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COMPUTATIONAL FLUID DYNAMICS | CFD BASICS 

2BrokeScientists
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In this week’s video, we talk about one of the most discussed topic in Fluid Mechanics i.e. Computational Fluid Mechanics (CFD). CFD is a branch of fluid mechanics that uses computers to simulate fluid flow problems. We talk about the need for CFD and the various steps involved including discretization(meshing), solution and post processing. We also talk about the fifferent forms of the Navier stokes equation that are used to reduce computational effort from direct numerical simulation(DNS), Large eddy simulation(LES), Reynolds Averaged Navier Stokes (RANS)equations.
The tutorial on ANSYS FLUENT will be uploaded soon.
Hey! If you haven’t come across our channel yet, we are five masters students (Nikhilesh, Kushal,Ankith, Akshar and Sanjeet) pursuing Aerospace Engineering at T U Delft in the Netherlands and make science videos every week. Please do subscribe to our channel and share the videos.
#Science #TUDelft #Masters
Also check out Ankith’s other channel at / ankithjohn

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23 мар 2019

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Комментарии : 105   
@jayteehope217
@jayteehope217 4 года назад
00:00:00 Introduction 00:00:53 Fluid Dynamics/Mechanics Introduction 00:01:23 Motivation to use CFD 00:02:00 Fundamental Principles of Fluid Dynamics (Conservation of Mass, Momentum and Energy) 00:04:38 Navier-Stokes Equations and Limitation of solving analytically 00:05:49 Solve Navier-Stokes Equations with help of CFD 00:06:30 Discretization 00:07:37 Convert Partial Differential Equations into a System of Linear Algebraic Equations 00:09:24 Solving process 00:09:51 Post-Processing: Visual Inspection, Check on Mass Conservation, Force Inspection etc. 00:10:36 Solving Turbulent Flows: RANS vs LES vs DNS 00:11:38 Reynolds-averaged Navier-Stokes equations (RANS): Time-averaging of Flow Qunatities 00:12:45 Large Eddy Simulation (LES): Modeling of small-scale Eddies, Resolving of large Eddies 00:13:28 Wrap-up
@nishipal3297
@nishipal3297 4 года назад
You people should be acknowledged for your work by great academicians..keep shining
@rajasgaikwad883
@rajasgaikwad883 3 года назад
Thanks a ton for making this video! The level of attention to details is unparalleled, feels like I've read an entire book in this 15 minute video. Keep up the good work guys! Your efforts are very much appreciated. Cheers!
@Ameerscholary
@Ameerscholary Месяц назад
guys u just made huge shortcut for fluid dynamics thnx alot for this video
@bhushan797
@bhushan797 3 года назад
1st video on RU-vid who removes doubts about CFD kudos to you guys..
@SIRAC.KILINC
@SIRAC.KILINC 2 месяца назад
I can't pass this video just by watching. I both liked and commented. Thanks to two of you👍
@benjaminkohweien6572
@benjaminkohweien6572 4 года назад
This is very informative for my final year project, thank you.
@aakashsr6404
@aakashsr6404 2 года назад
Excellent work!!! Not only the fluid flow, your flow of explanation is exceptional...! Cheers both you guys !!!
@NeptunePictures
@NeptunePictures 4 года назад
Watching you from France. Very instructive ! Thank you :)
@rameenmeerann4876
@rameenmeerann4876 4 года назад
Wow I like the video of CFD with simple explanation, may continue with a real simulation as examples. Great
@bhaskarchawdhary6219
@bhaskarchawdhary6219 5 лет назад
Wow, thanks alot sir. You explained the topic so well.
@raghukoduri2018
@raghukoduri2018 4 года назад
hope u continue the CFD series....very informative and thnks a lot
@mbinacedric3566
@mbinacedric3566 23 дня назад
thank you for your explanation, it is so clear!!!
@AKannadiga
@AKannadiga 10 месяцев назад
Found this video very insightful. You guys have explained all the concepts very well. Waiting for the ANSYS video. Please upload it soon guys. Keep up the good work!
@uvaraniaka1920
@uvaraniaka1920 5 месяцев назад
Hi guys, this video is really informative to clearly understand the overviews of CFD. Randomly i saw this video and very impressive of you guys.. clearly explained how all the things worked out in CFD... keep going
@harshakorlur1007
@harshakorlur1007 4 года назад
Very Good Brief Introduction for beginner like me. Thank you very much.
@abhishekm1755
@abhishekm1755 2 года назад
Clear understanding...... thank you so much guys 💐💐💐💐💐💐💐💐💐💐💐💐💐
@devangmistry1172
@devangmistry1172 3 года назад
Beautifully explained. love it.
@Tamb097
@Tamb097 4 года назад
Compliment, very clear without report confusional or wrong info
@EAR.Pakistan
@EAR.Pakistan 7 месяцев назад
Great dears. I hope u will reply my question too. 1. In my CFD analysis, Total pressure is not being equal to static pressure plus dynamic pressure. Where I am wrong? 2. Why velocity profile is near walls. 3. How to display maximum / minimum values of results in graphic display.
@ubaidmundewadi6368
@ubaidmundewadi6368 4 года назад
Really helpful video...Make more videos to explain the integral terms
@bharatbhusanrout8726
@bharatbhusanrout8726 4 года назад
Superb bro .. u are make this cfd very easy
@abhishekshingala1212
@abhishekshingala1212 4 года назад
Simplest explanation. Thanks
@kottapallibalamuralikrishn4703
@kottapallibalamuralikrishn4703 4 года назад
Thank u sir,this vedio helped me a lot
@Heremyadress
@Heremyadress 8 месяцев назад
This is a great video with terrific explanantion of the topic!
@albitesdecenonancybetty2775
@albitesdecenonancybetty2775 4 года назад
very clear, thanks a lot
@sudhidm3122
@sudhidm3122 4 года назад
Excellent job guys.👌👌👍
@venkatabrahmatejaharidasu9656
@venkatabrahmatejaharidasu9656 3 года назад
This is really a great video.... I still can't understand why there are only 3k subscribers..
@ranilorubiano
@ranilorubiano 2 года назад
Great Summary. I hope you guys have better visual aids in explaining those important equations... But this is worth watching and as if the summary of what i learned about CFD in several months..
@haria5482
@haria5482 4 года назад
Good job. Very informative.
@arnabsaha2330
@arnabsaha2330 4 года назад
please make a video on basics of fluid dynamics it will be helpful for me . By the way this video is very well explained.
@mosta7050
@mosta7050 4 года назад
you're amazing guys
@FazlayElahi
@FazlayElahi Год назад
Love from Bangladesh 🇧🇩❤️
@sakumaran94
@sakumaran94 4 года назад
Awesome overview
@watchwise2231
@watchwise2231 4 года назад
Thank you guys, great , looking forward for your next video
@2BrokeScientists
@2BrokeScientists 4 года назад
Thanks for watching, stay tuned for more!!
@natarajanm8051
@natarajanm8051 4 года назад
Very very nice video..super 😍 But..i expected more animation it's easy to understand... Thankyou
@rushabhyeshwante
@rushabhyeshwante 3 года назад
Thanks for making this video.
@shanuddin6876
@shanuddin6876 3 года назад
beautiful explanation ty alot
@kodururaju3230
@kodururaju3230 4 года назад
Nice explanation all the best
@ziaurraman3237
@ziaurraman3237 4 года назад
Very accurately explained
@petsatcom
@petsatcom 4 года назад
Great job thanks
@atulverma8736
@atulverma8736 10 месяцев назад
loved the video
@ayanthasilva4094
@ayanthasilva4094 Год назад
Superb guys. 🤟😍
@NB-zj4yv
@NB-zj4yv 3 года назад
Thanks for this video
@adityanayak3314
@adityanayak3314 9 месяцев назад
May I request you sir when one person explain that is better to group because student watch your vedio that is very briefly stable in his mind thank you sir
@diegos2184
@diegos2184 2 года назад
Super bueno, muchas gracias, it means, Very good, thanks from colombia
@contentofAI
@contentofAI 4 года назад
Thank You sir
@senthils5416
@senthils5416 4 года назад
Whatever the equation and theory it may be it ll b helpful if u explain in detailed form n concepts with practical examples.basics of Ansys is very important to know CFD.so pls try to upload the video lectures accrding to tat.
@shilajawani4003
@shilajawani4003 3 месяца назад
Great...two gem....But How do I grow up my knowledge in theoretical part ?Any book ? Thanks a lot bhai (for the video )
@STWNoman
@STWNoman 4 года назад
Awesome
@RamPrasad-jx5cg
@RamPrasad-jx5cg 4 года назад
Its very Nice
@adityanayak3314
@adityanayak3314 9 месяцев назад
Good very nice
@erianmuk6091
@erianmuk6091 5 лет назад
Thanks guys!
@coffeegirl8285
@coffeegirl8285 2 месяца назад
Really enjoyed the video and cleared a lot of my doubts..... but the outro volume gave me a heart attack
@abhishekmc5483
@abhishekmc5483 3 года назад
please explain this : low pass filter in LES, modelling the reynolds stress means what?
@Kme-karanAhirwar
@Kme-karanAhirwar 4 года назад
Can we apply ns equation for two different domain at a same time in cfd.
@denonavarra5567
@denonavarra5567 8 месяцев назад
Спасибо
@anandh1967
@anandh1967 4 года назад
Super sir
@STWNoman
@STWNoman 4 года назад
Make a video to explain these integral terms
@smailhamidatou367
@smailhamidatou367 3 года назад
Sir thanks for your efforts to... but I have a question which is at 12:15 min how I can get their equation RANS?
@debasis8523
@debasis8523 4 года назад
Good video
@mangeshdeshmukh2140
@mangeshdeshmukh2140 Год назад
Brilliant Explanation , you made things easy to understand , great teachers , keep it up & god bless you both !
@manikandanr7389
@manikandanr7389 Год назад
Kindly give videos that should explain works of journals.
@Ameerscholary
@Ameerscholary Месяц назад
i will write each mote you mention god bless you
@noway2831
@noway2831 4 года назад
Is there a way to take limits in computer science using the epsilon-delta definition? As in, instead of doing f(x+0.00001) where f(x) is undefined but \lim_{h \to 0} f(x+h) is defined?
@sherlockk6547
@sherlockk6547 Год назад
👍👍
@yukieperamesti
@yukieperamesti 4 года назад
Thank you for the video. Would I ask a question about meshing? If I want to simulate the gas explosion in the tunnel (but it is simulate by experimental apparatus). What is the appropriate kind of mesh can I use? Thank you, please let me know the answer. Thank you
@yukieperamesti
@yukieperamesti 4 года назад
the shape of experimental apparatus is block with the dimension 25 cm x 19 cm x 164 cm
@laidsalem1554
@laidsalem1554 2 года назад
Hi,how to find initial conditions and boundary conditions, but I have only Mach number (supersonic velocities), inlet angle and Reynolds number. Thank you.
@DK-gt9br
@DK-gt9br Год назад
How can i understand that how mathematics is working behind a fluid flow i mean i can't imagine this mathematics? What should i do And thank you for such a wonderful explanation
@wolah100
@wolah100 5 лет назад
I think convergence should have been included to make it more rounded.
@jhwblender
@jhwblender 4 года назад
I know it's a bit of work. But I would appreciate subtitles
@2BrokeScientists
@2BrokeScientists 4 года назад
Thanks Jesse for the suggestion, we will try and add it soon!!
@jhwblender
@jhwblender 4 года назад
Thank you! 😃
@krishnamaurya9761
@krishnamaurya9761 Год назад
🙏🙏
@shivendrapatel443
@shivendrapatel443 4 года назад
Make a video suggesting which software should we use for CFD like comsol, ansys, abacus etc
@2BrokeScientists
@2BrokeScientists 4 года назад
Hey, it really depends on the specific case and the prior experience you have with these software's
@engineeringsimulationstudi1404
@engineeringsimulationstudi1404 4 года назад
nice
@engineers_hub
@engineers_hub Год назад
Where is the ansys demonstration link you spoke about in the video?
@gokulsomanathan9540
@gokulsomanathan9540 3 года назад
Myself 25yr old I want to change my path in this career.. Previously was am piping stress engineer..can u explain scope and various platforms of this and one thing is I don't want to doing any course and also getting knowledge from books and videos those enough for beginning
@saisharath2496
@saisharath2496 3 года назад
Hii.. I need to know more about the CFD stimulation how can I approach you can u please explain to me
@AngelLestat2
@AngelLestat2 4 года назад
it is possible to simulate many different physics aspects in the same simulation? Like the effect of buoyancy, thermal flow, phase change for parameters that variant with height for example?
@2BrokeScientists
@2BrokeScientists 4 года назад
Yes, I think there are options to implement the specific conditions on some solvers. But we would suggest you to go through the Software manual to see if it can be implemented.
@AngelLestat2
@AngelLestat2 4 года назад
​@@2BrokeScientists thanks, glad you answer. one last question, without knowing nothing of CFD and the basic principles and formulas for the physics involve, how many hours of tutorials and practice are needed to start to understand how operate these complex softwares? I imagine around 50 to 150 hours? Or some are quite easy to figure out?
@2BrokeScientists
@2BrokeScientists 4 года назад
That would depend on what your goal is. If you are just curious to learn what is happening about the flow then you can just follow some online tutorials and implement them but to actually produce results that mean something its better to start from the fundamentals and then build from there. The time for that is highly variable on your pace of learning and how in depth you want to go
@deepakdivakaran9320
@deepakdivakaran9320 4 года назад
Very useful content, The curve example which was the simplest example to explain discretisation. Please do more videos :-)
@nikhilmahalingesh7561
@nikhilmahalingesh7561 5 лет назад
Won't low-pass filtering remove large scales in LES?
@2BrokeScientists
@2BrokeScientists 5 лет назад
In Large Eddy Simulations(LES) the idea is to resolve the large scales and model the small scales. The small scales correspond to higher frequencies, where as large scales correspond to the lower range and hence low pass filtering will allow low frequency(large scales) and attenuate higher frequencies(small scales). Link: sites.google.com/site/smokeisnojoke/lesrans2.jpg
@benjaminoluwadare6125
@benjaminoluwadare6125 3 года назад
Hi, Please send video on turbulent flow modelling. Tx
@2BrokeScientists
@2BrokeScientists 3 года назад
You can check out this beaituful channel for all the details: ru-vid.com/group/PLnJ8lIgfDbkrhQTjGZ_22z7NoktJTrTF1
@vishvanthgunasekaran1316
@vishvanthgunasekaran1316 2 года назад
where can i learn more about CFD?
@joshuaprabhatpallapati5266
@joshuaprabhatpallapati5266 4 года назад
can u suggest some text books for cfd ?
@mechanicalengineering1528
@mechanicalengineering1528 4 года назад
J.D Anderson, computational fluid dynamics. Hoffmann, computational fluid dynamics ,with different volumes
@tuhinpatranabish4450
@tuhinpatranabish4450 Год назад
How to get Andy's Fluid software
@tuhinpatranabish4450
@tuhinpatranabish4450 Год назад
How to get ANSYS FLUENT software
@michaelshaughnessy9809
@michaelshaughnessy9809 2 года назад
where is the Ansys Fluent tutorial?
@agileshathithya
@agileshathithya 2 года назад
interested for the equation
@petsatcom
@petsatcom 4 года назад
What CFD software is affordable for 2 broke scientists? I assume the $20K software packages are out of reach?
@2BrokeScientists
@2BrokeScientists 4 года назад
Haha, don't think we have the money to afford any CFD software 😅 Hence the broke scientists 🤣
@rushabhyeshwante
@rushabhyeshwante 3 года назад
Use OpenFOAM, it's free,but you need an understanding of C++. In OpenFOAM you will get lots of online support. There's also Salome-CFD. Star CCM+ is GUI based but it is damn expensive.
@asha-techdotcom
@asha-techdotcom Год назад
Hahaha thank you the two broke scientists
@vishvanthgunasekaran1316
@vishvanthgunasekaran1316 2 года назад
are you tamil
@arjunkk3146
@arjunkk3146 10 месяцев назад
Bett
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