info:eu-repo/semantics/article
Preferential Concentration of Free-Falling Heavy Particles in Turbulence
Fecha
2020-08Registro en:
Falkinhoff, F.; Obligado, M.; Bourgoin, M.; Mininni, Pablo Daniel; Preferential Concentration of Free-Falling Heavy Particles in Turbulence; American Physical Society; Physical Review Letters; 125; 6; 8-2020; 1-5
0031-9007
CONICET Digital
CONICET
Autor
Falkinhoff, F.
Obligado, M.
Bourgoin, M.
Mininni, Pablo Daniel
Resumen
We present a sweep-stick mechanism for heavy particles transported by a turbulent flow under the action of gravity. Direct numerical simulations show that these particles preferentially explore regions of the flow with close to zero Lagrangian acceleration. However, the actual Lagrangian acceleration of the fluid elements where particles accumulate is not zero, and has a dependence on the Stokes number, the gravity acceleration, and the settling velocity of the particles.