Results 61 to 70 of about 197,024 (274)

Research on Optimization of Flow Field and Combustion Performance in Boilers With Combined Near‐Wall Air Supply Systems

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In the pulverized coal boiler industry, reducing NOx emissions has become a critical objective. Although low‐NOx combustion technologies are effective, they may lead to localized high‐temperature corrosion. To address this issue, near‐wall air supply technology has been introduced, which involves injecting an appropriate amount of air near the
Wangyongjia Zhong   +4 more
wiley   +1 more source

Reproductive solutions for the g-Navier-Stokes and g-Kelvin-Voight equations

open access: yesElectronic Journal of Differential Equations, 2016
This article presents the existence of reproductive solutions of g-Navier-Stokes and g-Kelvin-Voight equations. In this way, for weak solutions, we reach basically the same result as for classic Navier-Stokes equations.
Luis Friz   +2 more
doaj  

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

open access: yesModeling, 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

3D Resolved Computational Modeling to Simulate the Electrolyte Wetting of a Lithium‐Ion Battery Cell with 18650 Format

open access: yesBatteries &Supercaps, EarlyView.
The electrolyte wetting of a lithium ion battery cylindrical cell is explored in this study with a 3D resolved continuum model that considers the exact spiral geometry found in commercial 18650 cells. The jelly roll architecture and capillary pressure are shown to be key determinants of the wetting degree and electrolyte distribution within the cell ...
Emmanuel Yerumoh   +3 more
wiley   +1 more source

An Accessible Platform to Quantify Oxygen Diffusion in Cell‐Laden Hydrogels and Its Application to Alginate‐Immobilized Pancreatic Beta Cells

open access: yesBiotechnology and Bioengineering, EarlyView.
A simple setup to measure oxygen diffusion coefficients was developed using equipment accessible to most wet laboratories. Gels that appeared softer and had lower loss moduli correlated with higher oxygen diffusion coefficients. Dimensionless number analyses using the Thiele Modulus and effectiveness factors were predictive of viability profiles within
Hamid Ebrahimi Orimi   +6 more
wiley   +1 more source

Engineering Catalysts at the Multiscale: Past, Present, and Future of Catalyst Manufacturing and Shaping Processes

open access: yesChemCatChem, EarlyView.
The image illustrates the journey of catalyst engineering across scales, emphasizing the design, shaping, and manufacturing of technical catalysts. It highlights how hierarchical structuring bridges properties and process innovation, showcasing the continuum between fundamental science and industrial practice that defines modern catalyst engineering ...
Ali M. Alkadhem   +6 more
wiley   +1 more source

EQUATION OF CONTINUITY IN THE CYLINDRICAL COORDINATES SYSTEM

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2016
Sophisticated viscous compressible heat-conducting gases arising during heating the vertical field, have a pronounced axial symmetry. Therefore, for the numerical solution of the full Navier - Stokes equations to describe such gas flows is advisable to ...
A. G. Obukhov, N. V. Chunikhina
doaj   +1 more source

Ghost effect from Boltzmann theory

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract Taking place naturally in a gas subject to a given wall temperature distribution, the “ghost effect” exhibits a rare kinetic effect beyond the prediction of classical fluid theory and Fourier law in such a classical problem in physics. As the Knudsen number ε$\varepsilon$ goes to zero, the finite variation of temperature in the bulk is ...
Raffaele Esposito   +3 more
wiley   +1 more source

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