ACOUSTIC ATTENUATION PERFORMANCE OF CIRCULAR EXPANSION CHAMBERS WITH EXTENDED INLET/OUTLET

1999 ◽  
Vol 223 (2) ◽  
pp. 197-212 ◽  
Author(s):  
A. Selamet ◽  
Z.L. Ji
Keyword(s):  
Acoustic Attenuation

COATING FOR AN UNDERWATER ACTIVE ACOUSTIC ATTENUATION CONTROL SYSTEM

1990 ◽  
Vol 51 (C2) ◽  
pp. C2-801-C2-804
Author(s):  
T. R. HOWARTH ◽  
X.-Q. BAO ◽  
V. K. VARADAN ◽  
V. V. VARADAN
Keyword(s):  
Control System ◽  
Acoustic Attenuation

INFLUENCE OF MAGNETIC NANOPARTICLES ON ACOUSTIC ATTENUATION IN LIQUIDS

Akustika ◽  
2020 ◽  
pp. 8-13
Author(s):  
Štefan Hardoň ◽  
Jozef Kúdelčík
Keyword(s):  
Magnetic Nanoparticles ◽  
Heat Exchangers ◽  
Magnetic Fluids ◽  
Magnetic Flux Density ◽  
Acoustic Attenuation ◽  
Cooling Systems ◽  
Practical Applications ◽  
Acoustic Spectroscopy ◽  
Aggregation Processes ◽  
Diagnostics And Therapy

Magnetic fluids with nanoparticles dispersed in water or oils offer attractive applications in biomedicine and industry. Biocompatible magnetic fluids are used for diagnostics and therapy in medical applications, in pharmacy, and biosensors. Application of ferrofluids is expanding into energy conservation, faster and efficient cooling, and hence better performance in a wide variety of practical applications (in heat exchangers, mainly in micro-cooling systems). For the study of the influence of an external magnetic field on the aggregation processes of magnetic nanoparticles in magnetic fluids, acoustic spectroscopy was used. The jump changes of the magnetic flux density at various temperatures influenced the acoustic attenuation. The measured changes were results of nanoparticle aggregations into new structures.

scholarly journals Evidence for a Crossover in the Frequency Dependence of the Acoustic Attenuation in Vitreous Silica

2006 ◽  
Vol 97 (3) ◽  
Author(s):  
C. Masciovecchio ◽  
G. Baldi ◽  
S. Caponi ◽  
L. Comez ◽  
S. Di Fonzo ◽  
...  
Keyword(s):  
Frequency Dependence ◽  
Vitreous Silica ◽  
Acoustic Attenuation

Influence of pathological state on the acoustic attenuation coefficient slope of liver

1987 ◽  
Vol 13 (3) ◽  
pp. 135-139 ◽  
Author(s):  
M. Afschrift ◽  
C. Cuvelier ◽  
S. Ringoir ◽  
F. Barbier
Keyword(s):  
Attenuation Coefficient ◽  
Pathological State ◽  
Acoustic Attenuation

Time-domain CFD computation and analysis of acoustic attenuation performance of water-filled silencers

2016 ◽  
Vol 23 (9) ◽  
pp. 2397-2401
Author(s):  
Chen Liu ◽  
Zhen-lin Ji ◽  
Yin-zhong Cheng ◽  
Sheng-lan Liu
Keyword(s):  
Time Domain ◽  
Acoustic Attenuation
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