Modelling and simulation strategies for fluid-structure-interactions of highly viscous thermoplastic melt and single fibres – A numerical study

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Abstract

A virtual test setup for investigating single fibres in a transverse shear flow based on a parallel-plate rheometer is presented. The investigations are carried out to verify a numerical representation of the fluid–structure interaction (FSI), where Arbitrary Lagrangian–Eulerian (ALE) and computational fluid dynamics (CFD) methods are used and evaluated. Both are suitable to simulate flexible solid structures in a transverse shear flow. Comparative investigations with different model setups and increasing complexity are presented. It is shown, that the CFD method with an interface-based coupling approach is not capable of handling small fibre diameters in comparison to large fluid domains due to mesh dependencies at the interface definitions. The ALE method is more suited for this task since fibres are embedded without any mesh restrictions. Element types beam, solid, and discrete are considered for fibre modelling. It is shown that the beam formulation for ALE and 3D solid elements for the CFD method are the preferred options.

Details

OriginalspracheEnglisch
Aufsatznummer7241
Seitenumfang28
FachzeitschriftMaterials
Jahrgang15
Ausgabenummer20
PublikationsstatusVeröffentlicht - 17 Okt. 2022
Peer-Review-StatusJa

Externe IDs

Scopus 85140962881
Mendeley c2a155a7-2b71-35ef-b54f-fadd7ffafb48

Schlagworte

Schlagwörter

  • fluid–structure-interaction (FSI), finite element analysis (FEA), hermoplastic, composite, Arbitrary Lagrange–Eulerian (ALE), flow, fibre, fluid-structure-interaction (FSI), thermoplastic