Analytical Study, Numerical Modelling and Experimental Results of the Forces which Act in the Magnetic Liquid Placed between the Poles of an Electromagnet
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2018, Vol 42, Issue 0
Abstract
This paper makes an analytical study, a numerical and an experimental analysis of the magnetic forces which act in magnetic liquids during the experiment called Quincke’s effect. Quincke’s effect consists in the rise of the magnetic liquid between the poles of an electromagnet. In ferrohydrodynamics theory, the forces acting in the magnetic liquid are not always treated in a uniform manner. The main goal of this paper is to give a consistent macroscopic view, pointing out the importance of the magnetostriction in the force localization understanding. If the absence of the magnetostrictive term in the forces expression leads to an exclusively superficial localization of the forces, the presence of this term leads both to a superficial localization of forces as well as their presence in the magnetic liquid volume. Moreover, in the magnetic liquid rise, the volume forces have a significant contribution than the surface forces, so the magnetostrictive term shall not be neglected. In this analysis, the magnetic liquid will be considered as a linear and nonconducting medium placed in a stationary (or quasistationary) field. In order to support the analytical study, a numerical analysis of the magnetic forces and some qualitative experiments were made. The value of the magnetic field forces which act in the magnetic liquid were established in Matlab using the magnetic field strength established by FEM analysis. Analyzing the numerical results and the magnetic liquid deformation obtained by experiments, the main conclusion consists in the fact that the magnetostrictive term has an important contribution in the localization of the forces, so it shall be taken into consideration.
Authors and Affiliations
Daniela Vesa
Keywords
Related Articles
- EP ID EP432958
- DOI -
- Views 115
- Downloads 0
Diminishing the Computational Burden when Analyzing Electrical Signals with Long Wavelet Filters
Wavelet analysis is characterized by filters with irrational coefficients and runtimes increasing with filters order. The terminal nodes of Wavelet Packet decomposition trees exhibit good harmonics’ selectivity when impl...
Hybrid Systems Modeling Approach with Petri Nets
The purpose of this paper is to present the achievement of the Hybrid Petri Nets techniques used for modeling and behavioral analysis of a class of hybrid systems. In our sense, a dynamic hybrid system contains at least...
Transversal Shape Optimization of a Brushless DC Motor for Electric Vehicles
The opportunity of this research is to emphasize certain approaches related to the design and modeling of low and medium power permanent magnet brushless DC motors for electric vehicles, which are presently poorly...
Influence of the Environmental Aspects on the Quality of the Activity of the Wastewater Treatment Plant from the Repairs Locomotives Industry
The aim of this paper is to identify an engineering method to study and to optimize the process of treating the wastewaters from the repairs locomotives industry in terms of quality, cost and environmental impact. The...
Estimation of Certain Power in Single-phase Network and DC Circuits
Requirement of electrical energy is in order to operate various domestic and industrial devices like ap-pliances, equipment and machinery. Electrical energy per time unit represents electrical power transferred. Well kno...