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Modeling Turbulent Flow of Non-Newtonian Fluids Using Generalized Newtonian Models
Volume 2: CFD and VIV, 2015Computational Fluid Dynamic (CFD) is used to model turbulent flow of non-Newtonian polymeric fluids in concentric annulus. The so called Generalized Newtonian Fluid (GNF) approach is used. Four turbulence models are tested. Applicability of each model in predicting turbulent flow of non-Newtonian fluids in annulus is assessed by comparing results of ...
Majid Bizhani, Ergun Kuru
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Analysis of Generalized Newtonian Fluids
2013In this paper we want to present an optimal existence result for the steady motion of generalized Newtonian fluids. Moreover, we present an optimal error estimate for a FEM approximation of the corresponding steady p-Stokes system. The presented results are based on long lasting cooperations with L. Berselli, L. Diening, J. Malek, A. Prohl and J. Wolf.
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Generalized Newtonian fluid flow through fibrous porous media
AIP Conference Proceedings, 2016The numerical calculations of the velocity field and the component of transverse permeability in the filtration equation for steady, incompressible flow of the generalized Newtonian fluid through the assemblages of cylindrical fibers are presented in this paper. The fibers are arranged regularly in arrays. Flow is transverse with respect to the fibers.
Magdalena Mierzwiczak +2 more
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Generation of inkjet droplet of non-Newtonian fluid
Rheologica Acta, 2013In this study, the generation of inkjet droplets of xanthan gum solutions in water–glycerin mixtures was investigated experimentally to understand the jetting and drop generation mechanisms of rheologically complex fluids using a drop-on-demand inkjet system based on a piezoelectric nozzle head.
Hansol Yoo, Chongyoup Kim
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A generalized velocity distribution for non‐Newtonian fluids
AIChE Journal, 1961AbstractThe universal velocity profile equation for turbulent flow is obtained for the power law approximation equation. The profile equation should be valid from wall to the center line, from laminar to turbulent flow, and for Newtonian and non‐Newtonian power law materials. The equation is compared with other theoretical and experimental results.
R. S. Brodkey, Jon Lee, R. C. Chase
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A stability theorem for general non-Newtonian fluid
Applied Scientific Research, 1963A theorem concerning the stability of a particular non-Newtonian fluid has been proved by Genesky1). In the present paper, we have taken a more general non-Newtonian fluid characterized by the relation $$T = - pI + \alpha _1 A_1 + \alpha _2 A_2 + \alpha _3 A_{1^2 } $
Kapur, J., Goel, S.
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SIMULATION OF GENERALIZED NEWTONIAN FLUIDS WITH THE LATTICE BOLTZMANN METHOD
International Journal of Modern Physics C, 2007This paper proposes a study of the computational efficiency of a lattice Boltzmann model (LBM) solver to simulate the behavior of a generalized Newtonian fluid. We present recent progress concerning a 4-1 planar contraction considering a power-law and a Carreau-law model.
Malaspinas, Orestis +2 more
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Bifurcation phenomena of generalized newtonian fluids in curved rectangular ducts
Journal of Non-Newtonian Fluid Mechanics, 1986The bifurcation phenomenon in flow through a curved rectangular duct is investigated in this study. The nonlinear equations of motion governing the steady, fully developed laminar flow of an incompressible generalized Newtonian fluid have been solved numerically. Extensive results have been generated in an effort to map the regions of multiple solution
Shanthini, W., Nandakumar, K.
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Numerical simulation of generalized Oldroyd-B and generalized Newtonian fluid flows
Computing, 2013This paper is dealing with numerical simulation of generalized Newtonian and generalized Oldroyd-B fluids with the aim of blood flow simulation. The Newtonian model of a fluid cannot capture all the phenomena in many fluids with complex microstructure, such as polymers, suspensions (also many biological fluids) and granular materials.
Vladimír Prokop, Karel Kozel
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Modeling of generalized Newtonian fluid flow at a fluid-porous interface
AIP Conference Proceedings, 2012This paper discusses the coupling of the momentum and the Brinkman equations for generalized Newtonian fluids for modeling laminar viscous flow over a porous surface. An analytical model was derived for a Herschel-Bulkley fluid traversing a composite domain consisting of an open channel and an infinite wide porous domain.
Marèt Cloete, Francois Smit
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