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- W4367591872 abstract "We carry out direct numerical simulation together with an adhesive discrete element method calculation (DNS-DEM) to investigate the agglomeration of particles in homogeneous isotropic turbulence (HIT). Based on extensive simulation runs, an adhesion parameter is constructed to quantify the possibility of the occurrence of sticking, rebound, and breakage events. We report an exponential-form scaling for the size distribution of the early-stage agglomerates, which is valid across a wide range of particle inertia and interparticle adhesion values. An agglomeration kernel is then constructed containing the information on agglomerate structures and the sticking probability. The collision-induced breakage rate is then formulated based on the Smoluchowski equation and a breakage fraction. The breakage fraction, defined as the fraction of collisions that result in breakage, is then analytically estimated by a convolution of the probability distribution of collision velocity and a universal transfer function. Moreover, the role of the flow structure in the collision-induced breakage is also examined. Violent collisions and breakages are more likely caused by particles ejected rapidly from strong vortices and happen in straining sheets. Our results extend the findings of particle collisions and shear-induced fragmentation, forming a more complete picture of the breakage of agglomerates in turbulent flows." @default.
- W4367591872 created "2023-05-02" @default.
- W4367591872 creator A5002319878 @default.
- W4367591872 date "2023-01-01" @default.
- W4367591872 modified "2023-09-24" @default.
- W4367591872 title "Agglomeration of Microparticles in Homogenous Isotropic Turbulence" @default.
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- W4367591872 doi "https://doi.org/10.1007/978-981-16-0843-8_3" @default.
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