Results 11 to 20 of about 1,101,560 (296)

Construction and test of a moving boundary model for negative streamer discharges [PDF]

open access: yes, 2007
Starting from the minimal model for the electrically interacting particle densities in negative streamer discharges, we derive a moving boundary approximation for the ionization fronts.
Brau, Fabian   +4 more
core   +4 more sources

Well-posedness of a parabolic moving-boundary problem in the setting of Wasserstein gradient flows [PDF]

open access: yes, 2010
We develop a gradient-flow framework based on the Wasserstein metric for a parabolic moving-boundary problem that models crystal dissolution and precipitation. In doing so we derive a new weak formulation for this moving-boundary problem and we show that
Peletier, Mark A., Portegies, Jacobus W.
core   +2 more sources

Moving boundary analysis of fractured shale gas reservoir

open access: yes工程科学学报, 2019
Shale gas reservoirs are extremely tight, their pores are mainly nano-micron size, and their gas flow resistance is greater than that of conventional gases.
Qian QI, Wei-yao ZHU
doaj   +1 more source

New energy effect in non-cylindrical domains with a thermally insulated moving boundary

open access: yesРоссийский технологический журнал, 2023
Objectives. To develop mathematical model representations of the energy effect in non-cylindrical domains having a thermally insulated moving boundary; to introduce a new boundary condition for thermal insulation of a moving boundary both for locally ...
E. M. Kartashov
doaj   +1 more source

Consistent dirichlet boundary conditions for numerical solution of moving boundary problems [PDF]

open access: yes, 2008
We consider the imposition of Dirichlet boundary conditions in the finite element mod-elling of moving boundary problems in one and two dimensions for which the total mass is prescribed.
Baines, M.J.   +2 more
core   +2 more sources

Simulation of incompressible viscous flows around moving objects by a variant of immersed boundary-Lattice Boltzmann method [PDF]

open access: yes, 2009
A variant of immersed boundary-lattice Boltzmann method (IB-LBM) is presented in this paper to simulate incompressible viscous flows around moving objects.
Anderson   +42 more
core   +1 more source

Boundary states for moving D-branes [PDF]

open access: yes, 1997
We determine the boundary state for both the NS-NS and R-R sectors of superstring theory. We show how they are modified under a boost. The boosted boundary state is then used for computing the interaction of two D-branes moving with constant velocity ...
Ademollo   +24 more
core   +3 more sources

Moving Dirichlet boundary conditions [PDF]

open access: yesESAIM: Mathematical Modelling and Numerical Analysis, 2014
This paper develops a framework to include Dirichlet boundary conditions on a subset of the boundary which depends on time. In this model, the boundary conditions are weakly enforced with the help of a Lagrange multiplier method. In order to avoid that the ansatz space of the Lagrange multiplier depends on time, a bi-Lipschitz transformation, which ...
openaire   +1 more source

Mathematical models of nonlinear longitudinal-cross oscillations of object with moving borders

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
The nonlinear formulation of problems for describing longitudinal-cross oscillations of objects with moving borders is noted. These mathematical models consist of a system of two nonlinear partial differential equations with the higher time derivative of
Valeriy N Anisimov, Vladislav L Litvinov
doaj   +1 more source

Changing Time History in Moving Boundary Problems [PDF]

open access: yes, 1990
A class of diffusion-stress equations modeling transport of solvent in glassy polymers is considered. The problem is formulated as a one-phase Stefan problem.
Cohen, Donald S., Erneux, Thomas
core   +1 more source

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