Results 31 to 40 of about 35,623 (166)

A Finite Difference Method for Solving Unsteady Fractional Oldroyd-B Viscoelastic Flow Based on Caputo Derivative

open access: yesAdvances in Mathematical Physics, 2023
In this paper, the effect of a fractional constitutive model on the rheological properties of fluids and its application in numerical simulation are investigated, which is important to characterize the rheological properties of fluids and physical ...
Fang Wang, Yu Wang
doaj   +1 more source

Numerical Modeling of pipes conveying gas-liquid two-phase flow [PDF]

open access: yesE3S Web of Conferences, 2019
Results of studies of the oscillations of pipelines conveying a two-phase slug flow are presented in the paper. A viscoelastic model of the theory of beams and the Winkler base model are used in the study of pipeline oscillations with a gas-containing ...
Khudayarov Bakhtiyar   +2 more
doaj   +1 more source

Modeling Asymmetric Flow of Viscoelastic Fluid in Symmetric Planar Sudden Expansion Geometry Based on User-Defined Function in FLUENT CFD Package

open access: yesAdvances in Mechanical Engineering, 2013
Through embedding an in-house subroutine into FLUENT code by utilizing the functionalization of user-defined function provided by the software, a new numerical simulation methodology on viscoelastic fluid flows has been established. In order to benchmark
Zhi-Ying Zheng   +2 more
doaj   +1 more source

CFD Analysis of Non-Isothermal Viscoelastic Flow of HDPE Melt Through an Extruder Die

open access: yesFluids
The optimization of polymer extrusion processes is crucial for improving product quality and manufacturing efficiency in plastic industries. This study aims to investigate the viscoelastic flow behavior of high-density polyethylene (HDPE) through an ...
Aung Ko Ko Myint   +2 more
doaj   +1 more source

Evaluation of cup-type jig for parallel plate rheometer by viscoelastic flow simulation

open access: yesNihon Kikai Gakkai ronbunshu, 2015
In order to measure the flow characteristics of polymer melt with high melt index, e.g. polyester and polyethylene terephtalate (PET) used for fiber processing, we discuss the utility of the cup-type jig for measurement of the steady-state shear flow ...
Shuichi TANOUE   +2 more
doaj   +1 more source

NUMERICAL SIMULATION OF VISCOPRELIC LIQUID FLOW WITH INTEGRAL RHEOLOGICAL LAW IN FLAT OR CYLINDRICAL CHANNELS

open access: yesКомпютерні системи та інформаційні технології, 2020
The viscoelastic liquid may be a melt of a polymeric material from a rheological point of view. Therefore, emphasis will place on the practical application of the results of the solution of the mathematical model of the flow of viscoelastic fluid in ...
SYNYUK O.
doaj   +1 more source

VISCOELASTIC FLUID FLOW FEATURES IN THE DISK-SHAPED GAP EXTRUDER

open access: yesВісник Національного технічного університету України «Київський політехнічний інститут імені Ігоря Сікорського»: Серія «Хімічна інженерія, екологія та ресурсозбереження», 2013
Disk-shaped gap extruders have higher plasticizing and homogenizing power than screw extruders, but the forming pressure which they develop is lower. Therefore, they are mainly used as mixers or granulators for loading the prep- aration material into ...
Ксенія Геннадіївна Коваленко   +2 more
doaj   +1 more source

Biological benefits of collective swimming of sperm in a viscoelastic fluid

open access: yesFrontiers in Cell and Developmental Biology, 2022
Collective swimming is evident in the sperm of several mammalian species. In bull (Bos taurus) sperm, high viscoelasticity of the surrounding fluid induces the sperm to form dynamic clusters.
Shiva Phuyal   +3 more
doaj   +1 more source

Existence of multiple solutions for magnetohydrodynamic flows of second-grade and Walter’s B fluids due continuously contracting flat sheet with partial slip

open access: yesPartial Differential Equations in Applied Mathematics, 2022
In the present investigation, an attempt is performed to analyse the existence of multiple exact solutions for magnetohydrodynamic flows of second-grade and Walter’s B fluids due continuously contracting flat sheet with partial slip condition at the ...
Anil Kumar Gautam   +5 more
doaj   +1 more source

A Blowup Criterion for Ideal Viscoelastic Flow [PDF]

open access: yesJournal of Mathematical Fluid Mechanics, 2012
We establish an analog of the Beale-Kato-Majda criterion for singularities of smooth solutions of the system of PDE arising in the Oldroyd model for ideal viscoelastic flow.
Hu, Xianpeng, Hynd, Ryan
openaire   +2 more sources

Home - About - Disclaimer - Privacy