Results 51 to 60 of about 22,621 (165)

Effects of Composite Rheology on Plate‐Like Behavior in Global‐Scale Mantle Convection

Geophysical Research Letters, 2023
Earth's upper mantle rheology controls lithosphere‐asthenosphere coupling and thus surface tectonics. Rock deformation experiments and seismic anisotropy measurements indicate that composite rheology (co‐existing diffusion and dislocation creep) occurs ...
Maëlis Arnould, Tobias Rolf, Antonio Manjón‐Cabeza Córdoba   +2 more
doaj   +1 more source

Convective Diffusion of an Enzyme Reaction [PDF]

SIAM Journal on Applied Mathematics, 1977
The evolution of a simple enzyme reaction being convected by Poiseuille flow in a semi-infinite tube is considered. When the effects of diffusion are ignored, the solutions for the concentrations of enzyme and substrate are analogues of the spatially independent case. When small but nonzero diffusion coefficients are admitted the solutions are modified
openaire   +3 more sources

Exact traveling wave solutions of fast reaction–diffusion–convectionequations based on the Lambert function W

Partial Differential Equations in Applied Mathematics, 2020
A particular function defined in terms of the Lambert function W is shown to serve as the basis for exact traveling wave solutions to several reaction–diffusion–convection​ (RDC) equations involving rational, non-linear diffusion terms. These represent a
Brian Wesley Williams
doaj   +1 more source

XLVI. Diffusive convection [PDF]

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1898
n ...
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NUMERICAL ANALYSIS OF AN INVERSE PROBLEM ORIGINATED IN PHENOMENON OF POLLUTION AIR URBAN

Selecciones Matemáticas, 2016
This paper presents the calibration study of a two - dimensional mathematical model for the problem of urban air pollution. It is mainly assumed that air pollution is afected by wind convection, diffusion and chemical reactions of pollutants ...
Aníbal Coronel, Ian Hess
doaj   +1 more source

On a convection-diffusion equation with partial diffusivity [PDF]

Elliptic and Parabolic Problems, 2002
We consider the Cauchy problem for the nonlinear degenerate equation in R div(A∇u) + u(b · ∇u)− ∂tu = f(·, u), where A ≥ 0 is a constant symmetric matrix and ker(A) is generated by b. We prove the existence of a local viscosity solution u and we study the interior regularity of u in the framework of Hormander type operators.
openaire   +1 more source

Exploration of wave dynamics and soliton behavior in a nonlinear 3D convection-diffusion wave equation

Results in Engineering
In this work, a two-dimensional nonlinear wave convection-diffusion equation is studied using the symmetry-based techniques, specifically Lie-symmetry approach.
Faiza Arif, F.D. Zaman, F.M. Mahomed, Adil Jhangeer   +3 more
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Janus Droplet Formation via Thermally Induced Phase Separation: A Numerical Model with Diffusion and Convection. [PDF]

Langmuir, 2022
Zhang H, Wang F, Nestler B.
europepmc   +1 more source

Three level implicit tension spline scheme for solution of Convection-Reaction-Diffusion equation

Ain Shams Engineering Journal, 2018
In this work, the numerical approximation of Convection-Reaction-Diffusion equation is investigated using the method based on tension spline function and finite difference approximation.
H.S. Shekarabi, J. Rashidinia
doaj   +1 more source

Higher-Order Compact Finite Difference for Certain PDEs in Arbitrary Dimensions

Journal of Function Spaces, 2020
In this paper, we first present the expression of a model of a fourth-order compact finite difference (CFD) scheme for the convection diffusion equation with variable convection coefficient.
Yan Gao, Songlin Liu
doaj   +1 more source