Відео

Super helpful. Thanks for the video

What is meant by the right scale (10-60).

Thanks a lot, you saved our hot wire practice at Centrale Lille !

I was wondering if you have any scaling relations for the wake of the turbine? How does the loss in the turbulent wake scale with the wind speed and the length scale of the rotors? Or maybe a Reynolds number scaling? Let me know if there is a published study that I can access. Thanks and cool work!

excellent video

Just wanted to thank you for your videos on turbulence, they have really helped me with my studies. You have managed to make a fairly difficult topic seem so simple

thank you. I have a question btw how can we find cp2l cp2u values?

How to I get the energy-frequency plot from a data set???

I don't understand how I can calculate the energy specta plot from my given data set from a DNS simulation. I have accurately calculated the autocorrelation function, but how do I use that to find the size of the smallest and largest eddies present in the flow?

its confusing between the instantaneous part and the fluctuating part

Would you happen to know a good MS-level research topic on Wind Turbine Wake reduction using only CFD RANS? I was thinking about changing blade design is some way to recover from the wake, sort of like a passive way but I'm struggling to find a concrete idea. Please let me know if you have any, I have to submit a research proposal in a week. Thank you!

That looks like a lot of wasted energy. When you could easily create a turbine that looks and is designed just like a tornado and capture at least a good 80 maybe even 90%. H*** what am I saying I 3D printed one and it spins like crazy pluses the faster it go the Quieter it gets

can you suggest the textbook ?

Thank you !

Thank you !

Does not look like it's propagating far. Towards the end the waves starts to slow down and hit up against other waves which is causing that pluming you see behind it

How do you made the geometry for the same can you share

Dissipation time scale?

13 minutes of concise and clear explanation, far better than my 3 hour undergrad lecture.

Thanks for this great content, I admire everyone watching the rest of the videos.

This is probably super important for quantum mathematical predictions

Is it possible to model a turbulent flow in k-e simulation dominated by coherent turbulent structures? I think in RANS simulation (in general) we would have some problems e.g. with ergodicity (averaging becomes meaningless)

Can you give the idea how to set pulsatile boundary condition

Hi professor, this is a really helpful video, thanks a lot for it

I didn’t know what was meant by mesh until i watched this video. You’re absolutely my man. Thanks a lot. 🌹🌹💙

always use your lectures to recall myself turbulence topic, thank you Jörg! Greetings from Austria, Alexander

Thanks I have a question which is if you would do private lessons with regard to Ansys fluent (fire simulation )

Thank you so much. I really enjoyed it!

Why Don’t I get convergence when I make mesh finer ? But just for an interval

8:20 -> M2n is squared and needs to be square rooted before moving on to M2

I can't seem to get M2 right? You get it as 2.86. I am using the equation as M2n/(sin(Beta-Theta+Alpha)) and I get 2.6

So basically microbursts are just bombs out of water

Great video!!! thanks

Hi Jorg, Is this published already?

Amazing simulation.

why do we do averaging of both sides of the equation?)

why do we do averaging of the equation?

hi sir, how can we calculate the empirical value?

Which tool was used to simulate this?

Noticed that in some range we have straight line either when we look at energy spectrum distribution vs different length scales or plots that u gave in the video.. As I understood correctly, either self-similar behavior can be shown as a straight line in log-log graph; as well as if we are dealing with some dimensionless quantities; as well as we can approximated behavior of a process with power-law , pareto of log-normal distribution in some range (implying statistical approach of course..)

Got a lab report on this. This video has been very helpful.

How does one get centerline velocity experimentally ?

Your videos on turbulence are amazing. Please keep up the good work. We would love to see some videos on DNS and LES of turbulent jet.

best video ever thank you very much

Thank you so very much for this useful video!

Thank you for uploading and sharing this series with all of your efforts. Dr. Jorg, one suggestion, your audio volume can be increased a little bit.

Great topic. Thanks for sharing.

Nice topic. Thank you for sharing.

Thank you

Hi Sir .... Thank you for the last 📷 video... But i wanna ask you just one question which is . How can I get the shart which has nusselt number vs mesh grid and what's the goal of it ?