ELFT HÍRADÓ

[StatFizSzeminar <statfiz AT glu.elte.hu>]

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                    ELTE TTK Fizikai Intézet
                STATISZTIKUS FIZIKAI SZEMINÁRIUM


                       2016. december 7.
                        szerda, 11 óra

                        Ksenia Guseva

         Theoretical Physics/Complex Systems, ICBM, 
                  University of Oldenburg

"Aggregation-fragmentation dynamics in random flows: from 
           tracers to inertial aggregates"


We investigate aggregation-fragmentation dynamics of tracers 
and inertial monomers (unit particles) in random flows. We use 
an individual-particle-based model, where each aggregate is 
characterized by a position, a velocity and a size. The 
dynamics consists of three steps: aggregates move advected by 
the fluid, they aggregate upon collisions and they fragment due 
to forces exerted by the flow field. We are interested in 
properties of the steady-state of this system, when aggregation 
and fragmentation dynamics balance each other. We compare the 
steady-state size distributions formed by tracers and by 
inertial aggregates. Finally, we analyze the scaling of the 
size distribution --- with respect to the resistance of 
aggregates and the dilution of the suspension --- for ensembles 
of monomers with different inertial properties.


     1117 Budapest, Pázmány P. sétány 1/A, Északi tösmb 2.54
                honlap: http://glu.elte.hu/~statfiz

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