Results 31 to 40 of about 13,892 (266)

Secondary instabilities in Taylor–Couette flow of shear-thinning fluids [PDF]

Journal of Fluid Mechanics, 2021
The stability of the Taylor vortex flow in Newtonian and shear-thinning fluids is investigated in the case of a wide gap Taylor–Couette system. The considered radius ratio is$\eta = R_1/R_2=0.4$. The aspect ratio (length over the gap width) of experimental configuration is 32.
S. Topayev, C. Nouar, J. Dusek
openaire   +2 more sources

Numerical simulation of blade-over-roll coating forming flows [PDF]

Computer Methods in Materials Science, 2010
Numerical simulations have been carried out via the finite element method (FEM) for the forming flow of coating using a system of blade and roll. The flow domain encompasses both the coating fluid reservoir and the doctor-blade region with free surface ...
Evan Mitsoulis, George Athanasopoulos
doaj   +1 more source

Rayleigh–Bénard Instability of an Ellis Fluid Saturated Porous Channel with an Isoflux Boundary

Fluids, 2021
The onset of the thermal instability is investigated in a porous channel with plane parallel boundaries saturated by a non–Newtonian shear–thinning fluid and subject to a horizontal throughflow.
Pedro Vayssière Brandão, Michele Celli, Antonio Barletta   +2 more
doaj   +1 more source

Effect of thermocapillarity and variable thermal conductivity on the heat transfer analysis of a non-Newtonian liquid thin film over a stretching surface in the presence of thermal radiation and heat source/sink

Nonlinear Engineering, 2018
An analysis illustrating the flow of an Ostwald-de-Waele liquid film on an unsteady stretching sheet under the influence of thermocapillary force, magnetic field and viscous dissipation is carried out. In this study, thermal conductivity is assumed to be
Sreelakshmi K., Sarojamma G.
doaj   +1 more source

Rapid wetting of shear-thinning fluids

Physical Review Fluids, 2023
Using experiments and numerical simulations, we investigate the spontaneous spreading of droplets of aqueous glycerol (Newtonian) and aqueous polymer (shear-thinning) solutions on smooth surfaces. We find that in the first millisecond the spreading of the shear-thinning solutions is identical to the spreading of water, regardless of the polymer ...
Yada, Susumu, Bazesefidpar, Kazem, Tammisola, Outi, Amberg, Gustav, Bagheri, Shervin   +4 more
openaire   +2 more sources

Liquid–Liquid Flows with Non-Newtonian Dispersed Phase in a T-Junction Microchannel

Micromachines, 2021
Immiscible liquid–liquid flows in microchannels are used extensively in various chemical and biological lab-on-a-chip systems when it is very important to predict the expected flow pattern for a variety of fluids and channel geometries.
Anna Yagodnitsyna, Alexander Kovalev, Artur Bilsky   +2 more
doaj   +1 more source

Helical propulsion in shear-thinning fluids [PDF]

Journal of Fluid Mechanics, 2016
Swimming micro-organisms often have to propel themselves in complex non-Newtonian fluids. We carry out experiments with self-propelling helical swimmers driven by an externally rotating magnetic field in shear-thinning inelastic fluids. Similarly to swimming in a Newtonian fluid, we obtain for each fluid a locomotion speed that scales linearly with the
Saúl Gómez, Francisco A. Godínez, Eric Lauga, Roberto Zenit   +3 more
openaire   +3 more sources

Stability of fully developed pipe flow of a shear-thinning fluid that approximates the response of viscoplastic fluids

Applications in Engineering Science
The stability of steady, fully developed flow in a long cylindrical pipe for a shear-thinning fluid (which approximates a class of viscoplastic materials) is studied using linear stability analysis. The eigenvalues of the frequency of the perturbation of
Mohan Anand, Paluri Kiranmai, Sai Manikiran Garimella   +2 more
doaj   +1 more source

Sedimentation of Suspensions in Shear-Thinning Fluids [PDF]

Oil & Gas Science and Technology, 2004
We present an experimental study of the sedimentation of non-Brownian monodisperse suspensions in polymeric shear-thinning fluids. In such media and contrary to what is observed in Newtonian fluids, no sedimentation front appears; particle aggregation moreover leads to the formation of vertical particle-rich structures and of an inhomogeneous particle ...
Daugan, S., Talini, L., Herzhaft, B., Peysson, Y., Allain, C.   +4 more
openaire   +2 more sources

Integration of OpenCV‐Based Microscopic Adhesive Volume Measurement Into a Pyiron Workflow for Automated Data Analysis

Advanced Engineering Materials, EarlyView.
Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
wiley   +1 more source