Coarsening of solid-liquid mixtures in a random acceleration field

Physics of Fluids

Volumn 9, Issue 5, 1997, Pages 1336-1343

  Thomson, J Ross ^a   Casademunt, Jaume ^b   Drolet, François ^a   Viñals, Jorge ^a,c  

^a FLORIDA STATE UNIVERSITY   (United States)

^b UNIVERSITY OF BARCELONA   (Spain)

^c FAMU FSU COLLEGE OF ENGINEERING   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACCELERATORS; MODELLING-MATHEMATICAL; TWO-PHASE FLOW(LIQUID/SOLID);

EID: 0030774563     PISSN: 10706631     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.869259     Document Type: Article

References (31)

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24. -4 cm/s)=24.8 cm larger than the dimensions of the container. Hence the motion of the fluid surroundind the particles is overdamped, and statisfies the equation for Stokes flow driven by the instantaneous velocity of the particles.
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29. It is important to emphasize the relevance of overdamped motion to the results presented. If the correlation time of the fluctuating force is smaller than the viscous decay time (as is the case in thermal Brownian motion). the fluctuating force enters additively in the euqations of motion for the particles and the effects discussed do not arise. In the present case, however, the viscous decay time is 1/260 s mush smaller than tha correlation time of the effective acceleration field. In this limit, the fluctuating component enters multiplicatively and leads to an averege attraction at long distances (but still shorter than the visous decay length), and repulsion at short distances.
30. There is no large scale (low wave number) motion as in the case of turbulent flow. The Reynolds number is typically much smaller than unity.
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