Non-Newtonian fluid, the harder you press, the harder it gets
π︎ 46k
π°︎ r/ThatsInsane
π¬︎
π€︎ u/-XDashX-
π︎ Oct 23 2020
π¨︎ report
Non-Newtonian fluid, the harder you press, the harder it gets v.redd.it/ovit72dkpxu51
π︎ 53k
π¬︎
π︎ Oct 24 2020
π¨︎ report
Non-Newtonian fluids turn into solids when pressure is applied. v.redd.it/yovso62qv3u51
π︎ 19k
π¬︎
π€︎ u/NolifeX
π︎ Oct 19 2020
π¨︎ report
Volcanic ash behaving like a non-newtonian fluid
π︎ 648
π°︎ r/geology
π¬︎
π€︎ u/Teranosia
π︎ Jan 19 2021
π¨︎ report
Instability in explicit FDM for Non-Newtonian fluid.

Hi r/CFD,

My friend and I wrote a finite difference method solver for truncated power law fluids in Python. As some of you may have guessed, we started down this path after trying our hands at the CFDPython module by Prof. Lorena Barba.

The code runs great for shear-thickening fluids(power law index n>1) and for a Newtonian(n = 1) fluid. We tested it against known analytical solutions for Pressure Driven Channel flows, aka. Poiseuille flows, and the results are quite a good match.

The issue we are facing comes from shear-thinning fluids(n<1). We have only been able to run it successfully for n >=0.8 or a little below and that too for a rather coarse grid of 34 by 34, but it still was very close to the analytical solution. If we even increase the grid fineness to a 51 by 51 grid, the solution diverges. We need some help to get an idea where this instability is coming from and how to get rid of it. We are already using \$dt = sigma * dx^(2) / nu\$ to make sure our time step is small enough.

I am posting a link to the pdf where I discretize the Momentum equations to account for the variable viscosity. The momentum equations and their discretized forms.

I am also adding the link to my GitHub repository where you can get the Jupyter Notebook: FDM-NonNewt.

Pls help us out. We are quite a bit out of our depth here.

π︎ 14
π°︎ r/CFD
π¬︎
π€︎ u/Abhisutar
π︎ Jan 23 2021
π¨︎ report
Volcanic ash behaving like a non-newtonian fluid
π︎ 252
π¬︎
π€︎ u/narasimhansr
π︎ Jan 19 2021
π¨︎ report
In non-Newtonian fluids, viscosity can change when under force to either more liquid or more solid. Applying lots of force to a balloon filled with non-Newtonian fluid with a golf ball shot out of a propane cannon at over 300 ft/sec yields lots of solid chunks, demonstrating this property.
π︎ 60
π¬︎
π€︎ u/RampChurch
π︎ Dec 19 2020
π¨︎ report
Non-Newtonian fluids turn into solids when pressure is applied. v.redd.it/yovso62qv3u51
π︎ 413
π°︎ r/oddlysatisfying
π¬︎
π€︎ u/shrunkmold
π︎ Oct 20 2020
π¨︎ report
Non-Newtonian fluids turn into solids when pressure is applied. v.redd.it/yovso62qv3u51
π︎ 295
π°︎ r/OddlyArousing
π¬︎
π€︎ u/phut-
π︎ Oct 20 2020
π¨︎ report
Volcanic ash behaving like a non-Newtonian fluid gfycat.com/remarkablenarrβ¦
π︎ 27k
π¬︎
π€︎ u/Thund3rbolt
π︎ Jun 27 2020
π¨︎ report
Volcanic ash behaving like a non-newtonian fluid
π︎ 4
π°︎ r/Sedimentology
π¬︎
π€︎ u/cursed2648
π︎ Jan 19 2021
π¨︎ report
Non-Newtonian fluid, the harder you press, thre harder it gets
π︎ 210
π°︎ r/Satisfyingasfuck
π¬︎
π€︎ u/EonMyst
π︎ Oct 24 2020
π¨︎ report
I wish semen was a non-Newtonian fluid, like oobleck or ketchup.
π︎ 2
π°︎ r/TheMonkeysPaw
π¬︎
π€︎ u/IhleNine
π︎ Dec 29 2020
π¨︎ report
In non-Newtonian fluids, viscosity can change when under force to either more liquid or more solid. Applying lots of force to a balloon filled with non-Newtonian fluid with a golf ball shot out of a propane cannon at over 300 ft/sec yields lots of solid chunks, demonstrating this property.
π︎ 79
π¬︎
π€︎ u/RampChurch
π︎ Dec 19 2020
π¨︎ report
Is non-newtonian fluid bulletproof? And if so why don't we use it for armour or protection?

Saw a post showing the main features of non-newtonian fluid and I just thought, surely if this was all around you constantly you'd be invincible.

π︎ 12
π¬︎
π€︎ u/huss7_10
π︎ Oct 23 2020
π¨︎ report
The best sports bra uses non-Newtonian fluid popsci.com/story/technoloβ¦
π︎ 43
π¬︎
π€︎ u/Sorin61
π︎ Oct 05 2020
π¨︎ report
Non-Newtonian fluid, the harder you press, the harder it gets v.redd.it/ovit72dkpxu51
π︎ 44
π°︎ r/oddlysatisfying
π¬︎
π€︎ u/Feesuat69
π︎ Oct 24 2020
π¨︎ report
Non-newtonian fluid in a hydraulic press
π︎ 79
π°︎ r/oddlysatisfying
π¬︎
π€︎ u/lemoneater8
π︎ Nov 04 2020
π¨︎ report
[#693|+359|25] Non-Newtonian fluid that does not follow Newton's law of viscosity [r/Physics] reddit.com/r/Physics/commβ¦
π︎ 2
π°︎ r/longtail
π¬︎
π︎ Dec 01 2020
π¨︎ report
Non-Newtonian fluids (a mixture of cornstarch and water) turn into solids when pressure is applied gfycat.com/bluebaggyaustrβ¦
π︎ 18k
π¬︎
π€︎ u/RTG-rohittugaya
π︎ Jan 12 2020
π¨︎ report
Non-Newtonian fluid, the harder you press, the harder it gets v.redd.it/ovit72dkpxu51
π︎ 30
π¬︎
π€︎ u/wanderingPIKApoo
π︎ Oct 24 2020
π¨︎ report
Non-Newtonian fluid turns into solid when pressure is applied. When water and cornstarch mixture is punched, cornstarch molecules come closer. When you move it slowly you allow cornstarch molecule to separate. v.redd.it/g3huqdujyqd51
π︎ 272
π°︎ r/VisualPhysics
π¬︎
π€︎ u/FunVisualPhysics
π︎ Jul 29 2020
π¨︎ report
Non-Newtonian fluid on subwoofer v.redd.it/p5i12e5batg51
π︎ 136
π°︎ r/oddlysatisfying
π¬︎
π€︎ u/MightyRed123
π︎ Aug 13 2020
π¨︎ report
Non-Newtonian Fluids Explained (aka Oobleck / Cornstarch & Water) youtube.com/watch?v=JGfynβ¦
π︎ 2
π°︎ r/videos
π¬︎
π€︎ u/beefwarrior
π︎ Oct 24 2020
π¨︎ report
Speed bump filled with a non-Newtonian fluid, designed such that cars going over the bump feel it only if they exceed the speed limit. gfycat.com/zealousadmiredβ¦
π︎ 57k
π¬︎
π€︎ u/wildwindsurfer
π︎ Apr 27 2019
π¨︎ report
Any liquid acts like a non-newtonian fluid if you hit it hard enough.
π︎ 14
π°︎ r/Showerthoughts
π¬︎
π€︎ u/testawayacct
π︎ Oct 02 2020
π¨︎ report
[#142|+8317|244] Non-Newtonian fluid, the harder you press, the harder it gets [r/nextfuckinglevel] reddit.com/r/nextfuckinglβ¦
π︎ 2
π°︎ r/longtail
π¬︎
π︎ Oct 23 2020
π¨︎ report
Non-Newtonian fluid, the harder you press, the harder it gets v.redd.it/ovit72dkpxu51
π︎ 2
π°︎ r/GeoVideos
π¬︎
π€︎ u/farmergreen2395
π︎ Oct 24 2020
π¨︎ report
Would a non-newtonian fluid work in a bulletproof vest?

I don't even know if that is a thing but would a bulletproof vest with non-newtonian fluid inside work? Is it even possibile to make one?

See a non-newtonian fluid gets harder the more force is put to it - so i think it's theoretically possible to stop anything at the point od impact. If making a vest pit of this fluid it would best defense ever.

π︎ 2
π¬︎
π€︎ u/muszyzm
π︎ Oct 24 2020
π¨︎ report
Dry Ice being Dropped into Non-Newtonian Fluid
π︎ 45
π¬︎
π€︎ u/AmerBekic
π︎ Sep 13 2020
π¨︎ report
Non-Newtonian fluid, the harder you press, the harder it gets v.redd.it/ovit72dkpxu51
π︎ 2
π°︎ r/u_EmmaAbbott96
π¬︎
π€︎ u/EmmaAbbott96
π︎ Oct 24 2020
π¨︎ report
Non-Newtonian fluid, the harder you press, the harder it gets
π︎ 3
π¬︎
π€︎ u/Apart_Garlic_5719
π︎ Oct 24 2020
π¨︎ report