نتایج جستجو برای: extensional flow

تعداد نتایج: 484730  

2003
Alejandro Daniel Rey

Carbon fibers are widely used in many industrial applications due the fact of their excellent properties. Carbonaceous mesophases are liquid crystalline precursor materials that can be spun into high performance carbon fibers using the melt spinning process, which is a flow cascade consisting of pressure driven flow-converging die flow-free surface extensional spinline flow that modifies the pr...

2004
Gerrit W.M. Peters

A computational model for the combined processes of quiescent and flowinduced crystallization of polymers is presented. This modelling should provide the necessary input data, in terms of the structure distribution in a product, for the prediction of mechanical properties and shapeand dimensional-stability. Rather then the shear rate as the driving force, a viscoelastic approach is proposed, wh...

Journal: :Physics of Fluids 2023

Motivated by problems arising in tear film dynamics, we present a model for the extensional flow of thin sheets nematic liquid crystal. The rod-like molecules these substances impart an elastic contribution to its response. We rescale weakly due Cummings et al. [European Journal Applied Mathematics 25 (2014): 397-423] describe case moderate elasticity. resulting system two nonlinear partial dif...

Journal: :Frontiers in Physics 2022

Prior studies have revealed that nonzero odd viscosity is an essential property for chiral active fluids. Here we report such also exists in suspensions of non-active or non-externally-driven but chirally-shaped particles. Computational simulations are carried out monolayers dense ratchets simple shear and planar extensional flows. The contact between two can be either frictionless infinitely-f...

2004
Grigore Rosu

This paper is an attempt to develop a unifying algebraic framework for extensional theories capturing formally the informal concept of extensionality, as well as a generic automated proving technique, called extensional rewriting, that can be instantiated and then used to prove equational properties in various particular extensional theories.

Journal: :Data Knowl. Eng. 2003
Luigi Pontieri Domenico Ursino Ester Zumpano

In this paper we propose an approach for the extensional integration of data sources with heterogeneous representation formats. The proposed approach is based on the exploitation of a new model, called E-SDR-Network, for representing and handling, at the extensional level, heterogeneous data sources, ranging from databases to XML documents, OEM graphs and other semi-structured data. Due to the ...

2007
Gilad Ben-Avi Yoad Winter

This paper introduces a procedure that takes a simple version of extensional semantics and generates from it an equivalent possibleworld semantics that is suitable for treating intensional phenomena in natural language. This process of intensionalization allows to treat intensional phenomena as stemming exclusively from the lexical meaning of words like believe, need or fake. We illustrate the ...

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