Zobrazeno 1 - 10
of 1 114
pro vyhledávání: '"KATSAOUNIS, A"'
We consider a non-conservative nonlinear Schrodinger equation (NCNLS) with time-dependent coefficients, inspired by a water waves problem. This problem does not have mass or energy conservation, but instead mass and energy change in time under explic
Externí odkaz:
http://arxiv.org/abs/2401.16835
We consider the incompressible axisymmetric Navier-Stokes equations with swirl as an idealized model for tornado-like flows. Assuming an infinite vortex line which interacts with a boundary surface resembles the tornado core, we look for stationary s
Externí odkaz:
http://arxiv.org/abs/2311.10575
We consider an infinite vortex line in a fluid which interacts with a boundary surface as a simplified model for tornadoes. We study self-similar solutions for stationary axisymmetric Navier-Stokes equations and investigate the types of motion which
Externí odkaz:
http://arxiv.org/abs/2301.11090
We propose a new approach for solving systems of conservation laws that admit a variational formulation of the time-discretized form, and encompasses the p-system or the system of elastodynamics. The approach consists of using constrained gradient de
Externí odkaz:
http://arxiv.org/abs/2208.13657
Autor:
Jiang, Zhuwu, Wang, Yuchang, Mantzavinos, Dionissios, Katsaounis, Alexandros, Bai, Xue, Cheng, Shunjian, Zheng, Chaoqun, Shen, Jyunhong, Zhang, Hongyu
Publikováno v:
In Process Safety and Environmental Protection November 2024 191 Part A:995-1009
Autor:
Liu, Zhongda, Kajtazi, Ardiana, Lynen, Frédéric, Askari, Najmeh, Dewil, Raf, Ladas, Spyridon, Kyriakou, Georgios, Katsaounis, Alexandros
Publikováno v:
In Journal of Environmental Chemical Engineering October 2024 12(5)
We introduce a new structure preserving, second order in time relaxation-type scheme for approximating solutions of the Schr\"odinger-Poisson system. More specifically, we use the Crank-Nicolson scheme as a time stepping mechanism, whilst the nonline
Externí odkaz:
http://arxiv.org/abs/2103.04903
Autor:
Martynowicz, Paweł1 (AUTHOR) pmartyn@agh.edu.pl, Katsaounis, Georgios M.2 (AUTHOR) katsage@mail.ntua.gr, Mavrakos, Spyridon A.2 (AUTHOR) mavrakos@naval.ntua.gr
Publikováno v:
Energies (19961073). Mar2024, Vol. 17 Issue 6, p1507. 30p.
The simulation of long, nonlinear dispersive waves in bounded domains usually requires the use of slip-wall boundary conditions. Boussinesq systems appearing in the literature are generally not well-posed when such boundary conditions are imposed, or
Externí odkaz:
http://arxiv.org/abs/2008.10754
In this paper we consider the numerical solution of Boussinesq-Peregrine type systems by the application of the Galerkin finite element method. The structure of the Boussinesq systems is explained and certain alternative nonlinear and dispersive term
Externí odkaz:
http://arxiv.org/abs/2005.09679