Reynolds Number

This video is about the most famous non-dimensional number in Fluid Dynamics, the Reynolds Number. The discussion is from a practical point of view, especially from a CFD engineer's perspective.
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[@ankam3223]

This is one of the best lectures/videos I have seen. Explaining the real world concept with visuals. Looking forward to see more concepts to learn.

[@flowthermolab]

Thanks Ankam and many more videos are going to come soon.

[@sanathkumarnaikl7225]

One of the best video about Reynolds Number, Nicely Explained

[@flowthermolab]

Thanks Sanath

[@deathTurgenev]

Great lecture and great presentation! please keep making videos like these .

[@aboobackerkadengal2370]

Very good presentation and very informative, best wishes

[@flowthermolab]

Thank you sir

[@mgroxff2677]

Very Good information Sandeep Sir! Waiting for more videos...!😀

[@flowthermolab]

Thanks and many more coming soon

[@sampathgugulothu8226]

Sir, your lecture is very good. you made lecture easy to understand with pictures, examples, video clips etc. please do little more videos so it will be very very helpful for us. thank you so much.

[@flowthermolab]

Thank you for the feedback

[@serdarbicer719]

Thank you for this amazing video, looking forward to see many videos covering Other topics related to fluids and thermals!

[@flowthermolab]

Thank you Bicer

[@christophersathiya60]

Very detailed explanation about Re number

[@flowthermolab]

Thanks Christopher

[@sauravmaraseni6881]

Great Sandeep Sir

[@flowthermolab]

Thanks Saurav

[@prajwalbharadwaj2386]

Thanks a lot sir. EXTREMELY INFORMATIVE !!

[@flowthermolab]

Thanks alot

[@mohamadabdulrahim5869]

amazing lecture. i love it. thanks and keep making such videos

[@flowthermolab]

Thank you!. Sure many videos are going to come soon.

[@marcg.r.769]

Congratulations Sandeep. Very enlightnening and well confectioned

[@flowthermolab]

Thanks Marc

[@MuhammadRahatLatifTousif]

This video helps me a lot. Thank you sir.

[@flowthermolab]

It's a pleasure for us

[@shivav4437]

Great video full of information.

[@flowthermolab]

Thank you

[@malothrajkumar541]

Amazing video Dr. Sandeep🤩. Please keep posting about the flow physics!!

[@flowthermolab]

Thank you for watching and sharing your feedback.

[@vikasshevale6315]

very nicely presented....great...!!!

[@flowthermolab]

Thanks for your appreciation

[@MohammedIrfan-ph6sz]

It was a really nice video, great effort from you sir to brought together almost all real life applications of Reynolds number , was able to catch ideas even though it was little bit higher level 🎉❤

[@flowthermolab]

Thanks Mohammed

[@romantician]

Thank you sir for solving my confusion in renold number❤

[@flowthermolab]

Always welcome

[@gopalkrishnamukerjea4319]

Excellent lecture!

[@flowthermolab]

Thank you

[@manaoharsam4211]

Nice Lecture. But I have one question if you do Reynolds number scaling. Would you expect the flow of full scale vs small scale look similar. This means if I were measuring unsteady pressures on say a fuel tank would I be able to calculate pressures that I can believe that is coming from the small scale model. Or do you think the flow at higher number i.e. full scale will captures shock waves better so that there is really no similarity. Has anybody real done real simulation of how these large scale Eddie's break after the nozzle. All this happening at molecular level?

[@DripEntity]

Excuse me sir, I am 12 years old, and for my school project (STEM) I would like to measure the flight path turbulence with different Reynolds’s numbers, and was wondering if there would be examples of performing the calculations with an exemplary aircraft or shape. Thank you.

[@flowthermolab]

We are very happy that our content which are actually created for Engineers are also reaching to School students. To address your question to calculate the Reynolds number for aircrafts, the most important thing you should keep in mind is the fluid properties you use to calculate Re at the actual altitude of flight. It can be as high as 30-40K feet above the sea level and the density and viscosity will be very different at such altitude as the air temperature will be very low. So you need to look into the property chart and get the correct numbers. Re= rho x V x L/ mu. Here L you can take a characteristic length representing the real aircraft geometry or its wing.