Very Interesting, can I get the code for traveling salesman problem.
@a.n.h37342 ай бұрын
Thanks for sharing this video, I have problem the during the importing the geometry, maybe there is a problem. Can you check the link is still working or not?
@Spacetime_ghost2 ай бұрын
Awesome video, thank you so much. Sometimes I see derivations where there is some pressure component, at this time I had to go over the derivation a bit quickly, but if anyone can shed some light on the -P*delta_ij that I have seen in some forms of the stress tensor please let me know.
@BYUFLOWLab14 күн бұрын
Take a look at my writeup here: flowlab.groups.et.byu.net/me515/aero.pdf, specifically equation 1.113. The pressure term always exists, it's just a matter of preference whether you define that pressure term as part of the stress tensor or not.
@robbypradana-ei4yv2 ай бұрын
I'm interesting about this. May i have ur email. Ee can discuss about it . Can yiu help me about my research. Thanks before
@BigMoneyPauper3 ай бұрын
How might this algorithm change when the evaluation of f(x) is noisy? In that you can estimate the value at any given step but not know it exactly. More practically, if this situation presents itself is there a clear way to solve this sleekly in python with something simple like scipy? Thanks for the informative video!
@MikkelUnrau3 ай бұрын
Great video! Dr. Ning has always been a master teacher. Are there any rules of thumb for initial edge length on the simplex?
@BYUFLOWLab14 күн бұрын
usually just 1, assuming you've normalized all your inputs
@knip-pink3 ай бұрын
Hey, you keep mentioning a book. What book is it exactly ? I can’t see any links in the description.
@BYUFLOWLab14 күн бұрын
You can get the PDF here: flowlab.groups.et.byu.net/me515/aero.pdf
@knip-pink14 күн бұрын
@@BYUFLOWLab Thank you very much for the link ! Btw, I used BEMT for a shrouded Ducted Fan optimization code. Works great. Perhaps you might have any additional ressources on a model that also accounts for Lip Design (Inlet Design essentially being reduced to standard Turbomachinery Theory) of an EDF and not only a shrouded EDF ?
@user-ix9oj3sv9y4 ай бұрын
@dES.C14 ай бұрын
Good Job
@brandonhicks75494 ай бұрын
You have the lift and drag axes swapped in your discussions around 5:30 on
@caixiaoyong4 ай бұрын
Great explanation, I finally understand the backtracking line search method.
@user-dg2gy6xl8k5 ай бұрын
Hi, I'd like to ask, at 15:46, why is my auto mesh (2D) parts option empty inside
@user-mr4gq5sc6z5 ай бұрын
I am confused because the Rot region has 2 million more cells than the video, despite having the same parameters.
@user-kj2um4zm9t6 ай бұрын
Great video and great help!!! I just did as same as your video, but the thrust and torque is different with yours. If possible, can i get your sim file...? and there isn't information fluid conditions like Temperature, Pressure, viscousity.. etc. I need help please..
@user-tm9sr9jn2r6 ай бұрын
Hello, : import Pkg Pkg.add("NLPModels") pkg.add("NLPModelsIpopt") using NLPModels using NLPModelsIpopt myobj(x) = (1 - x[1]^2) + 100 * (x[2]-x[1]^2)^2 x0 =[1.3, 0.5] Model = ADNLPModel(myobj, x0) .... did not work, and i think there changes by git hut, it is not look similiar like you use. but tthanks, it was very good to hear :)
@koensmits68256 ай бұрын
amazing video
@thesilenceisalsoalanguage4768 ай бұрын
what do u think the other more better methods would be ?
@Houshalter8 ай бұрын
Thanks for making this.
@Lukas-sn7hu8 ай бұрын
'Promo SM'
@jamjam29738 ай бұрын
Thank you! Waiting to another awsome video :)
@qohelet19 ай бұрын
Excellent tutorial. The progression through the various topics is carefully graduated, the examples are helpful, and the explanations are clear. Thank you for sharing.
@satyamshukla339 ай бұрын
what if i want to plot the contour in a range (-5 to 5) aligning with the colorbar. will that be okay to put level -5 to 5?
@franciscoparraguez45769 ай бұрын
Very interesting video. It is like the Chain Rule, attempting to find the derivative in a composition of functions. Thank you so much !!!!!!
@rezapishkar56519 ай бұрын
great explanation
@SunilSundar9 ай бұрын
How does this math relate to the physical design of the aircraft? Can you make a video about how to design an aircraft for dynamic stability? Thanks
@BYUFLOWLab7 ай бұрын
It's hard to generalize (e.g., adding a winglet may improve dutch roll for one aircraft while making it worse for another). For conventional aircraft you can come up with some rules of thumbs by analyzing the contributions in the stability derivatives. Those are fun (though limited), and maybe I should put together a video on that sometime. But the general approach is numerical experimentation (or optimization). You make changes to the design and observe the eignevalues in the complex plane. There are various tools out there that can facilitate this kind of study.
@mbfog6309 ай бұрын
Super helpful video, can you do a quick video on your VSCode shortcuts / design / tricks for Julia?
@BYUFLOWLab9 ай бұрын
I've got a couple on the playlist that might help with what you're looking for. Here's one one starting with VSCode: kzbin.info/www/bejne/iHvcgZ6ajdemgLs and one on getting started with Julia: kzbin.info/www/bejne/jp-QgpKtqrdoi9E
@jamjam297310 ай бұрын
❤❤
@jamjam297310 ай бұрын
Thank a lot! Waiting to another awesome Julia tutorial
@georgen975510 ай бұрын
It hard to follow because many many people are deprieved of thier livelihood ......... Previously guys understood so much that the entire city was commuting back and forth for culturals for industrial trips for casual visits for preview primieir and after amassing wealth in one slot others were asked work in shifts for stalls and recreation and many activities ..... why ....always they can conduct anything and everything without peers Gentlemen peer reviwed yet certificates are missing ........ where do i post my complaints Faculty grievances
@georgen975510 ай бұрын
Aspirants certificates are not disbursed
@georgen975510 ай бұрын
Sea level thrust is acting in the upward direction Barometric pressure is acting in the downward direction Temperature fluctuations due to radiation of sun Many temples do not have acess in all the directions probably you might have seen temples without windows and doors on the backyard Many temples are built on sea shores and generally having only one acess to the temple In any case the doors were open it will suck all the sea water flooding the temples and eventually flood during monsoon ..... If the sea water swells into tunnels you need too much of energy to expell the saline water and the thrust is more as sea water is denser than streams ...........this could cause not only flash floods but also pooling of water which may endanger people living on the rear of thrust side ...... It appears as though it is raining eventhough there is no rain but along the coastline tunneling is frequent for towing and anchoring boats day sailor day sailor day sailor
@georgen975510 ай бұрын
Dubai Hilton , Playback singer Dubai Hannifa Baby
@georgen975510 ай бұрын
Direction: E , S , E ; /a;
@georgen975510 ай бұрын
Plot: s-plane; /a;
@georgen975510 ай бұрын
HTML : s
@georgen975510 ай бұрын
It is clear that a4 is arbitrary s: dim(w1 U w2) = n £(52)
@georgen975510 ай бұрын
Failure modes of structure Mooring and offshore structures Steel braces Bucking failures ? Torsional shear
@franciscoparraguez457610 ай бұрын
Thank you so much !!!!!
@counterflow571910 ай бұрын
My father worked with Amo Smith and John Hess as they developed their compter program using this method at Douglass Aircraft in 1960. My father did a study of ducted fans. He was the first to apply the program to a real world study.
@BillHaug11 ай бұрын
thank you
@ces-gp11 ай бұрын
thank you!
@mikhailk357211 ай бұрын
Thank you, happy that YT forward me to your channel! Very useful software
@Observ45er11 ай бұрын
You mis-speak several times in this video. For example: At time 16:21, you say "If there is no gravity, It should just make it back up " I suspect you mean there is no friction or drag. .. Then when you DO mention friction, you trace the same no friction curve. Poor. .. Your hand-drawn chord line at t=19:40 is pretty far off. ..
@BYUFLOWLab10 ай бұрын
sorry. glad you were able to sort it out.
@Observ45er10 ай бұрын
@@BYUFLOWLab The quality and usefulness to others is low with errors. It should be corrected if the rest of video can be taken seriously. You're helping no one, only providing confusion. . What are you trying to do with this video? .. Are you attending, or attended BYU? It doesn't look good for them.
@VJVJVJVJ111 ай бұрын
Hi, Very nice tutorial indeed. Just a question, when I follow your steps, it will give a final result after 3600 iterations, but it looks like steady simulation. How can I extract the timestep results and create animation for each 3 degree variation? thank you!
@jayakrishnanharikumaran375811 ай бұрын
are you using sublime text for julia? How do we setup the build system for it in sublime text?
@BYUFLOWLab10 ай бұрын
I used this package: github.com/JuliaEditorSupport/Julia-sublime Although these days I use VSCode.
@kiranrarsenalfc11 ай бұрын
Very good and informative tutorial. I had a few queries please.. 1. Is there no requirement of identifying a time step that satisfies the CFL stability criterion rather than fixing the time step only based on number of steps desired per revolution? 2. Can we use a field function approach for implicit unsteady simulations to undertake the simulations over a range of advance coefficients in a single run rather than running at each advance coefficient desired in different runs? 3. Is there no requirement of specifying prism layers in the propeller boundary layer based on the target y+ parameters? Thanks in advance :)