期刊
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
卷 298, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jnnfm.2021.104668
关键词
Oldroyd-B; Convected time-derivative; Microstructure; Elastic-dumbbell; FENE
类别
The study examines Oldroyd's 1950 paper on rheological equations, introducing upper and lower convected time-derivatives, and the Oldroyd-A and Oldroyd-B model fluids. The choice between the A and B models is discussed based on micro-structural studies, suggesting something in between is appropriate. Finally, refinements are explored in terms of the elastic-dumbbell model.
We examine Oldroyd's 1950 paper On the Formulation of Rheological Equations of State (Oldroyd, 1950) in which he introduced the upper and lower convected time-derivatives, along with the Oldroyd-A and Oldroyd-B model fluids. Those developments are placed in context of prior ideas and his own subsequent papers on constitutive equations. The choice between the A and B models is addressed by looking at micro-structural studies, finding that something in between is appropriate. Finally some refinements are discussed in terms of the elastic-dumbbell model.
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