Results 21 to 30 of about 10,272,734 (283)

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

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

FLUID STRUCTURE INTERACTION OF NON-NEWTONIAN FLUIDS AND CIRCULAR CYLINDRICAL SHELL

, 2022
Fluid-Structure Interaction (FSI) is a field of engineering science across different sectors such as Mechanics, Aeronautics, Civil and Nuclear Engineering.
Pellicano F., Zippo A., Molaie M., Iarriccio G.   +3 more
core  

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

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Prediction of stress overshoot in thixotropic xanthan gum 4 wt.%/hydroxyethyl cellulose 4 wt.% blends: Integrating rheological characterization and restart-flow modeling

Carbohydrate Polymer Technologies and Applications
Restarting the flow of yield-stress and thixotropic fluids remains a critical challenge in deepwater operations, where gel-like microstructures develop during static periods.
Julián A. Jerez-Suarez, Luis H. Quitian-Ardila, Muhammad Nadeem, Raquel S. Schimicoscki, Yamid Garcia-Blanco, Oriana Palma Calabokis, Vladimir Ballesteros-Ballesteros, Admilson T. Franco   +7 more
doaj   +1 more source

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

Advanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

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

Embedded Direct Ink Writing of Thermoset and Elastomeric Polymers via Frontal Polymerization

Advanced Functional Materials, EarlyView.
Embedded frontal polymerization direct ink writing (FP‐DIW) combines frontal ring‐opening metathesis polymerization with embedded 3D printing to decouple deposition from curing. A yield‐stress support bath stabilizes low‐viscosity inks, while on‐demand thermal initiation enables controlled front propagation. This approach expands the accessible feature
Mohammad Tanver Hossain, Yun Seong Kim, Pallab Layak, Pranav Krishnan, Young bum Lee, Minjiang Zhu, Shubh Singh, Philippe H. Geubelle, Paul V. Braun, Jeffery W. Baur, Nancy R. Sottos, Sameh H. Tawfick, Randy H. Ewoldt   +12 more
wiley   +1 more source

Laminar Natural Convection of Newtonian and Non – Newtonian Fluids Inside Triangular Enclosure

Al-Khawarizmi Engineering Journal, 2007
In the present work, steady two – dimensional laminar natural convection heat transfer of Newtonian and non-Newtonian fluids inside isosceles triangular enclosure has been analyzed numerically for a wide range of the modified Rayleigh numbers of (103 ...
Ala?a Abbas Muhadi
doaj   +2 more sources