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22 results on '"Keslerová, Radka"'

6. Numerical Simulation of 3D Flow of Viscous and Viscoelastic Fluids in T-Junction Channel

Author

Keslerová, Radka, Trdlička, David, Barth, Timothy J., Series editor, Griebel, Michael, Series editor, Keyes, David E., Series editor, Nieminen, Risto M., Series editor, Roose, Dirk, Series editor, Schlick, Tamar, Series editor, Karasözen, Bülent, editor, Manguoğlu, Murat, editor, Tezer-Sezgin, Münevver, editor, Göktepe, Serdar, editor, and Uğur, Ömür, editor

Published
2016
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16. Numerical study of viscous and viscoelastic fluids flow

Author

Keslerová, Radka and Kozel, Karel

Subjects
Physics::Fluid Dynamics, Oldroyd-B fluids, Navier-Stokes equations, generalized Newtonian fluids
Abstract

In this paper the numerical results for steady and unsteady flows of viscous and viscoelastic fluids are presented. The governing system of equations is based on the system of balance laws for mass and momentum for incompressible fluid. Two rheological models for the stress tensor are tested. The models used in this study are generalized Newtonian model with power-law viscosity model and Oldroyd-B model with constant viscosity. Numerical results for these models are presented.

Published
2012

22. Numerical modeling of the flow structures in the channels with T-junction.

Author

Benesˇ, Ludeˇk, Louda, Petr, and Keslerová, Radka

Subjects
COMPUTER simulation, MATHEMATICAL models of turbulence, CROSS-sectional method, NUMERICAL solutions to Navier-Stokes equations, REYNOLDS stress, PARTIAL differential equations, FINITE volume method
Abstract

The work deals with the numerical simulations of a 3D incompressible viscous turbulent flow in the branched channels with circular cross section. The mathematical model is based on the unsteady Reynolds averaged Navier-Stokes (URANS) equations with the explicit algebraic Reynolds stress (EARSM) turbulence model. The resulting set of partial differential equations is then solved by artificial compressibility method in dual time in the finite volume formulation. The flow through the round branched channel with branch perpendicular to the main channel (T-junction) is considered. Diameter of the main channel is 50mm and diameter of the branch is 32mm. Different combinations of inlets and outlets and different flow rates are studied. [ABSTRACT FROM AUTHOR]

Published
2012
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