Non-isothermal simulation of a corner vortex within entry flow for a viscoelastic fluid
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Huan-Chang Tseng
Abstract
A modified White-Metzner viscoelastic constitutive equation is incorporated into the state-of-the-art Three Dimensional Computational Fluid Dynamics (3D-CFD) framework for performing isothermal and non-isothermal entry flow simulations of a polymer melt. As a result, the corner vortex becomes smaller with increased isothermal temperature, namely, the so-called temperature-induced vortex reduction. In addition, the vortex grows with raising wall temperatures, whereas the vortex reduction is found under high inlet temperatures. Through the visualized flow patterns, it is significant to investigate the dramatic variations of vortex size in relation to fluid temperature, weighted viscosity and extension rate, as well as Weissenberg number and Trouton ratio.
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Author contributions: The author has accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The author declares no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Research Articles
- Experimental investigation and simulation of 3D printed sandwich structures with novel core topologies under bending loads
- Notable electrical and mechanical properties of polyacrylamide (PAM) with graphene oxide (GO) and single-walled carbon nanotubes (SWCNTs)
- Study on the thermal stability and combustion performance of polyurethane foams modified with manganese phytate
- Improving the rheology of linear low-density polyethylene (LLDPE) and processability of blown film extrusion using a new binary processing aid
- Stereocomplex formation of a poly(D-lactide)/poly(L-lactide) blend on a technical scale
- Experimental investigation on mechanical and tribological characteristics of snake grass/sisal fiber reinforced hybrid composites
- Tensile properties of sandwich-designed carbon fiber filled PLA prepared via multi-material additive layered manufacturing and post-annealing treatment
- Non-isothermal simulation of a corner vortex within entry flow for a viscoelastic fluid
- Feasibility assessment of injection molding online monitoring based on oil pressure/nozzle pressure/cavity pressure
- Modelling of roller conveyor for the simulation of rubber tire tread extrusion
- Reactive compatibilization of polypropylene grafted with maleic anhydride and styrene, prepared by a mechanochemical method, for a blend system of biodegradable poly(propylene carbonate)/polypropylene spunbond nonwoven slice
- Effect of stacking sequence and thickness variation on the thermo-mechanical properties of flax-kenaf laminated biocomposites and prediction of the optimal configuration using a decision-making framework
- Design and manufacture of an additive manufacturing printer based on 3D melt electrospinning writing of polymer
