Results 61 to 70 of about 4,398,015 (289)

Compact scheme with two-sided estimates for nonlinear convection-diffusion-reaction equations

open access: yesMathematics in Applied Sciences and Engineering
It is desirable that a numerical method is high-order accurate, compact, efficient and able to simulate purely convection problems. Most existing high-order methods for convection-diffusion-reaction equations (CDREs) either cannot simulate purely ...
Chinedu Nwaigwe
doaj   +1 more source

Hermite Method of Approximate Particular Solutions for Solving Time-Dependent Convection-Diffusion-Reaction Problems

open access: yesMathematics, 2022
This article describes the development of the Hermite method of approximate particular solutions (MAPS) to solve time-dependent convection-diffusion-reaction problems.
Jen-Yi Chang   +2 more
doaj   +1 more source

On a parabolic p-Laplacian system with a convective term

open access: yesAnnali di Matematica Pura ed Applicata (1923 -)
We prove a result of existence of regular solutions and a maximum principle for solutions to a parabolic p-Laplacian system with convective term.
Crispo, Francesca   +1 more
openaire   +4 more sources

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

open access: yesAdvanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim   +5 more
wiley   +1 more source

Solutions to polytropic filtration equations with a convection term

open access: yesElectronic Journal of Differential Equations, 2017
We introduce a new type of the weak solution of the polytropic filtration equations with a convection term, $$ {u_t}= \hbox{div} (a(x)|u|^{\alpha}{| {\nabla u} |^{p-2}}\nabla u) +\frac{\partial b^{i}(u^m)}{\partial x_i}.
Huashui Zhan
doaj  

Programmable Carrier‐Free All‐Enzyme Beads for Modular Continuous‐Flow Biocatalysis

open access: yesAdvanced Materials, EarlyView.
Genetically encoded enzyme building blocks self‐assemble into monodisperse, carrier‐free protein beads via a droplet‐based formulation strategy. These programmable catalytic particles enable modular continuous‐flow biocatalysis, from single‐enzyme reactions to multi‐enzyme cascades and bead–bead coupled reactor systems.
Jennifer Kühne   +12 more
wiley   +1 more source

Periodic solutions of p-Laplacian systems with a nonlinear convection term

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2009
In this work, we study the existence of periodic solutions for the evolution of p-Laplacian system and we show that these periodic solutions belong to $L^{\infty}(\omega, W^{1,\infty}(\Omega))$ and give a bound of $\left \Vert \nabla u_{i}(t)\right ...
Hamid El Ouardi
doaj   +1 more source

On convective terms approximation approach that corresponds to pure convection

open access: yes, 2018
Recent decades are put lots of efforts to develop a higher-order scheme for convective terms approximation that is stable and reliable. The idea presented here is that approximation approach has to correspond to the physical phenomenon described by approximated terms.
openaire   +2 more sources

Adapted Lie splitting method for convection-diffusion problems with singular convective term

open access: yesCoRR
Splitting methods are a widely used numerical scheme for solving convection-diffusion problems. However, they may lose stability in some situations, particularly when applied to convection-diffusion problems in the presence of an unbounded convective term.
Thi Tam Dang   +2 more
openaire   +2 more sources

From Water Vapor Transmission Rate (WVTR) to Intrinsic Water Vapor Permeability (WVP)

open access: yesAdvanced Materials, EarlyView.
Breathable membranes can appear less permeable when the measurement apparatus limits vapor transport. A calibrated four‐step model describes membrane permeation and apparatus effects as resistances in series under a common chemical‐potential driving force.
Xianke Feng   +6 more
wiley   +1 more source

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