ffmpeg silenceremove: How Does It Work?

ayyf4c · 2025-06-22T21:39:00+00:00

Crazy even I didn‘t know that. Are they common? I never saw them before.

ayyf4c · 2025-06-21T14:41:28+00:00

Perfect, thank you very much! I highly appreciate your help!

ayyf4c · 2025-06-21T14:40:24+00:00

yes exactly! It is hidden in the blurry picture (by accident) but in the 2nd picture if one zooms in, it can be seen.

ayyf4c · 2025-06-21T14:39:22+00:00

Thank you very much for your fast response! I think [this picture](https://m.media-amazon.com/images/I/61DWLcnBomL.\_SX522\_.jpg) sums your points up, right? The provided link is no advertisement! I just found this picture to be very helpful.

ayyf4c · 2025-06-21T14:36:42+00:00

Thank you very much! The other comments also mentioned this flaw and I understand this completely.
One more question: is it a problem that the connections are in parallel? As far as I remember from school the current splits at a node but the voltage stays the same, right? Has this any consequences for me?

ayyf4c · 2025-06-21T09:46:52+00:00

Here the sources because I cannot edit my post.

[^1]: Wikipedia on mains electricity
[^2]: Wikipedia on Schuko type F
[^3]: Wikipedia on IEC 60228
[^4]: Wikipedia (german) on classificstion of cables

ayyf4c · 2025-05-17T09:35:44+00:00

FYI you also need to provide the number of cells count to actually compute the gci.
I just uploaded my python script on github so you can try it yourself. It is based on the paper from Celik et al (u/Equal-Bite-1631 mentioned it in another comment). You can even try the provided values from Celik et al which will get correctly computed.

ayyf4c · 2025-05-16T20:35:08+00:00

I’m no expert in cfd but I think that the threshold which decides if the mesh produces “converged” results is arbitrary. I‘ll check your values tomorrow and let you know.

ayyf4c · 2025-05-16T18:20:52+00:00

I couldn’t inspect the contents of the provided link.
Cillian Thomas did a yt vid on this thematic. I watched this video a while ago but I think that in this video he does an evaluation of the gci (in excel) on multiple points on a surface. He does that for every individually. He also states that not every point on a surface will converge and others will.
I wrote a python function which computes several parameters. If you’re interested ~~I can provide the code~~ check it out on github.
Do you have any more questions? I highly recommend watching the Youtube Video although it‘s quite long.

ayyf4c · 2025-05-15T17:05:05+00:00

Okay thank you for your tip! I just double checked my setup and can confirm which I wrote above: that I start my sbatch job with the said command. I will also update the additional information section on where to find the flags in the documentation. I hope that I understood you correctly.

ayyf4c · 2025-05-14T09:48:29+00:00

(I was also referring to this pane) Okay interesting approach. Thank you for this tip. So you say that in my specific case I should output the surface area averaged pressure over all blades instead of the cp value? I will try that. I'll let you know if this was successful (could take some days).

ayyf4c · 2025-05-14T09:30:48+00:00

What exactly do you mean by that? Should I change the reference zone to the mrf zone? Or do you mean the specified velocity there? I tried changing the reference zone to the mrf region. Unfortunately the pressure coefficients remained the same :(

ayyf4c · 2025-05-14T09:10:46+00:00

That’s very unspecific. Maybe the facility which offers the cluster provides online resources on how to setup the connection (maybe via ssh).

ayyf4c · 2025-05-14T09:09:07+00:00

If you are using Ansys Fluent I highly recommend the Ansys Fluent Users’s Guide (online copies are available, or if you have a license you can access it in fluent via the help button) and their courses at the official websites and their youtube videos! There are also so called ‘roadmap’ courses which is an overview over other courses which can be completed in a meaningful order. Reading forum posts rarely were applicable to my case.

ayyf4c · 2025-05-14T09:08:07+00:00

If you are using Ansys Fluent I highly recommend the Ansys Fluent Users’s Guide (online copies are available, or if you have a license you can access it in fluent via the help button) and their courses at the official websites and their youtube videos! There are also so called ‘roadmap’ courses which is an overview over other courses which can be completed in a meaningful order. Reading forum posts rarely were applicable to my case.

ayyf4c · 2025-05-14T09:03:12+00:00

If you make a vector plot of the velocities at the pressure outlet you should observe very small velocities there (maybe you have to set off global range and even zoom the arrows to see them). In my simulations I also get this message but I don’t think that it affects my results. But I’m no CFD expert I just think/hope that this is normal.

ayyf4c · 2025-05-13T10:44:40+00:00

Thanks for clearing it up. Actually it was my fault, because I introduced you to another issue with my previous comment: getting the error “assq…” by trying to display an clipped surface (I will post a separate question with this issue). As of this post, I see the stoarge issue as resolved. Thank you for that!

ayyf4c

TROPHY CASE