Zobrazeno 1 - 10
of 275
pro vyhledávání: '"VASILYEVA, MARIA"'
We consider image denoising using a nonlinear diffusion process, where we solve unsteady partial differential equations with nonlinear coefficients. The noised image is given as an initial condition, and nonlinear coefficients are used to preserve th
Externí odkaz:
http://arxiv.org/abs/2409.15952
Autor:
Vasilyeva, Maria
In this paper, we consider a time-dependent discrete network model with highly varying connectivity. The approximation by time is performed using an implicit scheme. We propose the coarse scale approximation construction of network models based on th
Externí odkaz:
http://arxiv.org/abs/2404.16554
Autor:
Vasilyeva, Maria
In this work, we present an efficient way to decouple the multicontinuum problems. To construct decoupled schemes, we propose Implicit-Explicit time approximation in general form and study them for the fine-scale and coarse-scale space approximations
Externí odkaz:
http://arxiv.org/abs/2404.16576
Autor:
Spiridonov, Denis, Vasilyeva, Maria
This work presents the application of the non-local multicontinuum method (NLMC) for the Darcy-Forchheimer model in fractured media. The mathematical model describes a nonlinear flow in fractured porous media with a high inertial effect and flow spee
Externí odkaz:
http://arxiv.org/abs/2304.13480
Coupled nonlinear system of reaction-diffusion equations describing multi-component (species) interactions with heterogeneous coefficients is considered. Finite volume method based approximation for the space is used to construct semi-discrete form f
Externí odkaz:
http://arxiv.org/abs/2209.04495
In this work, we consider the spatial-temporal multi-species competition model. A mathematical model is described by a coupled system of nonlinear diffusion-reaction equations. We use a finite volume approximation with semi-implicit time approximatio
Externí odkaz:
http://arxiv.org/abs/2209.02867
Autor:
Vasilyeva, Maria
We consider the coupled system of equations that describe flow in fractured porous media. To describe such types of problems, multicontinuum and multiscale approaches are used. Because in multicontinuum models, the permeability of each continuum has
Externí odkaz:
http://arxiv.org/abs/2209.01158
Numerical treatment of the problem of two-dimensional viscous fluid flow in and around circular porous inclusions is considered. The mathematical model is described by Navier-Stokes equation in the free flow domain $\Omega_f$ and nonlinear convective
Externí odkaz:
http://arxiv.org/abs/2209.01155
Publikováno v:
In Computer Methods in Applied Mechanics and Engineering 1 August 2024 428
In this work, we introduce a time memory formalism in poroelasticity model that couples the pressure and displacement. We assume this multiphysics process occurs in multicontinuum media. The mathematical model contains a coupled system of equations f
Externí odkaz:
http://arxiv.org/abs/2201.07638