Improving the performance of double-expansion chamber muffler using dielectric beads; optimization using factorial design
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Environmental Health Science and Engineering"
DOI: 10.1007/s40201-021-00749-z
Abstract: Noise pollution is a common health hazard worldwide which is emitted along with chemical air pollutants, simultaneously from many sources. Some studies have been conducted to control these pollutants, simultaneously with promising results being achieved.… read more here.
Keywords: chamber muffler; double expansion; ceramic beads; muffler ... See more keywords
Numerical analysis of circular straight mufflers equipped with three chambers at high-order-modes
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2019.05.021
Abstract: Abstract Plane wave theory has been used in predicting the acoustical performance of one-chamber straight mufflers. But, the acoustical effect of the mufflers at higher frequencies that are beyond the threshold of the cut-off frequency… read more here.
Keywords: chamber; straight mufflers; order; chamber straight ... See more keywords
A tunable metamaterial muffler with a membrane structure based on Helmholtz cavities
Sign Up to like & getrecommendations! Published in 2020 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2019.107022
Abstract: Abstract With the recent advances in acoustic metamaterial science, the possibility of sound attenuation using Helmholtz cavity structures while reducing low-frequency noise has been demonstrated. However, the ongoing challenge addressed herein is the fact that… read more here.
Keywords: muffler; muffler membrane; silencing frequency; frequency ... See more keywords
End corrections for double-tuning of the same-end inlet-outlet muffler
Sign Up to like & getrecommendations! Published in 2020 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2019.107116
Abstract: Abstract Transmission loss spectrum of a simple expansion chamber (SEC) muffler is characterized by periodic domes. In recent years, it has been shown that by extending the inlet pipe and outlet pipe of the SEC… read more here.
Keywords: chamber; inlet; muffler; outlet ... See more keywords
Local Structural Optimization Method Based on Orthogonal Analysis for a Resistant Muffler
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3063768
Abstract: A resistant muffler is the most direct and effective means of reducing exhaust noise from earthmoving equipment. Different types of construction machinery require different mufflers. Current muffler design is mostly experience-based, and there are blind… read more here.
Keywords: optimization; resistant muffler; local structural; method ... See more keywords
Effects of inlet-outlet positioning, muffler geometry, and baffle design on vehicle muffler performance for desired sound transmission loss
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering"
DOI: 10.1177/09544070221080804
Abstract: A systematic comparative examination of different single-chamber and double-chamber muffler geometries, comprised of various baffle geometry and size, number of chambers, and inlet-outlet positioning was conducted to determine the most suitable geometry for size-efficient mufflers… read more here.
Keywords: chamber; muffler; geometry; inlet outlet ... See more keywords
Multi-field coupling prediction for improving aeroacoustic performance of muffler based on LES and FW-H acoustic analogy methods
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Aeroacoustics"
DOI: 10.1177/1475472x211005409
Abstract: Based on the large eddy simulation (LES) and Ffowcs Williams and Hawkings (FW-H) equation, a multi-field coupling method is presented for aeroacoustic prediction of a muffler with high-speed and high-temperature exhaust gasflow. A three-dimensional finite-volume… read more here.
Keywords: field coupling; analogy methods; acoustic analogy; multi field ... See more keywords
Noise Elimination of Reciprocating Compressors Using FEM, Neural Networks Method, and the GA Method
Sign Up to like & getrecommendations! Published in 2017 at "Archives of Acoustics"
DOI: 10.1515/aoa-2017-0021
Abstract: Industry often utilizes acoustical hoods to block noise emitted from reciprocating compressors. However, the hoods are large and bulky. Therefore, to diminish the size of the compressor, a compact discharge muffler linked to the compressor… read more here.
Keywords: muffler; compressor; reciprocating compressors; elimination reciprocating ... See more keywords
Seismic Muffler Protection of Critical Infrastructure from Earthquakes
Sign Up to like & getrecommendations! Published in 2018 at "Bulletin of the Seismological Society of America"
DOI: 10.1785/0120170384
Abstract: Each year, on average, a magnitude-8 earthquake strikes somewhere in the world. In addition, 10,000 earthquake related deaths occur annually, where collapsing buildings claim most lives. Moreover, in recent events, industry activity of wastewater reinjection… read more here.
Keywords: muffler; protection; seismic waves; magnitude earthquake ... See more keywords
Using Response Surface for Searching the Nearly Optimal Parameters Combination of the Foam Concrete Muffler
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15228128
Abstract: A car muffler is a device to improve car noise emission. Some conventional mufflers use layers of glass fiber as a material to absorb noise. However, filling glass fiber is an environmentally unfriendly work, mainly… read more here.
Keywords: muffler; foam concrete; glass fiber; response surface ... See more keywords