[HN Gopher] An Injection of Chaos Solves Decades-Old Fluid Mystery
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       An Injection of Chaos Solves Decades-Old Fluid Mystery
        
       Author : escot
       Score  : 39 points
       Date   : 2022-01-05 16:41 UTC (6 hours ago)
        
 (HTM) web link (www.quantamagazine.org)
 (TXT) w3m dump (www.quantamagazine.org)
        
       | rileyphone wrote:
       | I'm surprised the article didn't draw an analogy to a traffic
       | jam. The counterintuitive response of decreased throughput from
       | increased flow reminds me of
       | https://en.wikipedia.org/wiki/Braess's_paradox
        
       | R0b0t1 wrote:
       | This just means they are subbing out simulation details for
       | injected randomness, no? I thought this was a technique that was
       | known to work in general.
       | 
       | I.e. since the combination of many random events is a bell curve
       | if you just put a bell curve somewhere you don't understand
       | something you can get good results.
        
       | pomian wrote:
       | Cool article. The linked paper has more details, and math. "
       | energy dissipated by pore-scale fluctuations generates the
       | anomalous increase in the overall flow resistance." Unfortunately
       | they are still at the stage of defining that it happens, not,
       | why? Which is interesting - there is still so much to learn!
       | https://www.science.org/doi/10.1126/sciadv.abj2619
        
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       (page generated 2022-01-05 23:01 UTC)