Essays about: "Discontinuous coefficients"

Found 4 essays containing the words Discontinuous coefficients.

  1. 1. Summation By Parts Finite Difference Methods with Simultaneous Approximation Terms for the Heat Equation with Discontinuous Coefficients

    University essay from Linnéuniversitetet/Institutionen för matematik (MA)

    Author : Niklas Kåhlman; [2019]
    Keywords : Finite Difference Method; FDM; Summation By Parts; Simultaneous Approximation Terms; SBP-SAT; Heat Equation; Poisson s Equation; Discontinuous Coefficients; Piecewise Constant Coefficients; Convergence; Dual Consistency; Stability;

    Abstract : In this thesis we will investigate how the SBP-SAT finite difference method behave with and without an interface. As model problem, we consider the heat equation with piecewise constant coefficients. The thesis is split in two main parts. READ MORE

  3. 2. Summation By Part Methods for Poisson's Equation with Discontinuous Variable Coefficients

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Thomas Nystrand; [2014]
    Keywords : SBP; SAT; Summation By Parts; Poisson equation; Discontinuous coefficients; Numerical methods; oil reservoir; improved boundary; weak boundary;

    Abstract : Nowadays there is an ever increasing demand to obtain more accurate numericalsimulation results while at the same time using fewer computations. One area withsuch a demand is oil reservoir simulations, which builds upon Poisson's equation withvariable coefficients (PEWVC). READ MORE

  4. 3. Last Minute Bidding on Tradera

    University essay from Lunds universitet/Nationalekonomiska institutionen

    Author : David Nordström; [2011]
    Keywords : Last minute bidding; Sniping; Online auction; Shill; Incremental bidding; Second-price auction; Bayesian game; Business and Economics;

    Abstract : In online auctions bidding frequency tends to increase towards the last minutes of the auction. This thesis investigates why bidders might choose to engage in last minute bidding, sniping, in Tradera auctions (Tradera is a Swedish subsidiary of eBay). Tradera uses a hard-close rule and a second-price rule. READ MORE

  5. 4. Simulation of Wave Propagation in Discontinuous Media and Complex Geometries

    University essay from Institutionen för informationsteknologi

    Author : Kristoffer Virta; [2010]
    Keywords : ;

    Abstract : A strictly stable high order finite difference (HOFD) scheme for the scalar wave equation with discontinuous coefficients corresponding to inhomogeneity in the underlying media is constructed using summation - by - parts (SBP) operators. The domain of the equation is allowed to be complex in the sense that it can not be smoothly mapped from the unit square. READ MORE