Multiscale Lagrangian Fluid Dynamics Simulation for Polymeric Fluid

Abstract

We have developed a simulation technique of multiscale Lagrangian fluid dynamics to tackle hierarchical problems relating to historical dependency of polymeric fluid. We investigate flow dynamics of dilute polymeric fluid by using the multiscale simulation approach incorporating Lagrangian particle fluid dynamics technique (the modified smoothed particle hydrodynamics) with stochastic coarse-grained polymer simulators (the dumbbell model). We have confirmed that our approach is nicely in agreement with the macroscopic results obtained by a constitutive equation corresponding to the dumbbell model, and observed microscopic thermal fluctuation appears in macroscopic fluid dynamics as dispersion phenomena.

20 pages, 5 figures, Journal of Polymer Science Part B: Polymer Physics (accepted)

References in corpus (1)

• A Model for Hybrid Simulations of Molecular Dynamics and CFD

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• Synchronized molecular dynamics simulation via macroscopic heat and momentum transfer: an application to polymer lubrication
• Synchronized molecular dynamics method for thin-layer flows of complex fluids