نتایج جستجو برای: high weissenberg flow

تعداد نتایج: 2453664  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده فیزیک 1392

in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

Journal: :Fluids 2021

Effect of rheological property on the migration and alignment three interacting particles in Poiseuille flow Giesekus fluids is studied with direct-forcing fictitious domain method for Weissenberg number (Wi) ranging from 0.1 to 1.5, mobility parameter 0.7, ratio particle diameter channel height 0.2 0.4, solvent viscosity total being 0.3 initial distance (y0) centerline 0 0.2. The results showe...

Journal: :SIAM J. Scientific Computing 2010
David J. Knezevic Anthony T. Patera

In this paper we present a reduced basis method for the parametrized Fokker–Planck equation associated with evolution of Finitely Extensible Nonlinear Elastic (FENE) dumbbells in a Newtonian solvent for a (prescribed) extensional macroscale flow. There are two new important ingredients: a projection–based POD–Greedy sampling procedure for the stable identification of optimal reduced basis space...

Journal: :Journal of Rheology 2021

We use Brownian dynamics (BD) simulations and single molecule experiments to investigate the influence of topological constraints hydrodynamic interactions on rheology solutions ring-linear polymer blends at overlap concentration. find agreement between simulation experiment in which rings solution exhibit large conformational fluctuations. A subpopulation shows extension overshoots startup flo...

Journal: :CFD Letters 2023

The theme of this model is to examine the characteristics heat and mass transfer flow through stretching sheet along with magnetic field thermal radiation utilizing Al2O3+CuO/SA Williamson hybrid nanofluid. transformed partial differential equations are solved by Keller-Box method. numerical outcomes physical quantities revealed graphs tables. Nusselt number, skin friction, velocity temperature...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2004

Journal: :The Journal of the Society of Chemical Industry, Japan 1959

2008
Charles R. Doering Bruno Eckhardt Jörg Schumacher

Energy theory for incompressible Newtonian fluids is, in many cases, capable of producing strong absolute stability criteria for steady flows. In those fluids the kinetic energy naturally defines a norm in which perturbations decay monotonically in time at sufficiently low (but nonzero) Reynolds numbers. There are, however, at least two obstructions to the generalization of such methods to Oldr...

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