Fluid Mechanics 101 is a channel dedicated to bringing you up-to-date, scientifically validated discussions in fluid mechanics. Computational and numerical methods are covered extensively, with a focus on modern, commercial and academic codes. At all times, methods and discussions are referenced correctly, with open-source links provided where possible.
The channel aims to be a reliable and convenient source of information for scientists, engineers, academics and researchers, so that formulae, methods and data can be accessed quickly, avoiding hours spent digging though textbooks and research papers to locate a single formula! As the channel aims for information to be convenient, videos are deliberately kept short and concise.
All suggestions for new video topics/clarification/error spotting are welcome and strongly encouraged and can be posted in the comments section or sent to [email protected].
Welcome to the channel. I hope you find it an indispensable resource!
![[CFD] Inflation Layers - Part 2 (Corners, Orthogonality, Smoothing)](/img/d.gif)
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Thank you for this amazing video! What is the best model for Fume hood simulation? I see a lot of people using realizable k-e
At 9:10 I think it would be '(a) backwards & (b) forwards' rather than '(a) forwards & (b) backwards', because ∂p/∂x is equal to (p_2,1-p_1,1) / Δx at u staggered grid (1,1) of (b). This is defined as forwards at 15:26. Could you check this?
Thanks for your effort
thank you so much...
What a lecture!
Please dont stop doing these great explainers. :)
You explain all these concept so well, thank you!
Oh my GOD! I cannot even think how on earth I would have understood these materials if I had not found your channel! THANK YOU SO MUCH 🙏🙏🙏🙏🙏
healing power
Excellent thank you so much for your time
Great! Before my exam it was mindblowing.
Your channel is a gem, please make a lecture series about combustion in CFD (Oriented to Ansys Fluent if possible)
When a fine near-wall mesh is created to achieve y+=1 for use with SST or k-w, what to do when rough walls are applied?
¿Es correcto usar el mismo mallado del dominio computacional adyacente a la pared, para tubo hidráulicamente liso que para hidráulicamente rugoso, solo cambiando el parámetro de rugosidad en la pared?. Is it correct to use the same meshing of the computational domain adjacent to the wall, for hydraulically smooth pipe and for hydraulically rough pipe, only changing the roughness parameter on the wall?
The filtering operation has not been touched anywhere perhaps
Wow! Man this video is amazing !
thank you for explanations!
Interesting starting slides about the pressure gradient, but the pictures and the discussion are not really correct. The pressure is computed and stored at each face but the normal points in whatever direction is determined by the discretization method used by the solver, . CFX and Fluent are different in this detail.
what is the suitable under relaxation factor in the case of mixed convection?
what is the suitable under relaxation factor in the case of mixed convection?
Awesome video. All your content is amazing and you're truly a lifesaver! It's hard to measure the impact you've created but I'm sure it's wider than you can possibly imagine. Thanks for the amazing work
8:51 It's unclear whether Ks (equivalent sand-grain roughness height) refers to the diameter of the sand grains used, or to the height of protrusion of those grains. Surely, the grains must have some depth of embedment into the substrate. Is this depth ignored?
Impact on the Lagrangian particle tracking because of phase change (mass transfer) ? Thankyou
Great video! My case study is tubular heat exchanger. Where can I find the equations for internal flow in order to calculate the boundary layer thickness (δ99)?
The BL fills the pipe in an internal flow. Use 20% of the pipe diameter instead as a reasonable estimate
@@fluidmechanics101Thank you for your reply! Do you have a reference that expresses this correlation?
Hey Aidan, Thank You very much for this amazing lecture!! I had a doubt... Isn't internal energy equal to "c_v * T" rather than "c_p * T", which is instead for enthalpy?? Then why are we using "c_p * T" for internal energy here?? If anyone can help, please do...
Hey Adrian, Thank You so much for your lectures!! They have been truly helpful. Can you please upload a video explaining the fvSchemes and fvSolutions files in OpenFOAM and the different interpolation techniques and solvers (with smoothers) used in them... I am asking for this because I don't understand these methods listed out there... It will truly be of much help to me and to all those OpenFOAM Users out there...
Impeccably explained 🔥
It is unbelievable how you have made this so easy to understand. Thank you!
Waiting for part 2..
Very useful, and clear explanations!
Thank you, the video is very clear!
I love you so much. Really glad that you are explaining from a basic level.
Great Explanations!!! Thanks mate
How is the pressure at a cell face adjacent to a wall boundary calculated? In order to calculate the pressure force on a body for example
What a wonderful lecture series. Once again, well done! I do have one ambiguity that I'm trying to work through: if we're considering compressible flow, and our Mach number is greater than 1, shouldn't our characteristic speed be either the maximum velocity in the cells or the maximum velocity at the boundaries, rather than the speed of sound? For example, for a Mach number of 2, shouldn't the local velocity be twice the speed of sound? If we're aiming to be conservative by taking the greatest representative speed, shouldn't we use the local velocity (U_cell) in this situation?
This is a fantastic lecture series. Well done!
Thank you for this! The lecture was clear and the figures made the topic very intuitive.
What a great video! Is it possible you give me a reference to one of your lectures so I can understand better the physical meaning of the "Source Term". Greetings from Medellin, Colombia.
Hi congratulations! Your explanations are really clear and I like that you also give references to aboard the mathematical part. May I use some of the diagrams you used for my thesis? I'll cite your blog, videos and youtube channel in return. Greetings!
Sure 😊 good luck with your thesis
@@fluidmechanics101 thanks a lot :)
Shouldn't the inernal energy be e = Cv * T? Cp * T is the enthalpy
Yes you are right. This is a very old video and hopefully I will redo it one day!
The best. Thanks
Thanks, Aiden! It is a fantastic video that helped me a lot to understand this model, but there's one question: as it is mentioned in the papers, this model is not Galilean invariant, but I'll find many papers using this model to model moving body problems like Darrieus wind turbines with dynamic mesh approach, isn't that a mistake? I understand why it's not correct to use MRF, but I can't understand why it's okay to use dynamic mesh when using this turbulence model.
Big thanks sir
You are great Sir 👍👍👍
Big thanx from OpenFOAM veteran) thumbs up!
Excellent talk!
Is it possible to use your presentation in the form of screenshots with mentioning your name?
no one qustions how the equation 7 and equation 8 dedrive the equation 9? in my view, equation 9 lacks a 1/2
Thank you sincerely for your lectures! Wish we had such teachers.
Great video! Thank you for making this series. I noticed an error in equation 14 (around the 15 minute mark). The face area (A_f) has been dropped from the last two terms.