Non-reflecting boundary conditions for 2 Danisotropic elastodynamics
نویسندگان
چکیده
منابع مشابه
Non-reflecting boundary conditions for waveguides
New non-reflecting boundary conditions are introduced for the solution of the Helmholtz equation in a waveguide. These boundary conditions are perfectly transparent for all propagating modes. They do not require the determination of these propagating modes but only their propagation constants. A quasi-local form of these boundary conditions is well suited as terminating boundary condition beyon...
متن کاملHigh Order Absorbing Boundary Conditions for Elastodynamics
A high-order Absorbing Boundary Condition (ABC) is devised on an artificial boundary for time-dependent elastic waves in unbounded domains. The configuration considered is that of a two-dimensional elastic waveguide. The proposed ABC is an extension of the Hagstrom-Warburton ABC which was originally designed for acoustic waves, and is applied directly to the displacement field. The order of the...
متن کاملStabilized Local Non-reflecting Boundary Conditions for High Order Methods
Using the framework introduced by Rowley and Colonius [14] we construct a discretely non-reflecting boundary condition for the one-way wave equation spatially discretized with an explicit fourth order centered difference scheme. The boundary condition, which can be extended to arbitrary order accuracy, is shown to be GKSstable. We continue by deriving discretely non-reflecting boundary conditio...
متن کاملAccurate Non-reflecting Boundary Conditions for Time-dependent Acoustic Scattering
Accurate radiation boundary conditions for the time-dependent wave equation are formulated in the finite element method as an auxiliary problem for each radial harmonic on a spherical boundary. The method is based on residuals of an asymptotic expansion for the time-dependent radial harmonics. A decomposition into orthogonal transverse modes on the spherical boundary is used so that the residua...
متن کاملNon-reflecting Boundary Conditions for Wave Propagation Problems
We consider two aspects of non-reflecting boundary conditions for wave propagation problems. First we evaluate a proposed Perfectly Matched Layer (PML) method for the simulation of advective acoustics. It is shown that the proposed PML becomes unstable for a certain combination of parameters. A stabilizing procedure is proposed and implemented. By numerical experiments the performance of the PM...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: PAMM
سال: 2006
ISSN: 1617-7061,1617-7061
DOI: 10.1002/pamm.200610286