Super-directivity formation and numerical analysis of acoustic array
نویسندگان
چکیده
منابع مشابه
an infinite planar array of rectangular microstrip patch antenna analysis
the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...
15 صفحه اولsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
Beam Dithering: Acoustic Feedback Control Using a Modulated-Directivity Loudspeaker Array
Similar expressions hold for b n. To achieve the modulation, the array is weighted with the time-varying linear combination c n = (t)a n + f1 ? (t)gb n (5) where (t) is a smoothly varying function having an amplitude ranging from zero to one and a period much less than the reverberation time of the acoustic enclosure. This time-varying linear combination results in a time-varying beamwidth of r...
متن کاملNumerical comparison of LED directivity approximation functions
The approximation functions of the directivity of the light emitting diodes (LED) have been investigated. LEDs used in large scale LED video displays have been studied. LED directional properties among the other parameters define the video display image quality. The simplicity of an approximation function and ease of analytical handling have been targeted. These functions suppose to be used in ...
متن کاملSuper lattice formation of an array of volatile wetting droplets
For an ordered array of critical volatile wetting droplets the formation of a super lattice by an Ostwald-ripening like competition process is considered. The underlying diffusion problem is treated within a quasistatic approximation and to first order in the inverse droplets distance. The approach is rather general but a square lattice and a triangular lattice are studied explicitly. Dispersio...
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: Vibroengineering PROCEDIA
سال: 2018
ISSN: 2345-0533
DOI: 10.21595/vp.2018.19821