TY - JOUR
T1 - Provably stable overset grid methods for computational aeroacoustics
AU - Bodony, Daniel J.
AU - Zagaris, George
AU - Reichert, Adam
AU - Zhang, Qi
N1 - Funding Information:
The first author (D.J.B.) is indebted to his students and collaborators at the University of Illinois for their contributions, especially Mr. M. Campbell (Computational Science and Engineering), Professor J. Freund (Aerospace Engineering and Mechanical Science and Engineering) and Professor M. Heath (Computer Science). In addition, D.J.B. acknowledges financial support from NASA Glenn (SBIR, Dr. E. Envia, monitor), NASA NRA (Supersonic fixed wing, Drs. J. Bridges and J. Debonis, monitors; Subsonic fixed wing, Dr. L. Hultgren, monitor), and from the Department of Energy.
PY - 2011/8/15
Y1 - 2011/8/15
N2 - The simulation of sound generating flows in complex geometries requires accurate numerical methods that are non-dissipative and stable, and well-posed boundary conditions. A structured mesh approach is often desired for a higher-order discretization that better uses the provided grids, but at the expense of complex geometry capabilities relative to techniques for unstructured grids. One solution is to use an overset mesh-based discretization where locally structured meshes are globally assembled in an unstructured manner. This article discusses recent advancements in overset methods, also called Chimera methods, concerning boundary conditions, parallel methods for overset grid management, and stable and accurate interpolation between the grids. Several examples are given, some of which include moving grids.
AB - The simulation of sound generating flows in complex geometries requires accurate numerical methods that are non-dissipative and stable, and well-posed boundary conditions. A structured mesh approach is often desired for a higher-order discretization that better uses the provided grids, but at the expense of complex geometry capabilities relative to techniques for unstructured grids. One solution is to use an overset mesh-based discretization where locally structured meshes are globally assembled in an unstructured manner. This article discusses recent advancements in overset methods, also called Chimera methods, concerning boundary conditions, parallel methods for overset grid management, and stable and accurate interpolation between the grids. Several examples are given, some of which include moving grids.
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U2 - 10.1016/j.jsv.2011.02.010
DO - 10.1016/j.jsv.2011.02.010
M3 - Article
AN - SCOPUS:79957965480
SN - 0022-460X
VL - 330
SP - 4161
EP - 4179
JO - Journal of Sound and Vibration
JF - Journal of Sound and Vibration
IS - 17
ER -