Results 11 to 20 of about 3,761 (206)

Existence of weak solutions for steady flows of electrorheological fluid with Navier-slip type boundary conditions [PDF]

open access: yesMathematica Bohemica, 2022
We prove the existence of weak solutions for steady flows of electrorheological fluids with homogeneous Navier-slip type boundary conditions provided $p(x)>2n/(n+2)$.
Cholmin Sin, Sin-Il Ri
doaj   +1 more source

Shear Motion Characteristics Analysis of Electrorheological Fluids Between Flat Disk and Corrugated Disk

open access: yesFrontiers in Materials, 2022
In order to improve the transmission torque caused by the electrorheological effect, a corrugated disk is proposed to replace traditional flat disk by changing the electrode surface shape.
Chunyu Li   +3 more
doaj   +1 more source

Smart Fluids and Their Applications in Drilling Fluids to Meet Drilling Technical Challenges

open access: yesAdvances in Materials Science and Engineering, 2022
This article presents extensive analysis and review on recent developments in smart fluids as well as future opportunities of smart drilling fluids utilization in oil and gas well drilling while focusing on the following smart fluids: smart nanoparticles,
Deng Jingen   +2 more
doaj   +1 more source

Strong Electrorheological Performance of Smart Fluids Based on TiO2 Particles at Relatively Low Electric Field

open access: yesFrontiers in Materials, 2021
Electrorheological (ER) fluids are a type of smart material with adjustable rheological properties. Generally, the high yield stress (>100 kPa) requires high electric field strength (>4 kV/mm).
Yuchuan Cheng   +11 more
doaj   +1 more source

Flow of electrorheological fluid under conditions of slip on the boundary

open access: yesAbstract and Applied Analysis, 2006
We study a mathematical model describing flows of electrorheological fluids. A theorem of existence of a weak solution is proved. For this purpose the approximating-topological method is used.
R. H. W. Hoppe   +3 more
doaj   +2 more sources

Halloysite nanotubes: Prospects in electrorheology

open access: yeseXPRESS Polymer Letters, 2018
Electrorheological fluids based on polydimethylsiloxane filled with halloysite nanotubes were studied. The filler structure was characterized by TEM, SEM, and X-ray diffraction. When an electric field is applied to suspensions, their rheological behavior
N. M. Kuznetsov   +6 more
doaj   +1 more source

Influence of the Polarity of the Electric Field on Electrorheometry [PDF]

open access: yes, 2019
Uniaxial extensional flow is a canonical flow typically used in rheological characterization to provide complementary information to that obtained by imposing simple shear flow.
Galindo Rosales, Francisco J.   +2 more
core   +1 more source

Convergence Analysis for a Finite Element Approximation of a Steady Model for Electrorheological Fluids [PDF]

open access: yes, 2015
In this paper we study the finite element approximation of systems of $p(\cdot)$-Stokes type, where $p(\cdot)$ is a (non constant) given function of the space variables. We derive --in some cases optimal-- error estimates for finite element approximation
Berselli, Luigi C.   +2 more
core   +3 more sources

Electrorheological fluids [PDF]

open access: yes, 1996
An Electrorheological fluid is normally a low-viscosity colloidal suspension, but when an electric field is applied, the fluid undergoes a reversible transition to a solid, being able to support considerable stress without yield. Commercial possibilities for such fluids are enormous, including clutches, brakes, valves,shock absorbers, and stepper ...
Adolf, D.   +6 more
openaire   +2 more sources

Dynamic simulation of an electrorheological fluid [PDF]

open access: yes, 1992
A molecular-dynamics-like method is presented for the simulation of a suspension of dielectric particles in a nonconductive solvent forming an electrorheological fluid.
Bonnecaze, R. T., Brady, J. F.
core   +1 more source

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