scholarly journals Investigation of electromagnetic characteristics of ferro-vortex apparatus

2019 ◽  
Author(s):  
Andrey Adoshev ◽  
Sergey Antonov ◽  
Alexander Ivashina ◽  
Sergey Yastrebov
Keyword(s):  
Electromagnetic Characteristics ◽  
Vortex Apparatus

Modeling of the Electromagnetic Characteristics of the Inductor of an Electric Vortex Apparatus in the Comsol Multiphysics Environment

2021 ◽  
Vol 64 (3) ◽  
pp. 12-17
Author(s):  
Anatoly Lavrentyev ◽  
◽  
Nikolay Limarenko ◽  
Christina Khohlova ◽  
◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Simulation Models ◽  
Point Of View ◽  
Comsol Multiphysics ◽  
Promising Solution ◽  
Electromagnetic Characteristics ◽  
Centers Of Mass ◽  
Working Bodies ◽  
Object Of Study ◽  
Vortex Apparatus

Electric vortex devices are a promising solution for intensifying a large number of technological influ-ences. However, depending on the area of application, the efficiency of use depends on a large number of fac-tors which are often difficult to optimize without a simulation model. The article discusses the possibility of modeling of the electromagnetic characteristics of the inductor of a vortex electric apparatus in the Comsol Multiphysics environment. The aim of the study was to evaluate the distribution of magnetic flux in the inductor of a vortex electric apparatus depending on the type of geometry and the level of occupancy of the technologi-cal zone. The object of study is the inductor of a vortex electric apparatus with an unmatched moving part, the subject is the distribution of magnetic flux depending on the type of geometry of working bodies and the level of their occupancy of the technological zone. The simulation of the distribution of the magnetic flux in the in-ductor, depending on the type of the used geometry of the working bodies, as well as the level of their filling of the technological zone was carried out. It was found that the most promising from the energy point of view is the use of spherical working bodies which is explained by the most preferable mass inertial characteristics rela-tive to rod working bodies with displaced centers of mass. The obtained results can represent the initial data for the development of elements of digitalization of the energy characteristics of vortex electrical devices dur-ing their operation in various industries, as well as when creating their simulation models.

Frequency-domain electromagnetic characteristics of a 26 kW ammonia arcjet

1993 ◽  
Author(s):  
L. JOHNSON ◽  
A. RIVERA ◽  
M. LUNDQUIST ◽  
T. SANKS ◽  
A. SUTTON ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Electromagnetic Characteristics

scholarly journals A Novel Electrically Small Ground-Penetrating Radar Patch Antenna with a Parasitic Ring for Respiration Detection

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1930
Author(s):  
Di Shi ◽  
Taimur Aftab ◽  
Gunnar Gidion ◽  
Fatma Sayed ◽  
Leonhard M. Reindl
Keyword(s):  
Ground Penetrating Radar ◽  
Patch Antenna ◽  
Low Cost ◽  
Substrate Material ◽  
Geometric Parameters ◽  
Gas Explosions ◽  
Aerial Vehicle ◽  
Electromagnetic Characteristics ◽  
Ground Penetrating ◽  
Quick Search

An electrically small patch antenna with a low-cost high-permittivity ceramic substrate material for use in a ground-penetrating radar is proposed in this work. The antenna is based on a commercial ceramic 915 MHz patch antenna with a size of 25 × 25 × 4 mm3 and a weight of 12.9 g. The influences of the main geometric parameters on the antenna’s electromagnetic characteristics were comprehensively studied. Three bandwidth improvement techniques were sequentially applied to optimize the antenna: tuning the key geometric parameters, adding cuts on the edges, and adding parasitic radiators. The designed antenna operates at around 1.3 GHz and has more than 40 MHz continuous −3 dB bandwidth. In comparison to the original antenna, the −3 and −6 dB fractional bandwidth is improved by 1.8 times and 4 times, respectively. Two antennas of the proposed design together with a customized radar were installed on an unmanned aerial vehicle (UAV) for a quick search for survivors after earthquakes or gas explosions without exposing the rescue staff to the uncertain dangers of moving on the debris.

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