Question

The mu(I) (“myoo-one”) rheology describes the flow of these systems in a similar manner to that of complex fluids. For 10 points each:
[10m] In the Brazil nut effect, large particles tend to rise up through what systems? They are composed of many small macroscopic particles.
ANSWER: granular systems [or granular flows; prompt on grains; prompt on examples of granular systems, such as sand]
[10e] The Brazil nut effect is often called the granular version of this process, in which density or temperature differences cause motion via “currents” or “cells” within a fluid.
ANSWER: convection [or word forms of convecting; accept granular convection or convection currents or convection cells]
[10h] In a 2008 paper, Rietz and Stannarius studied granular convection for low values of this number, which exceeds one for a supercritical flow. It equals velocity over the square root of the product of little g and a length scale.
ANSWER: Froude (“frood”) number [or Fr]
<Physics>

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Data

TeamOpponentPart 1Part 2Part 3Total
Berkeley BCornell B010010
Chicago AIndiana010010
Chicago BMinnesota A010010
Chicago DMcGill0000
Claremont CollegesToronto B010010
Columbia BArizona State010010
Cornell ATexas010010
DukeOttawa0000
Georgia TechBerkeley A0101020
Iowa StateMaryland010010
Johns HopkinsNorthwestern010010
MichiganIllinois010010
Minnesota BChicago C010010
NYUBrown010010
North Carolina APurdue1010020
North Carolina BSouth Carolina010010
PennRutgers010010
Truman StateKentucky0000
VanderbiltHarvard0000
VirginiaWUSTL B010010
WUSTL AStanford010010
WaterlooColumbia A1010020
Yale AToronto A010010
Yale BFlorida010010

Summary

TournamentEditionExact Match?HeardPPBEasy %Medium %Hard %
2024 ACF Nationals04/21/2024Y249.5883%8%4%