PML - methods for the linearized Euler equations
نویسنده
چکیده
A recently suggested method for absorbing boundary conditions for the Euler equations is examined. The method is of PML type and has the important property of being well posed. Results from numerical experiments using a second order discretization are presented. For some choices of parameters the method becomes unstable. The instability is observed to originate from the corner regions. A modification to avoid these instabilities is suggested. The PML method is tested for a variable Mach number problem. The performance does not seem to be degraded. Optimization of parameters in the method is performed.
منابع مشابه
On Absorbing Boundary Conditions for Linearized Euler Equations by a Perfectly Matched Layer
Recently, Berenger introduced a Perfectly Matched Layer (PML) technique for absorbing electromagnetic waves. In the present paper, a perfectly matched layer is proposed for absorbing out-going two-dimensional waves in a uniform mean ow, governed by linearized Euler equations. It is well known that the linearized Euler equations support acoustic waves, which travel with the speed of sound relati...
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