Results 1 to 10 of about 179,449 (293)

Diffusion and convection in nature. [PDF]

Eur 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   +5 more sources

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

Ultrasonics Sonochemistry
The fundamental physics underlying the fixed-bed adsorption and desorption of anthocyanins was systematically investigated, both with and without in-process ultrasonication.
Rui Zhu, Jiabao Li, Sivakumar Manickam, Yaning Shi, Yanxian Dai, Yue Wu, Dandan Li, Yongbin Han, Yang Tao   +8 more
doaj   +2 more sources

A survey of numerical schemes for transportation equation [PDF]

E3S 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

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

Mathematics, 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, Ru-Yun Chen, Chia-Cheng Tsai   +2 more
doaj   +1 more source

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

Frontiers 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, L Zhang, FZ Wang, FZ Wang, J Zhang, J Zhang, YY Wang, S Nadeem, TA Nofal   +8 more
doaj   +1 more source

New traveling wave solutions of a nonlinear diffusion–convection equation by using standard tanh method

Tikrit Journal of Pure Science, 2023
Exact solutions of traveling wave are acquired by employ a relatively new technique which is called standard tanh method for a nonlinear diffusion–convection equation.
Seham I. Aziz, Wafaa M. Taha, Raad A. Hameed, Ibrahem M. Taha   +3 more
doaj   +1 more source

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

MethodsX, 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

A new formulation of finite difference and finite volume methods for solving a space fractional convection–diffusion model with fewer error estimates

Advances in Difference Equations, 2021
Convection and diffusion are two harmonious physical processes that transfer particles and physical quantities. This paper deals with a new aspect of solving the convection–diffusion equation in fractional order using the finite volume method and the ...
Reem Edwan, Shrideh Al-Omari, Mohammed Al-Smadi, Shaher Momani, Andreea Fulga   +4 more
doaj   +1 more source

Layer resolving numerical scheme for singularly perturbed parabolic convection-diffusion problem with an interior layer

MethodsX, 2023
Singularly perturbed parabolic convection-diffusion problem with interior layer is a type of singularly perturbed boundary value problems which have sign change properties in the coefficient function of the convection term.
Gemadi Roba Kusi, Aknaw Hailemariam Habte, Tesfaye Aga Bullo   +2 more
doaj   +1 more source

Numerical Simulation of Columnar Crystal/Equiaxed Crystal Formation Model in a Convection Diffusion-multiphase Transformation System

Cailiao gongcheng, 2017
The horizontal rapid solidification of Fe-Bi-Mn free-cutting alloys were simulated by using diffusion-governed phase transformation kinetics. The three-dimensional solidification model for a convection diffusion-multiphase transformation system was built.
HE Yin-hua, WANG Fa-zhan
doaj   +1 more source