri 16 Nov 2018, 07:24
Forum: News
Topic: openEMS.de is back up again
Replies: 13
Views: 29477

Re: openEMS.de is back up again

And thank you so much for coming back!
by Hale_812
Fri 16 Nov 2018, 07:20
Forum: News
Topic: openEMS.de is back up again
Replies: 13
Views: 29477

Re: openEMS.de is back up again

>That host PC started having problems and constantly shredding the VM. Virtualbox? It is a well known shredder of VM descriptor files. You have to put backup there and check for the consistency with a script every time VBOx is tarting your VM. Oracle (then Sun, Innotek) have this bug for longer than...
by Hale_812
Fri 14 Sep 2018, 02:12
Forum: Usage
Topic: Circuit Co-Simulation
Replies: 5
Views: 3844

Re: Circuit Co-Simulation

I think, CST recalculates the capacitor, when changed. HFSS do. It is just possible to avoid iterative remeshing from the scratch. The most time consumed by time-domain solvers goes to iterative remeshing(refining). So, when you reuse pre-meshed models, a false impression of "not recalculating", can...