How to make a miniature river
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- Опубліковано 26 чер 2024
- What if we recreated rivers in the lab, to better understand them in real life? 🏞️ This the PhD work of Anaïs Abramian! She takes us on a tour of this model experiment, at the crossroads between physics and geology!
↓ More infos and links in the description! ↓
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LINKS:
French version: • Une rivière en miniature
Subscribe to the channel : / thelutetiumproject
Follow us on Twitter : / theluproject
Visit our website: www.lutetium.paris/en
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MORE ABOUT THE INTERVIEWEE:
Anaïs Abramian is an alumna of ENS Lyon. She obtained a master's degree in liquid state physics from École Normale Supérieure. She conducted her PhD thesis at Institut de Physique du Globe de Paris, as a member of the team of Geological Fluid Dynamics. She defended in 2018; her thesis was titled "Self-organisation of sediment transport in alluvial rivers." She then joined Institut Jean le Rond d'Alembert as a postdoctoral researcher in 2019. Her research now focuses on cohesive granular materials.
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RELATED ARTICLE:
Anaïs Abramian, Olivier Devauchelle , Grégoire Seizilles & Eric Lajeunesse, Boltzmann Distribution of Sediment Transport, Physical Review Letters, 123, 014501 (2019)
journals.aps.org/prl/abstract...
Anaïs Abramian, Olivier Devauchelle & Eric Lajeunesse, Streamwise streaks induced by bedload diffusion, Journal of Fluid Mechanics, 863, 601 (2019)
doi.org/10.1017/jfm.2018.1024
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VIDEO BREAKDOWN:
00:00 Different sizes, same flows
02:47 Making a river in the lab
05:02 A model experiment
06:43 Measuring the topography of the river
07:23 Refraction of light
08:28 Sediments shape rivers
10:37 Diffusion and Brownian motion
11:39 Nature and role of the diffusion of grains
13:56 From model experiments to real rivers
15:36 Conclusion
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CREDITS:
Host:
Guillaume Durey
Researcher:
Anaïs Abramian
Writers:
Guillaume Durey, Mathias Kasiulis
Director:
Hoon Kwon
Animator:
Benjamin Alardin
Sound editor:
Valentin Zorgnotti
Editors:
Kévin Lamothe, Guillaume Durey
Visual identity:
Juliette Nier
Theme music:
Pierre David
Produced by:
Guillaume Durey, Mathias Kasiulis
, Quentin Magdelaine
This video was shot on September 23rd, 2017.
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The Lutetium Project is a PSL students’ initiative conducted as part of IDEX ANR-10-IDEX-0001-02 PSL and funded by:
PSL Research University - www.univ-psl.fr
ESPCI Paris - www.espci.fr
Espace des sciences Pierre-Gilles de Gennes - www.espgg.org
ESPCI Alumni - espci.alumni.paris
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Some day i'll take a confortable seat, a big cigarretes box and i'll see the whole videos of Lutetium project again.
What an amazing project your chanel is! Very interesting and professional, your videos about microfluids were mesmerazing and informative. Congrats
AWESOME video! Keep up the great work!
Impressive Work !!
Further refinements of that experiment to study finer sediment flow and actually model meander behavior would be (will be?) great to see! I have enjoyed taking Google Earth to remote rivers of the world to follow them and see the remnants of all the meanders and oxbow lakes, and wonder at the timescales involved.
Beautiful!
So what tends to be the steady state ratio between width and depth compared to various particle sizes and water volumes?
Like, in this toy model, rivers only get a few centimeters wide even as steady state.
Do they regulate the viscosity of the liquid? I'd expect it to change somewhat as it picks up or loses water to the air.
Terima kasih
👌