Articles | Volume 7, issue 1
J. Sens. Sens. Syst., 7, 113–122, 2018
J. Sens. Sens. Syst., 7, 113–122, 2018

Regular research article 01 Mar 2018

Regular research article | 01 Mar 2018

Aeroacoustic analysis using natural Helmholtz–Hodge decomposition

Daniel Haufe et al.

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Cited articles

Albrecht, H.-E., Borys, M., Damaschke, N., and Tropea, C.: Laser Doppler and Phase Doppler Measurement Techniques, Springer, Berlin, Heidelberg, New York,, 2003. a
Bhatia, H., Norgard, G., Pascucci, V., and Bremer, P.-T.: The Helmholtz-hodge decomposition – a survey, IEEE T. Vis. Comput. Gr., 19, 1386,, 2013. a
Bhatia, H., Pascucci, V., and Bremer, P.-T.: The natural Helmholtz-hodge decomposition for open-boundary flow analysis, IEEE T. Vis. Comput. Gr., 20, 1566,, 2014. a, b, c, d, e, f, g, h
De Roeck, W., Baelmans, M., and Desmet, W.: An aerodynamic/acoustic splitting technique for hybrid CAA applications, in: 13th AIAA/CEAS Aeroacoustics Conference, 2007-3726, 21–23 May 2007, Rome, Italy,, 2007. a
Denaro, F. M.: On the application of the Helmholtz–Hodge decomposition in projection methods for incompressible flows with general boundary conditions, Int. J. Numer. Meth. Fl., 43, 43,, 2003. a
Short summary
The analysis of aeroacoustic phenomena is crucial for deeper understanding of the damping mechanisms of a sound-absorbing bias flow liner. Simultaneous three-component velocity measurements of the superposed sound field and the flow field in a 3-D region of interest with over 4000 measurement points are presented. The natural Helmholtz–Hodge decomposition is applied to separate both fields from the measured velocity field in the spatial domain. This reveals new insight into the aerodynamic flow.