Sökning: "Beräkningsvetenskap med inriktning mot numerisk analys"

Visar resultat 1 - 5 av 40 avhandlingar innehållade orden Beräkningsvetenskap med inriktning mot numerisk analys.

  1. 1. Hybrid Methods for Unsteady Fluid Flow Problems in Complex Geometries

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jing Gong; Uppsala universitet.; Uppsala universitet.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hybrid methods; finite difference methods; finite volume methods; coupling procedure; stability; efficiency; artificial dissipation; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : In this thesis, stable and efficient hybrid methods which combine high order finite difference methods and unstructured finite volume methods for time-dependent initial boundary value problems have been developed. The hybrid methods make it possible to combine the efficiency of the finite difference method and the flexibility of the finite volume method. LÄS MER

  2. 2. Stable and High-Order Finite Difference Methods for Multiphysics Flow Problems

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jens Berg; Jan Nordström; Per Lötstedt; David Zingg; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Summation-by-parts; Simultaneous Approximation Term; Stability; High-order accuracy; Finite difference methods; Dual consistency; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : Partial differential equations (PDEs) are used to model various phenomena in nature and society, ranging from the motion of fluids and electromagnetic waves to the stock market and traffic jams. There are many methods for numerically approximating solutions to PDEs. LÄS MER

  3. 3. Stable and High-Order Finite Difference Methods for Multiphysics Flow Problems

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jens Berg; Jan Nordström; Per Lötstedt; David Zingg; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Summation-by-parts; Simultaneous Approximation Term; Stability; High-order accuracy; Finite difference methods; Dual consistency; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : Partial differential equations (PDEs) are used to model various phenomena in nature and society, ranging from the motion of fluids and electromagnetic waves to the stock market and traffic jams. There are many methods for numerically approximating solutions to PDEs. LÄS MER

  4. 4. Weak Boundary and Interface Procedures for Wave and Flow Problems

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Qaisar Abbas; Jan Nordström; Peter Eliasson; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; weak boundary conditions; multiple penalty; finite difference methods; summation-by-parts; high order scheme; hybrid methods; MUSCL scheme; shocks; stability; energy estimate; steady-state; non-reflecting; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : In this thesis, we have analyzed the accuracy and stability aspects of weak boundary and interface conditions (WBCs) for high order finite difference methods on Summations-By-Parts (SBP) form. The numerical technique has been applied to wave propagation and flow problems. LÄS MER

  5. 5. Weak Boundary and Interface Procedures for Wave and Flow Problems

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Qaisar Abbas; Jan Nordström; Peter Eliasson; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; weak boundary conditions; multiple penalty; finite difference methods; summation-by-parts; high order scheme; hybrid methods; MUSCL scheme; shocks; stability; energy estimate; steady-state; non-reflecting; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

    Sammanfattning : In this thesis, we have analyzed the accuracy and stability aspects of weak boundary and interface conditions (WBCs) for high order finite difference methods on Summations-By-Parts (SBP) form. The numerical technique has been applied to wave propagation and flow problems. LÄS MER