Aeroacoustic analysis of a NACA duct
2015 (English)In: 10th European Congress and Exposition on Noise Control Engineering, Euronoise, 2015Conference paper (Other academic)
An initial aeroacoustic study of a typical NACA inlet is presented. In this paper, the shape of the NACA inlet is based on the experimental work of the National Advisory Committee for Aeronautics. The study is performed at low Mach numbers. A time-averaged solution is obtained through a RANS simulation and validated against experimental results. The results show good agreement both in terms of overall performance of the inlet and in terms of local surface pressures. From the steady simulations, a broadband noise source model is applied to get an estimate of the location of the noise source regions on the surface of the inlet. This model of the NACA inlet will be used for a future acoustic analysis based on unsteady detached eddy simulation (DES) of the flow and on the Ffwocs Williams-Hawkings integral.
Place, publisher, year, edition, pages
NACA inlet, NACA duct, submerged air inlet, aeroacoustics, aerodynamics, detached eddy simulation, DES
IdentifiersURN: urn:nbn:se:kth:diva-171982OAI: oai:DiVA.org:kth-171982DiVA: diva2:845023
Euronoise 2015, 10th European Congress and Exposition on Noise Control Engineering, Maastricht, Netherlands, 2015
QC 201602262015-08-102015-08-102016-02-26Bibliographically approved