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Aeroacoustics Research in Europe (edited by MJ Fisher and RH Self): 6.3 Research on open- and Ducted Rotor noise using CAA multidomain method

Yin, J. and Delfs, J. (2002) Aeroacoustics Research in Europe (edited by MJ Fisher and RH Self): 6.3 Research on open- and Ducted Rotor noise using CAA multidomain method. Journal of Sound and Vibration, 258 (1), pp. 1-30.

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Abstract

The prediction of open or ducted rotor noise is a challenging problem as there are large difference in scales between the noise source near the rotor and the sound field. The sound field generated by an open rotor and that radiated by the same rotor placed inside a semi-infinite duct is simulated in DLR using a CAA multidomain method. The linearized Euler equations in cylindrical coordinates are used as governing equations in solving this problem. Both Tam's radiation and PML far field boundary conditions are used. A multidomain Cartesian grid system is used so that the number of grid points can be kept as a minimum. A combination of DRP and a specially optimized cell-centered high order differencing scheme is implemented in the area of two Cartesian grid interfaces.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:Aeroacoustics Research in Europe (edited by MJ Fisher and RH Self): 6.3 Research on open- and Ducted Rotor noise using CAA multidomain method
Authors:
AuthorsInstitution or Email of Authors
Yin, J.UNSPECIFIED
Delfs, J.UNSPECIFIED
Date:2002
Journal or Publication Title:Journal of Sound and Vibration
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:258
Page Range:pp. 1-30
Status:Published
Keywords:Open- and- Ducted Rotor noise, CAA multidomain method, PML
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Quiet and Comfortable Rotorcraft
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:53

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