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Clustering, fronts, and heat transfer in turbulent suspensions of heavy particles

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arxiv 1401.2080 v1 pith:DLU4YADZ submitted 2014-01-09 physics.flu-dyn nlin.CD

Clustering, fronts, and heat transfer in turbulent suspensions of heavy particles

classification physics.flu-dyn nlin.CD
keywords particlesheatfluxesheavypassiveturbulentadvectedanomalous
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Heavy inertial particles transported by a turbulent flow are shown to concentrate in the regions where an advected passive scalar, such as temperature, displays very strong front-like discontinuities. This novel effect is responsible for extremely high levels of fluctuations for the passive field sampled by the particles that impacts the heat fluxes exchanged between the particles and the surrounding fluid. Instantaneous and averaged heat fluxes are shown to follow strongly intermittent statistics and anomalous scaling laws.

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