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Noise silencing technology for manifold flow noise based on ANSYS fluent
- Source :
- Journal of Natural Gas Science and Engineering. 29:322-328
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Fluid dynamic noise, namely, flow noise, produced by eddy disturbances and friction along the pipe walls becomes a significant problem in a natural gas transmission and distribution station. The Sound Pressure Level (SPL) distribution of the manifold flow noise is studied based on a theoretical method that combines large eddy simulations with the Ffowcs Williams–Hawkings (FW–H) acoustic analogy theory. The results shows that decreased with the inlet pipe diameter, the acoustic energy and the SPL of the flow noise at the end of the inlet pipe gradually increased. A small-hole muffler is designed and installed to address the manifold flow noise, and their noise reduction effects are subsequently analyzed. The results show that the small-hole muffler effectively reduced low-frequency noise up to 37.4 dB, and the mean noise reduction is about 20.9 dB.
- Subjects :
- Engineering
020209 energy
Noise reduction
Acoustics
Energy Engineering and Power Technology
02 engineering and technology
01 natural sciences
law.invention
Physics::Fluid Dynamics
law
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Sound pressure
010301 acoustics
Muffler
geography
geography.geographical_feature_category
business.industry
Geotechnical Engineering and Engineering Geology
Inlet
Noise
Fuel Technology
Transmission (telecommunications)
business
Manifold (fluid mechanics)
Large eddy simulation
Subjects
Details
- ISSN :
- 18755100
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- Journal of Natural Gas Science and Engineering
- Accession number :
- edsair.doi...........f877dc500e8e4d7e36df398ceb39f6a2