Cone angle effects on noise characteristics of jets impinging on conical obstacles
Source abstract
Abstract
This paper presents an acoustic measurement experiment to investigate noise characteristics of jets impinging on conical obstacles of different cone angles. Besides cone angle, effects of impinging velocity and impinging distance are also studied. Overall sound pressure level (OASPL) and noise spectrum are analyzed. The results suggest that effects of cone angle on noise characteristics of the impinging jet are mainly related to the impinging distance. The main spectrum characteristic for impinging jet cases is of broadband characteristic in the middle and high frequency bands. Further, compared to the free jet case, main acoustic sources of the impinging jet for three cone angle cases are discussed under different impinging distances, combined with flow field analysis and spectrum analysis. Finally, a detailed noise directivity study is carried out. The OASPL of impinging jet for different cone angle cases is presented under various impinging distances and monitoring point positions.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Aerodynamics and Acoustics in Jet Flows · Fluid Dynamics and Turbulent Flows · Heat Transfer Mechanisms
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Energy and Power Engineering, Huazhong University of Science & Technology , Wuhan 430074, China
Funding
National Natural Science Foundation of China
References (20)
Show source-provided references
1. Numerical and experimental study of turbulent impinging twin-jet flow10.1016/j.expthermflusci.2006.11.006 ↗
2. Effect of impingement surface roughness on the noise from impinging jets10.1063/1.4866977 ↗
3. Aeroacoustics and aerodynamics of impinging supersonic jets: Analysis of the screech tones10.1063/1.4819333 ↗
4. Self-excited oscillations of a high-speed impinging planar jet10.1016/j.jfluidstructs.2012.06.002 ↗
5. Effect of nozzle-plate distance on acoustic phenomena from supersonic impinging jet10.2514/1.j056504 ↗
6. Flow structures and noise from a supersonic impinging jet10.1108/hff-05-2015-0174 ↗
7. Investigation of tone generation in ideally expanded supersonic planar impinging jets using large-eddy simulation
8. Noise generation mechanisms for a supersonic jet impinging on an inclined plate10.1017/jfm.2016.244 ↗
9. Detached-eddy simulations of rocket plume noise at lift-off10.1121/1.4899846 ↗
10. Interaction of shocks and vortices in a highly underexpanded supersonic impinging jet10.2514/1.j051393 ↗
11. Simulation of tonal noise generation by supersonic impinging jets10.2514/1.j051839 ↗
12. Plate-angle effects on acoustic waves from supersonic jets impinging on inclined plates
13. Oscillatory behavior of supersonic impinging jet flows10.1007/s00193-005-0270-9 ↗
14. On the edgetone10.1121/1.1936879 ↗
15. Nature of the sound sources in low—Speed jet impingement—Further considerations10.1121/1.401443 ↗
16. Effect of impinging plate geometry on the self-excitation of subsonic impinging jets10.1016/j.jfluidstructs.2011.05.006 ↗
17. Three-dimensional numerical simulation of a vortex ring impinging on a circular cylinder10.1088/0169-5983/47/2/025507 ↗
18. Influence of jet temperature and nozzle shape on the heat transfer distribution between a smooth plate and impinging air jets10.1016/j.ijthermalsci.2015.08.009 ↗
19. Numerical study of turbulent annular impinging jet flow and heat transfer from a flat surface10.1016/j.applthermaleng.2018.04.007 ↗
20. Heat transfer and flow characteristics of impinging jet on a concave surface at small nozzle to surface distances10.1016/j.applthermaleng.2018.04.086 ↗