Results 21 to 30 of about 89,189 (335)

Natural convection of viscoplastic fluids in side-heated open cavities

Case Studies in Thermal Engineering
This study considers the natural convection process of viscoplastic fluid in a side-open cavity filled with conductive solid blocks, which are uniformly distributed and form a square lattice.
Paulo R.M. Santos, Admilson T. Franco, Silvio L.M. Junqueira, Muhammad Nadeem   +3 more
doaj   +1 more source

Numerical investigation of viscoplastic fluids on natural convection in open cavities with solid obstacles

Heliyon
This study investigates the natural convection process within open cavities filled with viscoplastic fluid following the Bingham model with solid square conductive blocks uniformly distributed throughout the cavity.
Paulo R.M. Santos, Admilson T. Franco, Silvio L.M. Junqueira   +2 more
doaj   +1 more source

Droplet breakup driven by shear thinning solutions in a microfluidic T-Junction [PDF]

, 2017
Droplet-based microfluidics turned out to be an efficient and adjustable platform for digital analysis, encapsulation of cells, drug formulation, and polymerase chain reaction.
Chiarello, Enrico, Gupta, Anupam, Mistura, Giampaolo, Pierno, Matteo, Sbragaglia, Mauro   +4 more
core   +2 more sources

Lattice Boltzmann simulations of unsteady Bingham fluid flows

Applications in Engineering Science
Transient flows of viscoplastic fluids have very peculiar characteristics. The startup and cessation flows of viscoplastic materials have been subject to many theoretical and numerical investigations. The most challenging aspect of numerical solutions of
Alan Lugarini, Marco A. Ferrari, Admilson T. Franco   +2 more
doaj   +1 more source

Flow of Non-Newtonian Fluids

Nihon Reoroji Gakkaishi(Journal of the Society of Rheology, Japan), 1982
The present paper summarizes various problems on non-Newtonian fluid mechanics. Due to complex rheological behaviors of non-Newtonian fluids, constitutive equations have highly nonlinear character. As two approaches to obtain constitutive equations, continuum mechanics and molecular theory are described, and then a number of models are presented ...
openaire   +4 more sources

Laminar flow in three-dimensional square-square expansions [PDF]

, 2011
In this work we investigate the three-dimensional laminar flow of Newtonian and viscoelastic fluids through square–square expansions. The experimental results obtained in this simple geometry provide useful data for benchmarking purposes in complex three-
Alves, M.A., Coelho, P.M., Oliveira, Monica, Sousa, P.C.   +3 more
core   +1 more source

Developing a machine learning-based methodology for optimal hyperparameter determination—A mathematical modeling of high-pressure and high-temperature drilling fluid behavior

Chemical Engineering Journal Advances
Drilling fluids exhibit complex rheological behavior due to a non-linear response to shear rate variations and high sensitivity to changes in temperature, time, and pressure conditions. The prediction of drilling fluid rheological behavior is crucial for
Luis H. Quitian-Ardila, Yamid J. Garcia-Blanco, Angel De J. Rivera, Raquel S. Schimicoscki, Muhammad Nadeem, Oriana Palma Calabokis, Vladimir Ballesteros-Ballesteros, Admilson T. Franco   +7 more
doaj   +1 more source

Characteristics of stratified flows of Newtonian/non-Newtonian shear-thinning fluids

, 2017
Exact solutions for laminar stratified flows of Newtonian/non-Newtonian shear-thinning fluids in horizontal and inclined channels are presented. An iterative algorithm is proposed to compute the laminar solution for the general case of a Carreau non ...
Brauner, Neima, Picchi, Davide, Poesio, Pietro, Ullmann, Amos   +3 more
core   +1 more source

Thrifty swimming with shear-thinning [PDF]

, 2018
Microscale propulsion is integral to numerous biomedical systems, for example biofilm formation and human reproduction, where the surrounding fluids comprise suspensions of polymers.
Gagnon, David A., Montenegro-Johnson, Thomas D.   +1 more
core   +2 more sources

Rheology of waxy oils: A critical review

Applications in Engineering Science
Waxy oil is a rheologically complex material presenting shear-rate-dependent viscosity, static and dynamic yield stresses, gel elasto-viscoplasticity, time/deformation-dependent gel structure, and irreversibility.
Diogo E.V. Andrade, Cezar O.R. Negrão
doaj   +1 more source