کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
670600 | 1459043 | 2013 | 7 صفحه PDF | دانلود رایگان |
In the last decade considerable interest has emerged in understanding and modeling the flow behavior of concentrated wormlike micellar solutions. A significant advance was made through the two-species modeling approach originally proposed by Vasquez, Cook, and McKinley. In the present work we revisit their model from a nonequilibrium thermodynamic perspective. By employing an extension to the nonequilibrium treatment of chemical reaction kinetics for media with an internal structure, we develop a thermodynamic model that closely resembles the one based on more ad hoc assumptions. Thus, we not only validate that model, but now also have a mechanism to systematically produce further refinements. One particular refinement, namely, the inclusion of an additional intermediate length species, is explored.
► We revisit the VCM model from a nonequilibrium thermodynamic perspective.
► The theory of reaction kinetics is extended to viscoelastic multicomponent systems.
► The new model has fewer parameters and predicts a nonmonotonic stress–strain curve.
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 196, June 2013, Pages 51–57