Results 241 to 250 of about 1,541,248 (274)

Coarse grid correction scheme for implicit multiblock Euler calculations

AIAA Journal, 1995
Summary: A coarse grid correction scheme is used to bring global influence to implicit multiblock calculations. Compared to using only explicit coupling between the blocks, a considerable reduction in the number of time steps needed to reach steady state has been observed for transonic and subsonic flows.
Jenssen, Carl B., Weinerfelt, Per Å.
openaire   +1 more source

Implicit schemes for unsteady Euler equations on triangular meshes

International Journal for Numerical Methods in Fluids, 1994
AbstractAn implicit finite element method is presented for the solution of steady and unsteady inviscid compressible flows on triangular meshes under transonic conditions. The method involves a first‐order time‐stepping scheme with a finite element discretization that reduces to central differencing on a rectangular mesh.
Sens, A. S., Mortchelewicz, G. D.
openaire   +2 more sources

Implicit Kinetic Schemes for the Euler and the Ideal Magnetohydrodynamics Equations

41st Aerospace Sciences Meeting and Exhibit, 2003
The implicit kinetic schemes, namely the Kinetic Flux-Vector Split (KFVS) and the Kinetic Wave/Particle Split (KWPS) schemes are derived for the Euler and the ideal MHD equations. The schemes are applied to compute the flow in a 1-D shock-tube and the 2-D flowfield due to a cylindrical explosion with and without the magnetic field.
Ramesh K. Agarwal, H. S. R. Reksoprodjo
openaire   +1 more source

Multigrid solution of the Euler equations using implicit schemes

AIAA Journal, 1985
On utilise une methode multigrille du type factorisation approchee couplee a un schema de direction alternee implicite pour resoudre les equations d'Euler pour l'ecoulement transsonique sur un profil aerodynamique.
A. JAMESON, S. YOON
openaire   +1 more source

Multiple-gridding of the Euler equations with an implicit scheme

6th Computational Fluid Dynamics Conference Danvers, 1983
The multiple-grid scheme of Ni (1981) for the solution of the unsteady Euler equations for quasi-one-dimensional transonic flow problems is analyzed according to its ability to accelerate convergence to a steady state solution, its applicability to an implicit scheme, its accuracy, and its stability limits.
openaire   +1 more source

Well-Balanced Time Implicit Formulation of Relaxation Schemes for the Euler Equations

SIAM Journal on Scientific Computing, 2008
We show how to derive time implicit formulations of relaxation schemes for the Euler equations for real materials in several space dimensions. In the fully time explicit setting, the relaxation approach has been proved to provide efficient and robust methods.
Christophe Chalons, Frédéric Coquel, Claude Marmignon   +2 more
openaire   +1 more source

Euler implicit/explicit iterative scheme for the stationary Navier–Stokes equations

Numerische Mathematik, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Multigrid solution of the Euler equations using implicit ENO schemes

28th Aerospace Sciences Meeting, 1990
In this paper, multigrid technique and implicit E N 0 scheme are combined to yield an efficient and accurate solution procedure for the calculation of steady-state solutions of the Euler equations. The recent developed essentially nonoscillatory schemes have some desirable properties, such as nonoscillatory and uniformly high order even a t critical ...
J. YANG, K. CHU, C. LIU
openaire   +1 more source

Implicit finite element schemes for the stationary compressible Euler equations

International Journal for Numerical Methods in Fluids, 2011
SUMMARYA semi‐implicit finite element scheme and a Newton‐like solver are developed for the stationary compressible Euler equations. Since the Galerkin discretization of the inviscid fluxes is potentially oscillatory and unstable, the troublesome antidiffusive part is constrained within the framework of algebraic flux correction.
Gurris, Marcel, Kuzmin, Dmitri, Turek, Stefan   +2 more
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Asymptotic Error Expansions for Stiff Equations: The Implicit Euler Scheme

SIAM Journal on Numerical Analysis, 1990
This paper discusses the existence of an asymptotic expansion for the global error of the implicit Euler scheme applied to stiff nonlinear systems of ordinary differential equations. It is shown that in strongly stiff situations, a full asymptotic expansion exists at all gridpoints.
W. Auzinger, R. Frank, F. Macsek
openaire   +1 more source