Numerical simulation of generalized Oldroyd-B and generalized Newtonian fluid flows

Computing ◽  
2013 ◽  
Vol 95 (S1) ◽  
pp. 587-597
Author(s):  
Vladimír Prokop ◽  
Karel Kozel
Keyword(s):  
Numerical Simulation ◽  
Newtonian Fluid ◽  
Fluid Flows ◽  
Generalized Newtonian Fluid

Flow of Viscoplastic Fluids Through an Expansion Followed by a Contraction

2003 ◽  
Author(s):  
Luiz A. Reis ◽  
Moˆnica F. Naccache
Keyword(s):  
Numerical Simulation ◽  
Fluid Flows ◽  
Viscoplastic Fluid ◽  
Industrial Processes ◽  
Generalized Newtonian Fluid ◽  
Viscoplastic Fluids ◽  
Viscosity Function ◽  
Material Fracture ◽  
Volume Method ◽  
Newtonian Behavior

Flow of viscoplastic fluids through contractions and expansions are found in several industrial processes. Experimental results show that in this kind of flow a material fracture can occur in certain conditions. In this work, a numerical simulation of a viscoplastic fluid flows through an axysimetric expansion followed by a contraction is performed. One of the goals is to observe if the constitutive model used in the numerical simulation can predict this kind of pattern. The numerical solution of conservation equations of mass and momentum is obtained via finite volume method. In order to model the non-Newtonian behavior of the fluid, it is used the Generalized Newtonian Fluid constitutive equation, with the Carreau-Yasuda viscosity function. The results obtained show the influence of rheological and geometric parameters on flow patterns.

Uncertainty propagation in simulation predictions of generalized Newtonian fluid flows

2019 ◽  
Vol 271 ◽  
pp. 104138 ◽  
Author(s):  
Jaekwang Kim ◽  
Piyush K. Singh ◽  
Jonathan B. Freund ◽  
Randy H. Ewoldt
Keyword(s):  
Newtonian Fluid ◽  
Uncertainty Propagation ◽  
Fluid Flows ◽  
Generalized Newtonian Fluid

Numerical Simulation of Roll Waves in Newtonian Fluid Flows

2019 ◽  
Author(s):  
Caio Von Zuben Peres ◽  
Geraldo Maciel ◽  
Fabiana de Oliveira Ferreira
Keyword(s):  
Numerical Simulation ◽  
Newtonian Fluid ◽  
Fluid Flows ◽  
Roll Waves
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