In this paper, the log-conformation representation method (LCR) is applied in an orthogonal curvilinear coordinate system to study the Giesekus fluid flow in a curved duct. Derivations for evolution equations of LCR in this curvilinear coordinate system are presented. Secondary flow patterns and oscillation solutions are computed by using the collocation spectral method. The influence of a wide range of Dean number, Weissenberg number, and dimensionless mobility parameter α on fluid behaviors is studied. A six-cell secondary flow pattern is found under very low Dean number and relatively high Weissenberg number and α. Moreover, both Weissenberg number and α are able to facilitate the development of the secondary flow. In addition, simulations under critical Reynolds number for oscillation imply that Giesekus fluid flow with is not able to retain a four-cell secondary flow pattern in a steady state, which is different from Newtonian fluids.
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October 2022
Research Article|
October 18 2022
Parametric study of the Giesekus fluid flow in a curved duct with square cross section
Special Collection:
One Hundred Years of Giesekus
Shihan Guo (郭世涵)
;
Shihan Guo (郭世涵)
(Investigation, Methodology, Software, Writing – original draft, Writing – review & editing)
School of Mathematics and Physics, University of Science and Technology Beijing
, Beijing 100083, China
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Xinhui Si (司新辉)
Xinhui Si (司新辉)
a)
(Funding acquisition, Methodology, Project administration, Supervision, Writing – review & editing)
School of Mathematics and Physics, University of Science and Technology Beijing
, Beijing 100083, China
a)Author to whom correspondence should be addressed: sixinhui_ustb@126.com
Search for other works by this author on:
a)Author to whom correspondence should be addressed: sixinhui_ustb@126.com
Note: This paper is part of the special topic, One Hundred Years of Giesekus.
Physics of Fluids 34, 103107 (2022)
Article history
Received:
August 07 2022
Accepted:
September 13 2022
Citation
Shihan Guo, Xinhui Si; Parametric study of the Giesekus fluid flow in a curved duct with square cross section. Physics of Fluids 1 October 2022; 34 (10): 103107. https://doi.org/10.1063/5.0119071
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