Results 61 to 70 of about 380,217 (328)

Remarks on the energy equality for the non-Newtonian fluids

, 2019
By establishing some new trilinear estimates, we could show that a weak solution to the non-Newtonian fluids satisfies the energy equality, under some integrability conditions on the velocity or velocity gradient. This significantly extends (Yang (2019) [
Zujin Zhang
semanticscholar   +1 more source

Theorems on shear-free perfect fluids with their Newtonian analogues

, 1997
In this paper we provide fully covariant proofs of some theorems on shear-free perfect fluids. In particular, we explicitly show that any shear-free perfect fluid with the acceleration proportional to the vorticity vector (including the simpler case of ...
A. A. Coley, A. Barnes, A. J. White, A. Matte, A. R. King, A. Raychaudhuri, C. A. Truesdell, C. B. Collins, C. B. Collins, C. B. Collins, C. B. Collins, Carlos F. Sopuerta, D. Kramer, E. Schücking, G. E. Tauber, G. F. R. Ellis, G. F. R. Ellis, G. F. R. Ellis, H Flanders, J. Carminati, J. Carminati, J. Carminati, J. Ehlers, J. Ehlers, J. Kristian, J. L. Synge, J. M. Lang, J. N. Islam, J. Winicour, José M. M. Senovilla, K. Gödel, L. Bel, L. P. Eisenhart, M. A. H. MacCallum, O. Heckmann, P. Szekeres, Peter Szekeres, R. Treciokas, S. Banerji, S. W. Hawking, S. W. Hawking   +40 more
core   +1 more source

Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization

Advanced Materials, EarlyView.
A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab, Jack F. Murphy, Michael Bartolf‐Kopp, Jenny C‐C Hsin, Alice Chernaik, Frank McCaughan, Yan Yan Shery Huang, Tomasz Jungst, Jürgen Groll   +8 more
wiley   +1 more source

Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance

Advanced Materials Interfaces, EarlyView.
Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad, Vandana Molahalli, Apichart Pattanaporkratana, Nattaporn Chattham   +3 more
wiley   +1 more source

Modeling and prediction of fractional-order MHD hybrid nanofluid flow using CPCF derivatives and LMS-based neural networks

Results in Engineering
This study investigates the unsteady natural convection flows of an inclined magnetohydrodynamic (MHD) Casson hybrid nanofluid over an unbounded vertical plate with fractional thermal transport.
Laiba Ghafoor, Imran Siddique, Muhammad Nadeem, Waleed Mohammed Abdelfattah, Barno Abdullaeva, Admilson T. Franco, Zaher Mundher Yaseen   +6 more
doaj   +1 more source

Mathematical analysis of a one-dimensional model for an aging fluid

, 2012
We study mathematically a system of partial differential equations arising in the modelling of an aging fluid, a particular class of non Newtonian fluids.
Benoit, David, Bris, Claude Le, He, Lingbing, Lelièvre, Tony   +3 more
core   +3 more sources

Hydrogel‐Based 3D‐Printable Stretchable Pressure Sensor

Advanced Materials Technologies, EarlyView.
We present a carbon‐black‐functionalized double‐network granular hydrogel (DNGH) pressure sensor capable of detecting pressures from 200 Pa, equivalent to a light finger touch, up to 500 kPa. The sensor exhibits signal drifts below 3.5% after 800 cycles and response times around 80 ms. Leveraging this broad sensing range, we 3D print this material into
Tianyu Yuan, Chenzhuo Li, Antonia Georgopoulou, John M. Kolinski, Esther Amstad   +4 more
wiley   +1 more source

Characterization of Droplet Formation in Ultrasonic Spray Coating: Influence of Ink Formulation Using Phase Doppler Anemometry and Machine Learning

Advanced Materials Technologies, EarlyView.
This study explores how machine learning models, trained on small experimental datasets obtained via Phase Doppler Anemometry (PDA), can accurately predict droplet size (D32) in ultrasonic spray coating (USSC). By capturing the influence of ink complexity (solvent, polymer, nanoparticles), power, and flow rate, the model enables precise droplet control
Pieter Verding, Danny E. P. Vanpoucke, Yunus T. Aksoy, Tobias Corthouts, Maria R. Vetrano, Wim Deferme   +5 more
wiley   +1 more source

Analytical and Computational Modeling of Relaxation Times for Non-Newtonian Fluids

Fluids
With the availability of efficient and sophisticated finite element analysis (FEA) and computational fluid dynamics (CFD) tools, engineering designs are becoming more software-driven and simulation-based.
Sheldon Wang, Dalong Gao, Alexandria Wester, Kalyb Beaver, Kuwin Wyke   +4 more
doaj   +1 more source

Bipolar Barotropic Non-Newtonian Compressible Fluids [PDF]

ESAIM: Mathematical Modelling and Numerical Analysis, 2000
Summary: For a barotropic motion of non-Newtonian bipolar fluids, we consider a special case where the stress tensor is expressed in the form of potentials depending on \(e_{ii}\) and \(({\partial e_{ij} \over \partial x_k})\). We prove the asymptotic stability of the rest state under the assumption of regularity of potential forces.
Matušů-Nečasová, Šárka, Medviďová-Lukáčová, Mária   +1 more
openaire   +2 more sources