Applied and Computational Mathematics

Volume 7, Issue 1, February 2018

  • A High Order Compact ADI Method for Solving 3D Unsteady Convection Diffusion Problems

    Yongbin Ge, Fei Zhao, Jianying Wei

    Issue: Volume 7, Issue 1, February 2018
    Pages: 1-10
    Received: 3 December 2017
    Accepted: 13 December 2017
    Published: 12 January 2018
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    Abstract: In this paper, we develop a rational high order compact alternating direction implicit (RHOC ADI) method for solving the three dimensional (3D) unsteady convection diffusion equation. The present scheme, based on the idea of the fourth order rational compact finite difference operator for the spatial discretization and the Crank-Nicolson method for... Show More
  • A Stable and Convergent Finite Difference Scheme for 2D Incompressible Nonlinear Viscoelastic Fluid Dynamics Problem

    Yanhua Cao, Zhendong Luo

    Issue: Volume 7, Issue 1, February 2018
    Pages: 11-18
    Received: 4 December 2017
    Accepted: 15 December 2017
    Published: 12 January 2018
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    Abstract: In this study, a stable and convergent finite difference (FD) scheme based on staggered meshes for two-dimensional (2D) incompressible nonlinear viscoelastic fluid dynamics problem including the velocity vector field and the pressure field as well as the deformation tensor matrix is established in order to find numerical solutions for the problem. ... Show More
  • A Reduced-Order Extrapolating Finite Difference Iterative Scheme for 2D Generalized Nonlinear Sine-Gordon Equation

    Hong Xia, Fei Teng, Zhendong Luo

    Issue: Volume 7, Issue 1, February 2018
    Pages: 19-25
    Received: 17 December 2017
    Accepted: 2 January 2018
    Published: 18 January 2018
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    Abstract: In this study, a reduced-order extrapolating finite difference iterative (ROEFDI) scheme holding sufficiently high accuracy but containing very few degrees of freedom for the two-dimensional (2D) generalized nonlinear Sine-Gordon equation is built via the proper orthogonal decomposition. The stability and convergence of the ROEFDI solutions are ana... Show More
  • Topological Structure of Riesz Sequence Spaces

    Merve Temizer Ersoy, Bilal Altay, Hasan Furkan

    Issue: Volume 7, Issue 1, February 2018
    Pages: 26-30
    Received: 29 December 2017
    Accepted: 12 January 2018
    Published: 20 January 2018
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    Abstract: In this paper, to be the Riesz matrix is symbolized by , it is defined the spaces and where for instance and computed its duals (α-dual, β-dual and γ-dual). Furthermore, it is investigated topological structure of and determined necessary and sufficient conditions for a matrix to map , or into or .