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Showing 1 to 7 of 7 for “"Contraction Flow"”.
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Stress- and velocity-field evolution in viscoelastic planar contraction flow dc by Lars Herbert Genieser.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1997.
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Numerical Predictions of Flow-Induced Fiber Orientation in Three-Dimensional Geometries
… Calculations were performed for axisymmetric contraction flow, axisymmetric expansion flow, and radially diverging flow in a thin cavity. For the axisymmetric contraction and expansion, the flow patterns for the fiber suspension and for the suspending fluid alone were distinctly different. …
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Development of an efficient finite volume computational platform for the simulation of complex flows of complex fluids governed by the Rolie-Poly model
The flow of non-Newtonian fluids, also known as complex fluids, is an important area of fluid mechanics due to their applications in industries such as food processing, mining, chemical and plastic industries. It is therefore essential to understand the flow and general behaviour of such fluids. …
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The Shear and Extensional Rheology of Polymer Dispersions
… process involving the complex formulations and flow regimes, it is ideal to understand the rheology in the shear and extensional regime over a range of shear rates. It is also essential to understand the interactions within the fluid and its impact on the rheology of the fluid. The topic of …
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Flow Behavior of Sparsely Branched Metallocene-Catalyzed Polyethylenes
… and the ability to accurately predict the flow through an abrupt 4:1 contraction geometry. The effects that sparse long-chain branching (M<sub>branch</sub> > M<sub>c</sub>) has on the shear and extensional rheological properties are analyzed in two separate treatments. The first focuses on …
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Finite element simulation of viscoelastic flow: effect of the rheological model and the mesh
The numerical simulation of viscoelastic flows was studied in this work. In particular the effect of mesh refinement on the quality and the convergence of the finite element method was examined, as well as the differences that may be found by using several rheological models to describe the …
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Numerical studies of Newtonian and viscoelastic fluids
… (DNS) approach is used to understand the flow behavior of Newtonian and viscoelastic fluids in porous materials, four-to-one contraction and the flow of a Newtonian fluid past an airfoil. In simulations the viscoelastic fluid is modeled by the finitely extensible nonlinear elastic (FENE) …