Results 51 to 60 of about 32,174 (313)

Generalized Navier–Stokes equations and soft hairy horizons in fluid/gravity correspondence

Nuclear Physics B, 2021
The fluid/gravity correspondence establishes how gravitational dynamics, as dictated by Einstein's field equations, are related to the fluid dynamics, governed by the relativistic Navier–Stokes equations.
A.J. Ferreira–Martins, R. da Rocha
doaj  

The Regularity Criteria and the A Priori Estimate on the 3D Incompressible Navier-Stokes Equations in Orthogonal Curvilinear Coordinate Systems

Journal of Function Spaces, 2020
The paper considers the regularity problem on three-dimensional incompressible Navier-Stokes equations in general orthogonal curvilinear coordinate systems.
Fan Geng, Shu Wang, Yongxin Wang
doaj   +1 more source

Flow Analysis in Pathological Microvascular Models by Ultrasound Localization Microscopy

Advanced Materials Technologies, EarlyView.
This study presents a new platform combining ultrasound localization microscopy with biomimetic gelatin phantoms to analyze flow dynamics in small vessels with narrowing or obstructions. Using microbubble tracking, the method enables high‐resolution velocity mapping in 100–500 µm channels, revealing flow changes in pathological microvascular conditions
Yarin Gershman, Grigori Shapiro, Tamar Mano, Tali Ilovitsh   +3 more
wiley   +1 more source

Droplet‐Based Synthesis of Nanogels for Controlled Drug Delivery via Two Photon Polymerization‐3D Printed Microfluidic Device

Advanced Materials Technologies, EarlyView.
A miniaturized microfluidic device is 3D printed via two‐photon polymerization and used for the droplet‐based microfluidic synthesis of nanogels for controlled drug delivery purposes. Tuning the fluid flow parameters, the microfluidic system enables the modulation of nanogel size and properties, preserving an extremely low polydispersity, beyond the ...
Vladimir Matining, Camillo Colli, Emanuela Jacchetti, Giulia Nicoletti, Laura Rosanò, Manuela Teresa Raimondi, Bianca Maria Colosimo, Emanuele Mauri, Davide Moscatelli   +8 more
wiley   +1 more source

Rheology of compressible and density-variable Newtonian flows: non-Stokes hypothesis and ‘volume diffusion’

Journal of Physics Communications
Stokes’ hypothesis allows for the frequent neglect of the bulk viscosity term related to fluid dilation effects on the viscous stress tensor in Newtonian flows.
S Kokou Dadzie
doaj   +1 more source

Navier-Stokes equations for generalized thermostatistics [PDF]

Brazilian Journal of Physics, 1999
RevTeX and epsf macros required, 19 pages, 8 ...
openaire   +5 more sources

Extreme Terahertz Nonlinearity of AlGaN/GaN‐Based Grating‐Gate Plasmonic Crystals

Advanced Optical Materials, EarlyView.
Plasmonic crystals based on grating‐gated 2D electron gas in AlGaN/GaN heterostructures provide a platform for strong light‐matter interaction. Pump‐probe experiments revealed strong terahertz nonlinearity leading to 45% increase in transmission at a fluence below 350 nJ cm−2.
Pavlo Sai, Vadym V. Korotyeyev, Dmytro B. But, Maksym Dub, Dmitriy Yavorskiy, Jerzy Łusakowski, Mateusz Słowikowski, Serhii Kukhtaruk, Yurii Liashchuk, Jeong Woo Han, Christoph Böttger, Alexej Pashkin, Stephan Winnerl, Wojciech Knap, Martin Mittendorff   +14 more
wiley   +1 more source

Finite Element Modelling of the Hydrodynamic Environment of a Small ROV [PDF]

Modeling, Identification and Control, 1993
This paper addresses a practical problem, namely, modeling the hydrodynamic environment of a small ROV. This has become the problem of solving time-dependent incompressible Navier-Stokes equations with moving boundaries and a new method is developed to ...
Ren Guang, Jens G. Balchen
doaj   +1 more source

Anisotropic Surface Microrollers for Endovascular Navigation: A Computational Analysis with a Case Study in Hepatic Perfusion

Advanced Theory and Simulations, EarlyView.
Computational fluid dynamics analyses assess the upstream locomotion performance of anisotropic microrollers with varying height‐to‐width ratios. Observing their successful upstream locomotion in veins, their performance in hepatic circulation is investigated for treating primary liver cancer.
Burak Arslan, Ugur Bozuyuk, Kıvanç Görgülü, Erdost Yildiz, Hakancan Ozturk, Lucia Liotta, Volker Heinemann, Hana Algül, Metin Sitti   +8 more
wiley   +1 more source

Surface Rolling Active Magnetic Emulsions

Advanced Science, EarlyView.
This study presents synergistic combination of materials to augment the life‐like chemotactic abilities of oil droplets towards microrobotics applications. Magnetically actuated autonomous oil droplets possess on‐demand switchable locomotion modalities with augmented navigation in complex confined spaces and can perform cargo transportation.
Muhammad Turab Ali Khan, Gaurav Gardi, Ugur Bozuyuk, Metin Sitti   +3 more
wiley   +1 more source