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pro vyhledávání: '"Huan-Chang Tseng"'
Autor:
Huan-Chang Tseng
Publikováno v:
International Polymer Processing. 38:190-199
It is difficult to directly measure the steady extensional viscosity of thermoplastic composite materials, especially at high extension rates. The famous Cogswell method was derived analytically from the pressure drop of entrance flow in commercial c
Autor:
Huan-Chang Tseng
Publikováno v:
International Polymer Processing. 38:175-182
Extensional flows generally take place in a channel with varied cross-sectional areas. During polymer processing with a variety of complex geometric features, it is difficult to separate extensional rates from shear rates in state-of-the-art predicti
Autor:
Huan-Chang Tseng
Publikováno v:
International Polymer Processing. 38:126-132
The corner vortex phenomenon occurring in entry flow is relevant to both polymer rheology and polymer processing. The famous viscoelastic constitutive equations in numerical computations of fluid mechanics have always had limited relevance at low app
Autor:
Huan-Chang Tseng
Publikováno v:
International Polymer Processing.
The famous informed isotropic (IISO) viscosity successfully dominates the broader core structure of fiber orientation distributions for injection-molded long fiber composites, due to the flow-fiber coupling effect of stretching deformation. Recently,
Autor:
Huan-Chang Tseng
Publikováno v:
International Polymer Processing.
In capillary rheometry of a polymer melt, the total pressure drop consists of three primary components: shear viscosity, extensional viscosity, and normal stress differences. Traditionally, viscoelastic constitutive equations have been used to produc
Autor:
Huan-Chang Tseng
Publikováno v:
International Polymer Processing.
A modified White-Metzner viscoelastic constitutive equation is incorporated into the state-of-the-art Three Dimensional Computational Fluid Dynamics (3D-CFD) framework for performing isothermal and non-isothermal entry flow simulations of a polymer m
Autor:
Huan-Chang Tseng
Publikováno v:
Journal of Rheology. 64:493-504
Creating an entry vortex growth simulation to show viscous and elastic fluid behaviors has always been a major challenge for the computational rheology of well-characterized polymer melts with extension thickening. For one thing, it is difficult to e
Autor:
Huan-Chang Tseng
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 309:104926
Autor:
Anthony J. Favaloro, Huan-Chang Tseng
Publikováno v:
Journal of Rheology. 63:263-274
Over the past three decades, the classic Lipscomb constitutive equation of fiber suspensions in the Newtonian fluids has often been used to discuss the fundamental effects of fiber orientation on flow fields. However, the numerical methods of the Lip