نتایج جستجو برای: adaptive grid

تعداد نتایج: 279580  

2003
Jonas Persson Lina von Sydow

In this paper we present an adaptive technique to solve the multidimensional Black-Scholes equation. The number of grid-points required for a given tolerance of the local discretization errors is reduced substantially when compared to a standard equidistant grid. Using our adaptive methods in space and time we have control of the local discretization errors and can refine the grid where needed ...

2005
Adrian Burri Andreas Dedner Robert Klöfkorn Mario Ohlberger

In this contribution we describe and evaluate an efficient implementation of an adaptive and parallel grid (ALUGrid) within the Distributed and Unified Numerics Environment DUNE. A generalization of the serial grid interface of DUNE, described in [1], to the adaptive and parallel case is discussed and example computations using the grid interface are presented. The computations are compared wit...

Journal: :Physica D: Nonlinear Phenomena 1992

Journal: :Geophysical Journal International 1995

2007
Joyce E. Penner Natalia Andronova Robert C. Oehmke Jonathan Brown Quentin F. Stout Christiane Jablonowski Bram van Leer Kenneth G. Powell Michael Herzog

One of the most important advances needed in global climate models is the development of atmospheric General Circulation Models (GCMs) that can reliably treat convection. Such GCMs require high resolution in local convectively active regions, in both the horizontal and vertical directions. Our research is characterized by an interdisciplinary approach involving atmospheric science, computer sci...

Journal: :Journal of the Japan Society for Aeronautical and Space Sciences 1995

Journal: :the modares journal of electrical engineering 2010
syed saeed - mohtavipour mohsen - parsa moghadam mahmood reza - haghifam

a critical protection requirement for grid connected distributed generators (dg) is anti-islanding protection. in this paper, a new islanding detection method for any possible network loading is proposed based on utilizing and combining various system parameter indices. in order to secure the detection of islanding, eight intentional disturbances are imposed to the system under study in which t...

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