Projecten per jaar
Samenvatting
Acoustic effects of a rotationally oscillating cylinder are investigated as part of the rod-airfoil canonical benchmark. A 2D hybrid computational aeroacoustics approach is used for noise prediction, where oscillating rotation is introduced to the cylinder at varying excitation frequencies and amplitudes. It is shown that cylinder oscillating rotation generally proves to increase overall noise emissions and results in redirection of emitted noise. Moreover, the existence of a lock-in regime for forcing frequencies close to the natural shedding frequency is detected, which affects the shedding frequency and the acoustic spectra. The excitation frequency shifts the dominant frequency of vortex shedding, as well as the dominant peaks of radiated noise. The outcome of the investigation implies that forcing frequencies greater than the natural shedding frequency generally increase acoustic emissions with multiple tonal components. In addition, increasing the amplitude of oscillation results in higher noise generation.
Originele taal-2 | English |
---|---|
Titel | AIAA 2015-2827 |
Uitgeverij | AIAA |
Pagina's | 1-13 |
Aantal pagina's | 13 |
Status | Published - 2015 |
Evenement | 21st AIAA/CEAS Aeroacoustics Conference - Dallas, Texas, United States Duur: 22 jun 2015 → 26 jun 2015 |
Conference
Conference | 21st AIAA/CEAS Aeroacoustics Conference |
---|---|
Land/Regio | United States |
Stad | Dallas, Texas |
Periode | 22/06/15 → 26/06/15 |
Vingerafdruk
Duik in de onderzoeksthema's van 'Acoustic Effects of a Rotationally Oscillating Rod in a Rod-Airfoil Configuration'. Samen vormen ze een unieke vingerafdruk.Projecten
- 1 Afgelopen
-
IWT664: Voorspelling van direct en verspreid geluidsveld van roterende machines
De Troyer, T., Ghorbaniasl, G., Lacor, C. & Siozos-Rousoulis, L.
1/01/14 → 31/12/17
Project: Fundamenteel