Results 211 to 220 of about 3,149 (257)
Some of the next articles are maybe not open access.
Studies on conical and cylindrical resonators
Applied Acoustics, 2008Spectral features of conical and cylindrical Hartmann resonators are compared in this work through a systematic parametric study. Experiments have been conducted by varying the following parameters: stand-off distance, nozzle pressure ratio and cone angle.
Sreejith, G.J. +3 more
openaire +2 more sources
Resonant frequencies and quality factors in lossy NRD cylindrical resonators
International Journal of Infrared and Millimeter Waves, 1995In this paper the fundamental effects of losses on resonant parameters (frequencies and quality factors) are analyzed for circular-cylindrical dielectric resonators inserted between metal plates, in the configuration also called NRD (Non-Radiative Dielectric). Power dissipations are considered both in the dielectric and in the conductors.
FREZZA, Fabrizio +3 more
openaire +1 more source
Acoustically driven oscillatory flow fields in a cylindrical resonator at resonance
The Journal of the Acoustical Society of America, 2019Generation and development of acoustic waves in an air-filled cylindrical resonator driven by a conical electro-mechanical speaker are studied experimentally and simulated numerically. The driving frequencies of the speaker are chosen such that a standing wave field is produced at each chosen frequency in the resonator.
Bakhtier, Farouk +2 more
openaire +2 more sources
Orbital trajectory of an acoustic bubble in a cylindrical resonator
Physical Review E, 2013Acoustic cavitation-induced microbubbles in a cylindrical resonator filled with water tend to concentrate into ring patterns due to the cylindrical geometry of the system. The shape of these ring patterns is directly linked to the Bjerknes force distribution in the resonator.
Cyril, Desjouy +4 more
openaire +2 more sources
On the theory of cylindrical resonators
Mathematical Methods in the Applied Sciences, 1991AbstractThis paper contains an introduction to the methods of operator‐valued functions for solving some non‐linear eigenvalue problems of the electrodynamics of guided waves. One simple example of the problem of fundamental frequencies for the rectangular‐slot resonator is considered that gives an opportunity to follow all the steps and features of ...
openaire +1 more source
Cylindrical coils near self‐resonance
Magnetic Resonance in Medicine, 1993AbstractWe present a model of birdcage resonator operation when the size of the resonator approaches a quarter wave length resulting in significant phase shifts along the current conducting elements. In the model resonators are treated as generalized trainsmission lines.
openaire +2 more sources
Japanese Journal of Applied Physics, 1994
In recent years, the need for a low-frequency acoustic source for oceanic observation and long-distance propagation in the sea has been increasing. Generally, the attenuation loss of low frequency acoustic waves in water is very low compared to that of electromagnetic waves.
Hiroshi Shibata +4 more
openaire +1 more source
In recent years, the need for a low-frequency acoustic source for oceanic observation and long-distance propagation in the sea has been increasing. Generally, the attenuation loss of low frequency acoustic waves in water is very low compared to that of electromagnetic waves.
Hiroshi Shibata +4 more
openaire +1 more source
Vector modes in cylindrical resonators
Journal of the Optical Society of America, 1982The vector field properties of the modes in cylindrical resonators are analyzed in detail. Modes with spatially varying directions of polarization are shown to exist even in the absence of polarizing elements. The polarizing properties of conical elements may cause such modes to become dominant.
openaire +1 more source
Cylindrical dielectric resonator for Josephson plasma resonance measurement
Superconductor Science and Technology, 2006The design of a cylindrical dielectric cavity operated in various TMnmp modes, suitable for Josephson plasma resonance measurements of small superconducting high-Tc single crystals, is described. Its resonant frequencies are calculated analytically using the perturbation theory and compared with experimental results.
P Gierłowski, P Spathis
openaire +1 more source
Static balancing of metal resonators of cylindrical resonator gyroscopes
Gyroscopy and Navigation, 2014A technique based on electrochemical etching of metal is suggested for balancing the first four harmonics of nonuniform mass distribution in a metal cylindrical toothless resonator for a cylindrical resonator gyroscope (CRG). An algorithm for removing mass from the resonator surface has been designed with allowance made for analytically calculated ...
M. A. Basarab +3 more
openaire +1 more source