Characterization of melt-mixing in extrusion: Finite-time Lyapunov exponent and flow pattern structure

Autor:	Toshihisa Kajiwara, Yasuya Nakayama, Takeuchi Takahide, Koichi Kimura, Hideki Tomiyama, Takemitsu Hiroki
Rok vydání:	2019
Předmět:	Mathematics::Dynamical Systems Materials science Computer simulation Structure (category theory) Lyapunov exponent Mechanics Characterization (materials science) Nonlinear Sciences::Chaotic Dynamics symbols.namesake Distributive property Flow (mathematics) symbols Extrusion Mixing (physics)
Zdroj:	AIP Conference Proceedings.
ISSN:	0094-243X
DOI:	10.1063/1.5088290
Popis:	We discuss the mixing characteristics of different kneading blocks based on the numerical simulation of non-isothermal polymer melt flow. The distributive and dispersive mixing is assessed by using finite-time Lyapunov exponent and the mean stress during residence. In addition, the flow patterns associated with the different geometry of the mixing elements are quantified by the strain-rate state. Our approach is found to be useful to evaluate essential difference of mixing characteristics between the conventional kneading discs element and pitched-tip kneading discs elements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9583afd2d29be4b783f901d93815c911 https://doi.org/10.1063/1.5088290 Zobrazit plný text záznamu