Solving ordinary differential equations I (2nd revised. ed.): nonstiff problems
Solving ordinary differential equations I (2nd revised. ed.): nonstiff problems
Summation by parts for finite difference approximations for d/dx
Journal of Computational Physics
Designing an efficient solution strategy for fluid flows
Journal of Computational Physics
Journal of Computational Physics
Journal of Computational Physics
High-order finite difference methods, multidimensional linear problems, and curvilinear coordinates
Journal of Computational Physics
Entropy splitting for high-order numerical simulation of compressible turbulence
Journal of Computational Physics
Unified Analysis of Discontinuous Galerkin Methods for Elliptic Problems
SIAM Journal on Numerical Analysis
Entropy Splitting for High Order Numerical Simulation of Vortex Sound at Low Mach Numbers
Journal of Scientific Computing
Boundary Procedures for Summation-by-Parts Operators
Journal of Scientific Computing
On Coordinate Transformations for Summation-by-Parts Operators
Journal of Scientific Computing
Summation by parts operators for finite difference approximations of second derivatives
Journal of Computational Physics
Journal of Scientific Computing
On the order of accuracy for difference approximations of initial-boundary value problems
Journal of Computational Physics
Error Bounded Schemes for Time-dependent Hyperbolic Problems
SIAM Journal on Scientific Computing
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A new way of deriving strictly stable high order difference operators for partial differential equations (PDE) is demonstrated for the 1D convection diffusion equation with variable coefficients. The derivation is based on a diffusion term in conservative, i.e. self-adjoint, form. Fourth order accurate difference operators are constructed by mass lumping Galerkin finite element methods so that an explicit method is achieved. The analysis of the operators is confirmed by numerical tests. The operators can be extended to multi dimensions, as we demonstrate for a 2D example. The discretizations are also relevant for the Navier---Stokes equations and other initial boundary value problems that involve up to second derivatives with variable coefficients.