Results 51 to 60 of about 910,115 (197)

Force moments of an active particle in a complex fluid [PDF]

open access: yes, 2017
A generalized reciprocal theorem is formulated for the motion and hydrodynamic force moments of an active particle in an arbitrary background flow of a (weakly nonlinear) complex fluid. This formalism includes as special cases a number of previous calculations of the motion of both passive and active particles in Newtonian and non-Newtonian fluids.
arxiv   +1 more source

Numerical data generation for building machine learning models for permeability estimation of fibrous structures

open access: yesPolymer Composites, EarlyView.
Data‐driven emulators can estimate the permeability in less than 10% of the time compared to numerical permeability determination. Abstract The challenge of developing effective multiscale flow simulation methods is to take into account all relevant physical effects from fiber to component level, but remain manageable in terms of computational effort ...
Tim Schmidt   +5 more
wiley   +1 more source

Machine learning for screw design in single‐screw extrusion

open access: yesPolymer Engineering &Science, EarlyView.
A dataset of inputs (screw dimensions, operating conditions, rheological and thermophysical properties) and outputs (including mass flowrate, exit temperature, and melting length) was generated from numerical simulations. Data‐driven predictions of outputs, with the help of machine learning algorithms, were in satisfactory agreement with the numerical ...
Nickolas D. Polychronopoulos   +6 more
wiley   +1 more source

Lp-strong solution to fluid-rigid body interaction system with Navier slip boundary condition [PDF]

open access: yesarXiv, 2019
We study a fluid-structure interaction problem describing movement of a rigid body inside a bounded domain filled by a viscous fluid. The fluid is modelled by the generalized incompressible Naiver-Stokes equations which include cases of Newtonian and non-Newtonian fluids.
arxiv  

Cosmological Dynamics of Interacting Dark Energy and Dark Matter in f(Q)$f(Q)$ Gravity

open access: yesFortschritte der Physik, EarlyView.
Abstract In this work, the behavior of interacting dark energy (DE) and dark matter (DM) within a model of f(Q)$f(Q)$ gravity is explored, employing the standard framework of dynamical system analysis. The power‐law f(Q)$f(Q)$ model is considered, incorporating two different forms of interacting DE and DM: 3αHρm$3\alpha H\rho _m$ and α3HρmρDE$\frac ...
Gaurav N. Gadbail   +3 more
wiley   +1 more source

Partial Melting and Structural Disorder in Models of Irradiated Amorphous Ge2Sb2Te5

open access: yesphysica status solidi (RRL) – Rapid Research Letters, EarlyView.
The evolution of the potential energy landscape of glassy Ge2Sb2Te5$\left(\text{Ge}\right)_{2} \left(\text{Sb}\right)_{2} \left(\text{Te}\right)_{5}$ during irradiation indicates the partial melting of the model structure. This view provides a thermodynamic insight into the fast recovery of the amorphous network after irradiation. The chemical disorder
Felix C. Mocanu   +2 more
wiley   +1 more source

Peristaltic Pumping of a Generalized Newtonian Fluid in an Elastic Tube

open access: yesJournal of Applied Fluid Mechanics, 2017
The paper investigates the peristaltic pumping of an incompressible non-Newtonian fluid in an elastic tube with long wavelengths and low Reynolds number approximations. Carreau fluid model is considered for present study to describe the peristaltic flow characteristics of non- Newtonian fluid in an elastic tube. Carreau fluid is a generalized Newtonian
C.K. Selvi   +2 more
openaire   +3 more sources

Dynamics of Spatial Organization of Bacterial Communities in a Tunable Flow Gut Microbiome‐on‐a‐Chip

open access: yesSmall, EarlyView.
This study introduces a tunable flow Gut Microbiome‐on‐a‐Chip (tfGMoC), a facile platform to simulate gut motility‐driven hydrodynamic forces to investigate microbial dynamics in a 3D gut‐like structure (µGut). The findings demonstrate that hydrodynamic forces facilitate bacterial spatial exploration and influence the organization of microbial ...
Jeeyeon Lee   +3 more
wiley   +1 more source

Autonomous Artificial Molecular Motors and Pumps

open access: yesChemSystemsChem, EarlyView.
Autonomous energy consumption is the only way to introduce molecular motors into more sophisticated, larger systems, capable of life‐like behavior. We reviewed a selection of the most recent advances in the field molecular motors focusing on those capable of performing continuous and autonomous motion under constant experimental conditions, that is ...
Chiara Taticchi   +2 more
wiley   +1 more source

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