Flow-History-Dependent Behavior of Entangled Polymer Melt Flow Analyzed by Multiscale Simulation

Finite Element Simulation and Error Estimation of Polymer Melt Flow

Accuracy analysis is fundamental to ascertain the reliability of a numerical solution of any industrial operation. The analysis is often complex due to different error sources. In this work, two strategies to assess the discretization errors is discussed: (i) Richardson extrapolation and (ii) a posteriori error estimation based on projecting/smoothing techniques. The former utilises three neste...

Entangled chain dynamics of polymer knots in extensional flow.

We formulate a coarse-grained molecular-dynamics model of polymer chains in solution that includes hydrodynamic interactions, thermal fluctuations, nonlinear elasticity, and topology-preserving solvent mediated excluded volume interactions. The latter involve a combination of potential forces with explicit geometric detection and tracking of chain entanglements. By solving this model with numer...

Multiscale Flow Simulation by Adaptive Finite Volume Particle Methods

We report on recent developments concerning adaptive finite particle methods, which are used for the numerical simulation of multiscale phenomena in time-dependent evolution processes. The proposed concept relies on a finite volume approach, which we combine with WENO reconstruction from particle average values. In this method, polyharmonic splines are key tools for both the optimal recovery fr...

effect of sub-grid scales on large eddy simulation of particle deposition in a turbulent channel flow

چکیده ندارد.

From Elastic Deformation to Terminal Flow of a Monodisperse Entangled Melt in Uniaxial Extension