全部文献期刊会议图书|学者科研项目
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作者:Christoph Reisinger , Julen Rotaetxe Arto
来源:[J].Journal of Scientific Computing(IF 1.71), 2017, Vol.72 (1), pp.198-230Springer
摘要:... These schemes make use of a wide stencil to achieve convergence and result in discretization matrices that are less sparse and less local than those coming from standard finite difference schemes. This leads to computational difficulties not encountered there. In particular,...
作者:Junyu Lai , Justin W.L. Wan , Shuhua Zhang
来源:[J].Applied Mathematics and Computation(IF 1.349), 2019, Vol.350, pp.11-31Elsevier
摘要:... To ensure our scheme is fully implicit and unconditionally monotone, we combine wide stencil with narrow stencil in the discretization. We address coupling between unknown variables and emission controls using policy iteration. We solve the coupled systems of HJB equation...
作者:Hannes Frenander , Jan Nordström
来源:[J].Numerical Methods for Partial Differential Equations(IF 1.212), 2018, Vol.34 (2), pp.501-517Wiley
摘要:... For approximating the second derivative, a wide stencil is used, which simplifies implementation and stability proofs. However, it also introduces spurious, oscillating, modes for all mesh sizes. We prove that the size of the spurious modes are equal to the size of the trunc...
作者:Chao Zhang , Qibing Li , Song Fu ...
来源:[J].Journal of Computational Physics(IF 2.138), 2018, Vol.363, pp.329-353Elsevier
摘要:... Comparing with high-order finite volume gas-kinetic methods, the current scheme is more compact and efficient by avoiding wide stencils on unstructured meshes. Unlike the traditional CPR method where the inviscid and viscous terms are treated differently, the inviscid and vi...
作者:S.H. Lee , P. Jenny , H.A. Tchelepi
来源:[J].Computational Geosciences(IF 1.422), 2002, Vol.6 (3-4), pp.353-379Springer
摘要:... In order to perform flow simulation efficiently, we employ a two-level preconditioner for solving the linear equations that results from the wide stencil of the FCFD scheme. The individual block, composed of cells that form a structured grid, serves as the local level; the hi...
作者:H. Luo , J.D. Baum , R. L?hner
来源:[B].Springer Berlin Heidelberg2009Springer
摘要:... As in classical finite element methods, accuracy is obtained by means of high-order polynomial approximation within an element rather than by wide stencils as in the case of finite volume methods. The physics of wave propagation is, however, accounted for by solving the Riema...
作者:H. Luo , J.D. Baum , R. Löhner
来源:[B].Springer Berlin Heidelberg2009Springer
摘要:... As in classical finite element methods, accuracy is obtained by means of high-order polynomial approximation within an element rather than by wide stencils as in the case of finite volume methods. The physics of wave propagation is, however, accounted for by solving the Riema...

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