Beiträge in Tagungsbänden:
S. Schoder, K. Roppert, M. Kaltenbacher:
"Aeroacoustic formulation based on compressible flow data applying Helmholtzīs decomposition";
in: "Waves 2019",
herausgegeben von: TU Wien;
Institut für Mechanik und Mechatronik, Technische Universität Wien,
Wien,
2019, (eingeladen),
S. 150
- 151.
Kurzfassung englisch:
Aeroacoustic analogies, in combination with a
hybrid approach, represent a computationally
efficient way to predict sound radiation. The
classical hybrid approach, of first performing an
incompressible flow computation, evaluate the
acoustic sources and finally compute the acous-
tic field does not consider any feedback of the
acoustic field on the flow. Therefore, we propose
the following adapted approach: (1) Perform
a compressible flow simulation on a restricted
domain, which incorporates two-way coupling
of flow and acoustics; (2) Filter the flow data
by Helmholtzīs decomposition, such that we ob-
tain a pure non-radiating field, which the acous-
tic sources are computed with; (3) Perform the
acoustic propagation computation. In this work,
we present the theoretical fundamentals of this
adapted hybrid approach and in particular Helm-
holtzīs decomposition of the flow data using the
finite element method.
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.