Results 21 to 30 of about 910,115 (197)

On Generalized Newtonian Fluids in Curved Pipes [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2016
This paper is concerned with steady, fully developed motion of a Navier-Stokes fluid with shear-dependent viscosity in a curved pipe under a given axial pressure gradient. We establish existence and uniqueness results, derive appropriate estimates and prove a characterization of the secondary flows.
openaire   +3 more sources

Steady States of Anisotropic Generalized Newtonian Fluids [PDF]

open access: yesJournal of Mathematical Fluid Mechanics, 2005
We consider the stationary flow of a generalized Newtonian fluid which is modelled by an anisotropic dissipative potential f. More precisely, we are looking for a solution $u:\Omega \to \mathbb{R}^n ,\Omega \subset \mathbb{R}^n ,\,n = 2,3,$ of the following ...
Darya E. Apushkinskaya   +2 more
openaire   +1 more source

Examining virtual reality as a platform for developing mental models of industrial systems

open access: yesJournal of Computer Assisted Learning, Volume 39, Issue 1, Page 113-124, February 2023., 2023
Abstract Industrial systems can be complex and not intuitive to perceive. Therefore, students in technology and engineering programs can benefit from developing mental models of industrial systems during their journey in college. However, more often than not, these students do not have access to industrial facilities; thus, developing mental models for
Robert J. Slezaka   +5 more
wiley   +1 more source

The effects of assessment design on academic dishonesty, learner engagement, and certification rates in MOOCs

open access: yesJournal of Computer Assisted Learning, Volume 39, Issue 1, Page 141-153, February 2023., 2023
Abstract Background Massive Open Online Courses (MOOCs) have touted the idea of democratizing education, but soon enough, this utopian idea collided with the reality of finding sustainable business models. In addition, the promise of harnessing interactive and social web technologies to promote meaningful learning was only partially successful.
Giora Alexandron   +4 more
wiley   +1 more source

Optimality justifications and the optimality principle: New tools for foundation‐theoretic epistemology

open access: yesNoûs, Volume 56, Issue 4, Page 972-999, December 2022., 2022
Abstract The background of this paper (section 1) consists in a new account to foundation‐theoretic epistemology characterized by two features: (i) All beliefs are to be justified by deductive, inductive or abductive inferences from a minimalistic class of unproblematic (introspective or analytic) basic beliefs.
Gerhard Schurz
wiley   +1 more source

General Mechanism for the Meandering Instability of Rivulets of Newtonian Fluids [PDF]

open access: yesPhysical Review Letters, 2011
A rivulet flowing down an inclined plane often does not follow a straight path, but starts to meander spontaneously. Here we show that this instability is the result of two key ingredients: fluid inertia and anisotropy of the friction between rivulet and substrate.
Daerr, A   +3 more
openaire   +5 more sources

The cost of swimming in generalized Newtonian fluids: Experiments with C. elegans [PDF]

open access: yesJ. Fluid Mech. (2016), vol. 800, pp. 753-765, 2016
Numerous natural processes are contingent on microorganisms' ability to swim through fluids with non-Newtonian rheology. Here, we use the model organism Caenorhabditis elegans and tracking methods to experimentally investigate the dynamics of undulatory swimming in shear-thinning fluids. Theory and simulation have proposed that the cost of swimming, or
arxiv   +1 more source

Stability of Anisotropic Cylinder with Zero Expansion [PDF]

open access: yesMon. Not. R. Astron. Soc. 430(2013)3048, 2013
We study the dynamical instability of anisotropic collapsing cylinder with the expansion-free condition, which generates vacuum cavity within fluid distribution. The perturbation scheme is applied to distinguish Newtonian, post-Newtonian and post-post Newtonian terms, which are used for constructing dynamical equation at Newtonian and post-Newtonian ...
arxiv   +1 more source

Energetic variational approaches for non-Newtonian fluid systems [PDF]

open access: yes, 2017
We consider the dominant equations for the motion of the non-Newtonian fluid in a domain from an energetic point of view. We apply our energetic variational approaches and the first law of thermodynamics to derive the generalized compressible non-Newtonian fluid system.
arxiv   +1 more source

Generalized Newtonian fluids in moving domains

open access: yesJournal of Differential Equations, 2018
Abstract In this paper we prove the existence of weak solutions for the equations describing the unsteady motion of an incompressible, viscous and homogeneous generalized Newtonian fluid in a non-cylindrical domain ⋃ t ∈ I { t } × Ω ( t ) .
Nägele, Philipp, Růžička, Michael
openaire   +3 more sources

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