ENTRAINMENT AND RESUSPENSION MODELING FOR SMALL INERTIAL PARTICLES IN WALL-BOUNDED TURBULENT FLOW. Hu, R., Johnson, P., L., & Meneveau, C. Technical Report
ENTRAINMENT AND RESUSPENSION MODELING FOR SMALL INERTIAL PARTICLES IN WALL-BOUNDED TURBULENT FLOW [pdf]Paper  abstract   bibtex   
Particle entrainment into turbulent boundary layer flow is a phenomenon of great importance to many environmental and industrial processes, e.g. dust particle entrainment into the atmosphere. In this study, we extend a dynamic re-suspension model for applicability to rough surfaces with multiscale roughness elements, and couple it with a DNS database of turbulent channel flow to track particle trajecto-ries. The study aims at isolating the physical mechanisms for small inertial particle resuspension by near-wall turbulence and particle interactions with small surface roughness elements. Secondly, a simple stochastic model is developed as particle subgrid-scale (SGS) model combined with spatially filtered turbulent flow fields. Good agreements between coarse-grained simulations and DNS results have been obtained.
@techreport{
 title = {ENTRAINMENT AND RESUSPENSION MODELING FOR SMALL INERTIAL PARTICLES IN WALL-BOUNDED TURBULENT FLOW},
 type = {techreport},
 id = {471c229a-7970-3e04-9f84-7cb96430c41b},
 created = {2020-05-26T18:51:32.041Z},
 accessed = {2020-05-26},
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 abstract = {Particle entrainment into turbulent boundary layer flow is a phenomenon of great importance to many environmental and industrial processes, e.g. dust particle entrainment into the atmosphere. In this study, we extend a dynamic re-suspension model for applicability to rough surfaces with multiscale roughness elements, and couple it with a DNS database of turbulent channel flow to track particle trajecto-ries. The study aims at isolating the physical mechanisms for small inertial particle resuspension by near-wall turbulence and particle interactions with small surface roughness elements. Secondly, a simple stochastic model is developed as particle subgrid-scale (SGS) model combined with spatially filtered turbulent flow fields. Good agreements between coarse-grained simulations and DNS results have been obtained.},
 bibtype = {techreport},
 author = {Hu, Ruifeng and Johnson, Perry L and Meneveau, Charles}
}
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