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Numerical studies of a class of linear solvers for fine-scale petroleum reservoir simulation
Springer Science and Business Media LLC - Tập 18 - Trang 93-102 - 2016
Numerical simulation based on fine-scale reservoir models helps petroleum engineers in understanding fluid flow in porous media and achieving higher recovery ratio. Fine-scale models give rise to large-scale linear systems, and thus require effective solvers for solving these linear systems to finish simulation in reasonable turn-around time. In this paper, we study convergence, robustness, and ef...... hiện toàn bộ
Implicit treatment of molar mass equations in secondary oil migration
Springer Science and Business Media LLC - Tập 4 - Trang 191-196 - 2014
The hydrocarbon migration can be described by a coupled set of partial differential equations describing the dynamics of the temperature, component flow, pressure and velocity. A sequential solution procedure where the component flow is solved explicitly, gives severe restrictions on the time step given by the CFL condition. In this paper an implicit solution procedure is given and results from nu...... hiện toàn bộ
MooNMD – a program package based on mapped finite element methods
Springer Science and Business Media LLC - Tập 6 - Trang 163-170 - 2004
The basis of mapped finite element methods are reference elements where the components of a local finite element are defined. The local finite element on an arbitrary mesh cell will be given by a map from the reference mesh cell. This paper describes some concepts of the implementation of mapped finite element methods. From the definition of mapped finite elements, only local degrees of freedom ar...... hiện toàn bộ
The influence of partitioning on Domain Decomposition convergence rates
Springer Science and Business Media LLC - Tập 18 - Trang 53-63 - 2017
This paper discusses the effects that partitioning has on the convergence rate of Domain Decomposition. When Finite Elements are employed to solve a second order elliptic partial differential equation with strong convection and/or anisotropic diffusion, the shape and alignment of a partition’s parts significantly affect the Domain Decomposition convergence rate. Given a PDE, if b is the direction ...... hiện toàn bộ
Special issue in computing and visualization in science (CVS) related to the European Multigrid conference, EMG 2010
Springer Science and Business Media LLC - Tập 14 - Trang 1-1 - 2011
Stable free surface flows with the lattice Boltzmann method on adaptively coarsened grids
Springer Science and Business Media LLC - Tập 12 - Trang 247-263 - 2008
In this paper we will present an algorithm to perform free surface flow simulations with the lattice Boltzmann method on adaptive grids. This reduces the required computational time by more than a factor of three for simulations with large volumes of fluid. To achieve this, the simulation of large fluid regions is performed with coarser grid resolutions. We have developed a set of rules to dynamic...... hiện toàn bộ
PostDock: A novel visualization tool for the analysis of molecular docking
Springer Science and Business Media LLC - Tập 12 - Trang 1-7 - 2006
“PostDock”, a new visualization tool for the analysis and comparison of molecular docking results is described. It processes a docking results database and displays an interactive pseudo-3D snapshot of multiple ligand docking poses such that their docking energies and docking poses are visually encoded for rapid assessment. The docking energies are represented by a transparency scale whereas the d...... hiện toàn bộ
Consolidation of concentrated suspensions – numerical simulations using a two-phase fluid model
Springer Science and Business Media LLC - Tập 3 - Trang 39-45 - 2014
We investigate numerically a mathematical model of a consolidation process of a dense, flocculated suspension. The suspension is treated as a two-constituent mixture of a fluid and solid particles by an Eulerian two-phase fluid model. We characterize the suspension by constitutive relations concerning the stresses, interaction forces and inter-particle forces. A numerical solver for a two dimensio...... hiện toàn bộ
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