14) ANALYSIS OF NOISE ATTENUATION FROM SOME TYPICAL SHAPE NOISE SOURCES THAT ARE A GATHERING OF NON-DIRECTIONAL POINT SOURCES
نویسندگان
چکیده
منابع مشابه
Imaging of directional distributed noise sources
This study relates to the imaging of noise sources that are distributed and strongly directional, such as in turbulent jets. The goal is to generate noise source maps that are self-consistent, i.e., their integration over the extent of the noise source region gives the far-field pressure autospectrum for a particular emission direction. This is possible by including a directivity factor in the ...
متن کاملInteracting noise sources shape patterns of arm movement
8 Authors: 9 Gregory A. Apker, Timothy K. Darling, Christopher A. Buneo 10 11 School of Biological and Health Systems Engineering 12 Arizona State University 13 P.O. Box 879709 14 Tempe, AZ 85287-9709 15 USA 16 17 Running Head: Sources of reaching variability 18 19 Corresponding Author: C. A. Buneo, School of Biological and Health Systems Engineering, 20 Arizona State University, P.O. Box 87970...
متن کاملNumerical study on the acoustic field of a centrifugal fan and the tonal noise sources
The widespread use of squirrel cage fans, especially in ventilation and home and industrial environments, has led to the formation of many research efforts to improve performance and reduce the sound produced by this type of fan. In the literature, the most important factor in generating sound in this category of fans is the confrontation between the rotor exit flow and the volute of the fan. I...
متن کاملUnderstanding Slat Noise Sources
Model-scale aeroacoustic tests of large civil transports point to the leading-edge slat as a dominant high-lift noise source in the lowto mid-frequencies during aircraft approach and landing. Using generic multi-element high-lift models, complementary experimental and numerical tests were carefully planned and executed at NASA in order to isolate slat noise sources and the underlying noise gene...
متن کاملDiagnostics of noise acoustic sources
The diagnostics of the noise acoustical sources from near-field data is considered. The algorithms allowing the determination of the equivalent elementary source distribution along a radiator and the far-field reconstruction from near-field measurements are presented. Some components of the total reconstruction error are analyzed.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Transactions of the Architectural Institute of Japan
سال: 1961
ISSN: 0387-1185,2433-0027
DOI: 10.3130/aijsaxx.67.0_97