Raumer, Hans-Georg (2020) Numerical Methods for Source Power Reconstruction in Experimental Aeroacoustics. In: Report, 2050 (39/202), Seiten 26-28. Oberwolfach Workshop 2050 - Computational Inverse Problems for Partial Differential Equations, 2020-12-06 - 2020-12-12, Oberwolfach. doi: 10.14760/OWR-2020-39.
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Offizielle URL: https://publications.mfo.de/handle/mfo/3829
Kurzfassung
We consider the inverse source problem of reconstructing the power of a bounded, compactly supported and uncorrelated acoustic source, given the covariance operator of pressure data within a bounded measurement domain. Such problems arise for example from aeroacoustic wind tunnel experiments. It turns out that in this case, the source power function is uniquely determined by the covariance operator. Given noisy correlation measurements, pointwise imaging methods provide a rough estimator of the source power. The resolution of such imaging methods can be increased by considering a weighted inner product in the data space, depending on the statistical properties of the measurement noise. For the reconstruction of the entire source power function, Tikhonov regularization with a sparsity promoting penalty functional is considered.
elib-URL des Eintrags: | https://elib.dlr.de/140766/ | ||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||
Titel: | Numerical Methods for Source Power Reconstruction in Experimental Aeroacoustics | ||||
Autoren: |
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Datum: | Dezember 2020 | ||||
Erschienen in: | Report | ||||
Open Access: | Nein | ||||
In SCOPUS: | Nein | ||||
In ISI Web of Science: | Nein | ||||
Band: | 2050 | ||||
DOI: | 10.14760/OWR-2020-39 | ||||
Seitenbereich: | Seiten 26-28 | ||||
Stichwörter: | Aeroacoustics, inverse source problem, source imaging, uniqueness | ||||
Veranstaltungstitel: | Oberwolfach Workshop 2050 - Computational Inverse Problems for Partial Differential Equations | ||||
Veranstaltungsort: | Oberwolfach | ||||
Veranstaltungsart: | Workshop | ||||
Veranstaltungsbeginn: | 6 Dezember 2020 | ||||
Veranstaltungsende: | 12 Dezember 2020 | ||||
Veranstalter : | Mathematisches Forschungsinstitut Oberwolfach | ||||
Institution: | Deutsches Zentrum für Luft- und Raumfahrt e.V. | ||||
Abteilung: | AS-EXV | ||||
DLR - Schwerpunkt: | Luftfahrt | ||||
DLR - Forschungsgebiet: | L EV - Effizientes Luftfahrzeug | ||||
Standort: | Göttingen | ||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO |
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