scholarly journals Development of the principles of mathematical modelling and management of behaviour of fine dust fractions of various nature in non-uniform electric field

2018 ◽  
Vol 226 ◽  
pp. 02029 ◽  
Author(s):  
Maksim Minkin ◽  
Denis Kuimov
Keyword(s):  
Electric Field ◽  
Mathematical Modelling ◽  
Fine Fraction ◽  
Uniform Electric Field ◽  
Ionic Wind ◽  
Fine Dust ◽  
Physical Processes ◽  
Behaviour Models ◽  
The Mathematical Model

The main fundamental objective of this work is the research of behaviour of fine dust fractions (aerosols) of various nature in non-uniform electric field (the crown category) in the conditions of action of electric, gravitational, aerodynamic and other indignations. Determination of the fundamental principles and also development of methods of management of particles of fine fraction with the set physical characteristics will allow to develop adequate mathematical behaviour models of aerosols in nonuniform electric field. In the real work mathematical modelling of electrostatic field in the device is described and the mathematical model is presented. The analysis of physical processes in the device of blocking of dust emissions – “an electrostatic lock” taking into account influence of Aerodynamic effort is carried out from such phenomenon as “Ionic wind”.

scholarly journals Theoretical and practical aspects of the development of devices for suppressing dust streams such as "electrostatic gate" for industrial ventilation systems

2019 ◽  
Vol 104 ◽  
pp. 01014 ◽  
Author(s):  
Maxim S. Minkin ◽  
Denis N. Kuimov ◽  
Mikhail A. Shahramanyan
Keyword(s):  
Electric Field ◽  
Corona Discharge ◽  
Fine Fraction ◽  
Physical Characteristics ◽  
Uniform Electric Field ◽  
Fine Dust ◽  
Practical Application ◽  
Industrial Ventilation ◽  
Ventilation Systems

The main objective of this work is to study the behavior of fine dust fractions (aerosols) of different nature in a non-uniform electric field (corona discharge) under electric, gravitational, aerodynamic and other disturbances. Determination of fundamental principles, and development of methods for controlling fine-fraction particles with predetermined physical characteristics. This article also presents the results of practical application of the developed methods.

Separation of Fine Particles with the Set Dimensional and Physical Characteristics by Method of the Crown Separation

2016 ◽  
Vol 870 ◽  
pp. 625-629 ◽  
Author(s):  
M.S. Minkin ◽  
D.N. Kuimov ◽  
A.D. Lukyanov
Keyword(s):  
Electric Field ◽  
Fine Particles ◽  
Fine Fraction ◽  
Scientific Work ◽  
Physical Characteristics ◽  
Uniform Electric Field ◽  
Physical Processes ◽  
Dust Fraction ◽  
Electromechanical Device ◽  
The Impact

In this scientific work the new method of electroseparation by means of impact on a dust fraction of the crown charge is considered. The presented device for the electromechanical separation is the main competitor for systems of the electrostatic, crown, dielectric, triboadhesion separation widespread in the industry today. Use of the electromechanical device for crown separation allows separation of fine particles with the set dimensional and physical characteristics from the stream. The main attention in the article is paid to the research of a fine fraction behaviour in the non-uniform electric field. Mechanisms of the impact of electric, gravitational, aerodynamic and other disturbances on the dust fraction (aerosols) are considered in detail. The system of the equations describing physical processes of the movement of a dust particle in the non-uniform electric field taking into account influence of the aerodynamic effort created by the "ionic" wind is presented in this work.

scholarly journals Mathematical modelling of electrical potential difference in a non-uniform electric field

2020 ◽  
pp. 64-72
Author(s):  
Mustafa Erol ◽  
İldahan Özdeyiş Çolak
Keyword(s):  
Electric Field ◽  
Mathematical Modelling ◽  
Electric Fields ◽  
Electrical Potential ◽  
Potential Difference ◽  
Uniform Electric Field ◽  
Electrical Potential Difference ◽  
Dc Power ◽  
Scalar Products ◽  
Modelling Process

This work offers an unproblematic teaching tool for the instruction of challeng-ing concept of electric potential difference in a non-uniform electric field. Specifically, mathematical modelling process is employed and managed to comprehend and teach exceedingly difficult concepts of uniform and non-uniform electric fields, electrical potential difference, scalar products of vectors and also concept of path integral. In order to accomplish those tasks, initially a basic conducting panel/sheet, that is simply a wet cardboard, is designed as a part of the apparatus, together with a dc power supply, a multi meter and connecting cables. The established method is interesting in the sense that the 3D wet cardboard is novel, very practical and minimal costing, hence the approach offers physics educators fresh teaching routes and opportunities to clarify the puzzling concept of electrical potential difference and further.

scholarly journals Mathematical Modelling of the Cost Structure of the Logistics System of Shopping Malls in Budapest

2018 ◽  
Vol 46 (3) ◽  
pp. 142-150
Author(s):  
Krisztián Bóna ◽  
Ádám Róka ◽  
Dávid Lajos Sárdi
Keyword(s):  
Mathematical Modelling ◽  
Point Of View ◽  
Cost Structure ◽  
City Logistics ◽  
Shopping Malls ◽  
Physical Processes ◽  
Logistics System ◽  
The Cost ◽  
The Mathematical Model ◽  
The City

In this paper, we will present the examination of the city logistics system of shopping malls in Budapest. We will introduce the mathematical model of its cost structure which can help us to evaluate this complex system from a financial point of view. The data, we collected earlier, made it possible to simulate the physical processes of the current logistics system and to compare them with innovative new systems as well. However, in case of any new systems it is essential to compare the costs too. The mathematical modelling was based on the observed processes of three shopping malls in Budapest. We added this cost structure to the simulation model to make the simulation of costs possible, so now we have a tool which can help us comprehensively examine the current logistic system of the shopping malls in Budapest as well as a consolidation based proposed solution.

Models of Thermodynamic Properties of Prominences

1979 ◽  
Vol 44 ◽  
pp. 349-355
Author(s):  
R.W. Milkey
Keyword(s):  
Thermodynamic Properties ◽  
Mass Transport ◽  
Emission Spectrum ◽  
Thermodynamic Parameters ◽  
Working Group ◽  
Physical Processes ◽  
Theoretical Concepts ◽  
Group 3 ◽  
Observational Techniques

The focus of discussion in Working Group 3 was on the Thermodynamic Properties as determined spectroscopically, including the observational techniques and the theoretical modeling of physical processes responsible for the emission spectrum. Recent advances in observational techniques and theoretical concepts make this discussion particularly timely. It is wise to remember that the determination of thermodynamic parameters is not an end in itself and that these are interesting chiefly for what they can tell us about the energetics and mass transport in prominences.

DETERMINATION OF PERFORMANCE INDICATORS OF THE TRUCK KrAZ-6510TE

2020 ◽  
pp. 19-26
Author(s):  
Olexandr Pavlenko ◽  
Serhii Dun ◽  
Maksym Skliar
Keyword(s):  
Mathematical Model ◽  
Surface Friction ◽  
Building Structures ◽  
Maximum Torque ◽  
Military Equipment ◽  
Military Vehicles ◽  
Force Magnitude ◽  
Vehicle Mobility ◽  
The Mathematical Model

In any economy there is a need for the bulky goods transportation which cannot be divided into smaller parts. Such cargoes include building structures, elements of industrial equipment, tracked or wheeled construction and agricultural machinery, heavy armored military vehicles. In any case, tractor-semitrailer should provide fast delivery of goods with minimal fuel consumption. In order to guarantee the goods delivery, tractor-semitrailers must be able to overcome the existing roads broken grade and be capable to tow a semi-trailer in off-road conditions. These properties are especially important for military equipment transportation. The important factor that determines a tractor-semitrailer mobility is its gradeability. The purpose of this work is to improve a tractor-semitrailer mobility with tractor units manufactured at PJSC “AutoKrAZ” by increasing the tractor-semitrailer gradeability. The customer requirements for a new tractor are determined by the maximizing the grade to 18°. The analysis of the characteristics of modern tractor-semitrailers for heavy haulage has shown that the highest rate of this grade is 16.7°. The factors determining the limiting gradeability value were analyzed, based on the tractor-semitrailer with a KrAZ-6510TE tractor and a semi-trailer with a full weight of 80 t. It has been developed a mathematical model to investigate the tractor and semi-trailer axles vertical reactions distribution on the tractor-semitrailer friction performances. The mathematical model has allowed to calculate the gradeability value that the tractor-semitrailer can overcome in case of wheels and road surface friction value and the tractive force magnitude from the engine. The mathematical model adequacy was confirmed by comparing the calculations results with the data of factory tests. The analysis showed that on a dry road the KrAZ-6510TE tractor with a 80 t gross weight semitrailer is capable to climb a gradient of 14,35 ° with its coupling mass full use condition. The engine's maximum torque allows the tractor-semitrailer to overcome a gradient of 10.45° It has been determined the ways to improve the design of the KrAZ-6510TE tractor to increase its gradeability. Keywords: tractor, tractor-semitrailer vehicle mobility, tractor-semitrailer vehicle gradeability.

Bubble motion in liquid nitrogen under a non-uniform electric field in a microgravity environment

1997 ◽  
Vol 117 (11) ◽  
pp. 1109-1114
Author(s):  
Yoshiyuki Suda ◽  
Kenji Mutoh ◽  
Yosuke Sakai ◽  
Kiyotaka Matsuura ◽  
Norio Homma
Keyword(s):  
Electric Field ◽  
Liquid Nitrogen ◽  
Microgravity Environment ◽  
Uniform Electric Field ◽  
Bubble Motion
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