Results 21 to 30 of about 53,063 (291)

Linear Stability of Magneto Viscoelastic Walter’s B′ Type with Heat and Mass Transfer

open access: yesAdvances in High Energy Physics, 2022
In this paper, the couple influence of axial magnetic field and the heat and mass transfer on two rotating cylinders of Walter’s B′ viscoelastic fluids by using the potential flow theory of viscoelastic fluid has been investigated. The normal mode method
D. M. Mostafa
doaj   +1 more source

Experimental Resonances in Viscoelastic Microfluidics

open access: yesFrontiers in Physics, 2021
Pulsatile flows of viscoelastic fluids are very important for lab-on-a-chip devices, because most biofluids have viscoelastic character and respond distinctively to different periodic forcing.
Pamela Vazquez-Vergara   +5 more
doaj   +1 more source

Flow of Viscoelastic Fluid through a Helical Coil [PDF]

open access: yesChemical and Biochemical Engineering Quarterly, 2017
The study aims at quantifying the effect of fluid elasticity on frictional pressure drop for the flow of viscoelastic fluid through a helical coil. Aqueous solutions of polyacrylamide (PAA) in the concentration range 0.25 %–0.5 % (wt/vol.) were used as ...
A. Sobti, R. Sehgal, R. K. Wanchoo
doaj   +1 more source

Novel Trends in the Development of Surfactant-Based Hydraulic Fracturing Fluids: A Review

open access: yesGels, 2021
Viscoelastic surfactants (VES) are amphiphilic molecules which self-assemble into long polymer-like aggregates—wormlike micelles. Such micellar chains form an entangled network, imparting high viscosity and viscoelasticity to aqueous solutions.
Andrey V. Shibaev   +2 more
doaj   +1 more source

Physical Overview of the Instability in Laminar Wall-Bounded Flows of Viscoplastic and Viscoelastic Fluids at Subcritical Reynolds Numbers [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2023
This paper reviews the latest findings on instability and subcritical transition to turbulence in wall-bounded flows (i.e., pipe Poiseuille flow, plane channel flow, and plane Couette flow).
Hamed Mirzaee   +3 more
doaj   +1 more source

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

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

Dean flow velocity of viscoelastic fluids in curved microchannels

open access: yesAIP Advances, 2020
Curved microchannels take advantage of inertial and Dean drag forces to achieve size-based separation of particles and cells. Despite the reported numerical and experimental correlations for Dean velocity (VDe) of Newtonian fluids, comprehensive studies ...
Arsalan Nikdoost, Pouya Rezai
doaj   +1 more source

Tunable Viscoelastic Properties of Sodium Polyacrylate Solution via CO2-Responsive Switchable Water

open access: yesMolecules, 2021
Upon stimulus by CO2, CO2-switchable viscoelastic fluids experience a deliberate transition between non-viscous and highly viscous solution states. Despite attracting considerable recent attention, most such fluids have not been applied at a large- scale
Dianguo Wu   +6 more
doaj   +1 more source

Microfluidic systems for the analysis of the viscoelastic fluid flow phenomena in porous media [PDF]

open access: yes, 2011
In this study, two microfluidic devices are proposed as simplified 1-D microfluidic analogues of a porous medium. The objectives are twofold: firstly to assess the usefulness of the microchannels to mimic the porous medium in a controlled and simplified ...
A Einstein   +50 more
core   +1 more source

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