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Multiscale modeling of fluid turbulence and flocculation in fiber suspensions

Jafari, A ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1063/1.2218034
  3. Publisher: 2006
  4. Abstract:
  5. A mathematically rigorous, multiscale modeling methodology capable of coupling behaviors from the Kolmogorov turbulence scale through the full scale system in which a fiber suspension is flowing is presented. Here the key aspect is adaptive hierarchical modeling. Numerical results are presented focus of which are on fiber floe formation and destruction by hydrodynamic forces in turbulent flows. Specific consideration was given to molecular-dynamics simulations of viscoelastic fibers in which the fluid flow is predicted by a method which is a hybrid between direct numerical simulations and large eddy simulation techniques, and fluid fibrous structure interactions were taken into account. The present results may elucidate the physics behind the breakup of a fiber floe, opening the possibility for developing a meaningful numerical model of the fiber flow at the continuum level where an Eulerian multiphase flow model can be developed for industrial use. © 2006 American Institute of Physics
  6. Keywords:
  7. Adaptive systems ; Computer simulation ; Hierarchical systems ; Hydrodynamics ; Mathematical models ; Molecular dynamics ; Numerical analysis ; Suspensions (components) ; Turbulent flow ; Viscoelasticity ; Fiber suspensions ; Fluid turbulence ; Multiscale modeling ; Viscoelastic fibers ; Flow of fluids
  8. Source: Journal of Applied Physics ; Volume 100, Issue 3 , 2006 ; 00218979 (ISSN)
  9. URL: https://aip.scitation.org/doi/10.1063/1.2218034