A Finite-volume, Cartesian grid method for acoustic problems with
complex geometry
Rick Vedder
Site of the project:
University of Michigan
Department of Aerospace Engineering
Francois-Xavier Bagnoud Building
1320 Beal Avenue
Ann Arbor, Michigan 48109-2140
USA
start of the project: September 2005
In November 2005 the
Interim
Thesis has been appeared
and a
presentation has been given.
The Master project has been finished in June 2006
by the completion of the
Masters Thesis and a final
presentation has been given.
For working address etc. we refer to our
alumnipage.
Summary of the master project:
Computational AeroAcoustics (CAA) combines the disciplines aeroacoustics
and computational fluid dynamics and deals with sound generation and
propagation
in association with the dynamics of the flow. Its interaction with the
geometry of the domain (surroundings) also plays an important role.
Current
CAA-tools are still limited in many practical problems due to different
length and time scales between prevailing fluid dynamics and acoustic
nonlinearity in physical mechanisms and complex geometries. To carry out
effective CAA, it is essential that the numerical solutions contain low
dissipation and dispersion error. Recently, optimized numerical schemes have
been proposed with a finite difference approach.
Two important objectives of present research are: recasting these schemes
into finite volume form and defining and using a cut-cell method for complex
geometry.
The cut-cell method uses a cartesian background grid for the domain and
there is a special treatment for every boundary cell that is cut off by
solid bodies. In general these cells are all irregularly shaped.
The optimized finite volume schemes combined with a useful cut-cell
method can offer CAA improved capabilities.
Contact information:
Kees
Vuik
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