Results 1 to 10 of about 22,621 (165)

Diffusion and convection in nature. [PDF]

open access: yesEur Phys J E Soft Matter, 2021
We present the Topical Issue 'Diffusion and Convection in Nature'.
Vailati A, Xu S, Aime S, Croccolo F.
europepmc   +4 more sources

Diffusion against convection. [PDF]

open access: yesJ Gen Physiol, 2013
I read with great interest the recent paper entitled “Convective washout reduces antidiarrheal efficacy of enterocyte surface–targeted antisecretory drugs” by Jin et al. (2013) in the February 2013 issue of the Journal. In this paper, the influence on drug diffusion of adverse fluid convection was modeled by solving a diffusion convection equation with
Lucas ML.
europepmc   +4 more sources

Response to "Diffusion versus convection". [PDF]

open access: yesJ Gen Physiol, 2013
Thank you for the comments on our recent paper ([Jin et al., 2013][1]) about convective effects that impair drug targeting to surface-exposed sites on intestinal crypts (see [Lucas][2] in this issue).
Jin BJ, Thiagarajah JR, Verkman AS.
europepmc   +4 more sources

A nonlocal convection–diffusion equation

open access: yesJournal of Functional Analysis, 2007
En este trabajo estudiamos una ecuación no local que tiene en cuenta los efectos convectivos y difusivos, ut=J∗u−u+G∗(f(u))−f(u) en Rd, siendo J radialmente simétrica y G no necesariamente simétrica. Primero, probamos la existencia, la singularidad y la dependencia continua con respecto a la condición inicial de las soluciones.
Liviu I Ignat, Julio D Rossi
exaly   +4 more sources

A survey of numerical schemes for transportation equation [PDF]

open access: yesE3S Web of Conferences, 2021
The convection-diffusion equation is a fundamental equation that exists widely. The convection-diffusion equation consists of two processes: diffusion and convection. The convection-diffusion equation can also be called drift-diffusion equaintion.
Yu Simin
doaj   +1 more source

Diffusion from convection [PDF]

open access: yesSciPost Physics, 2020
We introduce non-trivial contributions to diffusion constants in generic many-body systems with Hamiltonian dynamics arising from quadratic fluctuations of ballistically propagating, i.e. convective, modes. Our result is obtained by expanding the current operator in terms of powers of local and quasi-local conserved quantities.
Medenjak, Marko   +2 more
openaire   +3 more sources

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

Novel Numerical Method Based on the Analog Equation Method for a Class of Anisotropic Convection-Diffusion Problems

open access: yesFrontiers in Physics, 2022
In this work, a CMFS method based on the analogy equation method, the radial basis function and the method of fundamental solutions for linear and nonlinear convection-diffusion equations in anisotropic materials is presented.
L Zhang   +8 more
doaj   +1 more source

Exploration of interfacial chemistry and physical movement in fixed-bed adsorption/desorption of anthocyanins with and without in-process ultrasonication. [PDF]

open access: yesUltrason Sonochem
The fundamental physics underlying the fixed-bed adsorption and desorption of anthocyanins was systematically investigated, both with and without in-process ultrasonication.
Zhu R   +8 more
europepmc   +2 more sources

Method of approximations for the convection-dominated anomalous diffusion equation in a rectangular plate using high-resolution compact discretization

open access: yesMethodsX, 2022
The present method describes the high-resolution compact discretization method for the numerical solution of the nonlinear fractal convection-diffusion model on a rectangular plate by employing the Hausdorff distance metric.
Navnit Jha, Shikha Verma
doaj   +1 more source

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