Abstract In this paper we treat subjects which are relevant in the context of iterative methods in implicit time integration for compressible flow simulations. We present a novel renumbering technique, some strategies for choosing the time step in the implicit time integration, and a novel implementation of a matrix-free evaluation for matrix-vector products. For the linearized compressible Euler equations, we present various comparative studies within the QUADFLOW package concerning preconditioning techniques, ordering methods, time stepping strategies, and different implementations of the matrix-vector product. The main goal is to improve efficiency and robustness of the iterative method used in the flow solver.
Iterative Solvers for Discretized Stationary Euler Equations
2010-01-01
29 pages
Article/Chapter (Book)
Electronic Resource
English
Euler Equation , Order Method , Iterative Solver , Compressible Euler Equation , NACA0012 Airfoil Engineering , Aerospace Technology and Astronautics , Classical Continuum Physics , Engineering Fluid Dynamics , Appl.Mathematics/Computational Methods of Engineering , Fluid- and Aerodynamics , Numerical and Computational Physics
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