Royalty-free images/visualization tools?

udw_pea · June 7, 2021, 10:04

Hi all

I am completely new to CFD and I apologice in advance for my outsider question. I am looking for something very simple and hope you can give suggestions or re-direct me to the relevant sub-forum.

Basically, I need images of turbulence. If possible, water turbulence and ideally in size ranges from mm to km. Really, I don't have any other requirement. It sounds too general, I know, but let me explain:

I love turbulence and find it one of the most interesting phenomena in nature. I know very little about it (from the physical point of view) but I know a lot of its effects on underwater organisms (I'm an aquatic biologist). So I am setting a teaching/communication graphical environment where I want to have turbulence pictures (and if possible, short animations as well).

Just to clarify:

It is only for decorative purposes, but I want to have images of "real" turbulence (or should I say, science-based images). What I mean is that I don't want to draw by hand or "invent" an images. Rather I want images which come from actual equations (or observations).
Of course I can find many images online, but I try to be educated (even when probably nobody would notice) and use only copyright-free images (or non-commercial licences, etc. you get the point).

For example there is this beautiful one (see the image at the bottom in a yellow rectangle) but it belongs to a company (very interesting by the way [of course I'm not affiliated in any way with it, just found it online and think it's gorgeous]).

Anyway, I am looking for suggestions on the following (in this order)

royalty-free images, or
online simulators to generate my own images, or
suggestions on free, open source software to generate my own images.

If any of you can/want to contribute with images, I will obviously give due credit in case of using it.

"Can't you do it yourself"? Well I am quite fluent in Python, but as far as I know it is not the language choice for any of this heavy modeling (I guess you guys use Fortran, Matlab, right?).

Again, sorry for this uncommon post and thanks a lot for your suggestions, let's hope I can make more people interested in turbulence!

aero_head · June 7, 2021, 21:06

As a fellow turbulence/nature phenomena nerd, I love this idea.

If I find any good repositories, I will update this post.

There's a Johns Hopkins Turbulence Database here: http://turbulence.pha.jhu.edu/, might be a good starting point. There are 2 neat videos on the website, and some external links that I do not have time to check out right now.

Here's an article about how they can reconstruct a turbulent flow field with machine learning: https://www.researchgate.net/publica...extFileContent

Will be following this thread!

June 7, 2021, 10:04	Royalty-free images/visualization tools?	#1
udw_pea New Member RJG Join Date: Jun 2021 Posts: 1 Rep Power: 0	Hi all I am completely new to CFD and I apologice in advance for my outsider question. I am looking for something very simple and hope you can give suggestions or re-direct me to the relevant sub-forum. Basically, I need images of turbulence. If possible, water turbulence and ideally in size ranges from mm to km. Really, I don't have any other requirement. It sounds too general, I know, but let me explain: I love turbulence and find it one of the most interesting phenomena in nature. I know very little about it (from the physical point of view) but I know a lot of its effects on underwater organisms (I'm an aquatic biologist). So I am setting a teaching/communication graphical environment where I want to have turbulence pictures (and if possible, short animations as well). Just to clarify: It is only for decorative purposes, but I want to have images of "real" turbulence (or should I say, science-based images). What I mean is that I don't want to draw by hand or "invent" an images. Rather I want images which come from actual equations (or observations). Of course I can find many images online, but I try to be educated (even when probably nobody would notice) and use only copyright-free images (or non-commercial licences, etc. you get the point). For example there is this beautiful one (see the image at the bottom in a yellow rectangle) but it belongs to a company (very interesting by the way [of course I'm not affiliated in any way with it, just found it online and think it's gorgeous]). Anyway, I am looking for suggestions on the following (in this order) royalty-free images, or online simulators to generate my own images, or suggestions on free, open source software to generate my own images. If any of you can/want to contribute with images, I will obviously give due credit in case of using it. "Can't you do it yourself"? Well I am quite fluent in Python, but as far as I know it is not the language choice for any of this heavy modeling (I guess you guys use Fortran, Matlab, right?). Again, sorry for this uncommon post and thanks a lot for your suggestions, let's hope I can make more people interested in turbulence! aero_head likes this.

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June 7, 2021, 21:06		#2
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 8	As a fellow turbulence/nature phenomena nerd, I love this idea. If I find any good repositories, I will update this post. There's a Johns Hopkins Turbulence Database here: http://turbulence.pha.jhu.edu/, might be a good starting point. There are 2 neat videos on the website, and some external links that I do not have time to check out right now. Here's an article about how they can reconstruct a turbulent flow field with machine learning: https://www.researchgate.net/publica...extFileContent Will be following this thread!