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S. Feit
S. Feit
Technische Hochschule Georg Agricola
Technische Hochschule Georg Agricola

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Articles

Electromechanics and mechanical engineering
  • Date submitted
    2017-04-29
  • Date accepted
    2017-06-29
  • Date published
    2017-10-25

Multiphysical model of heterogenous flow moving along а channel of variable cross-section

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The article deals with the problem aimed at solving the fundamental problems of developing effective methods and tools for designing, controlling and managing the stream of fluid flowing in variable-section pipelines intended for the production of pumping equipment, medical devices and used in such areas of industry as mining, chemical, food production, etc. Execution of simulation modelling of flow motion according to the scheme of twisted paddle static mixer allows to estimate the efficiency of mixing by calculating the trajectory and velocities of the suspended particles going through the mixer, and also to estimate the pressure drop on the hydraulic flow resistance. The model examines the mixing of solids dissolved in a liquid at room temperature. To visualize the process of distributing the mixture particles over the cross-section and analyzing the mixing efficiency, the Poincaréplot module of the COMSOL Multiphysics software environment was used. For the first time, a multi-physical stream of heterogeneous flow model has been developed that describes in detail the physical state of the fluid at all points of the considered section at the initial time, takes into account the design parameters of the channel (orientation, dimensions, material, etc.), specifies the laws of variation of the parameters at the boundaries of the calculated section in conditions of the wave change in the internal section of the working chamber-channel of the inductive peristaltic pumping unit under the influence of the energy of the magnetic field.

How to cite: Vasileva M.A., Feit S. Multiphysical model of heterogenous flow moving along а channel of variable cross-section // Journal of Mining Institute. 2017. Vol. 227. p. 558. DOI: 10.25515/PMI.2017.5.558
Oil and gas
  • Date submitted
    2015-11-27
  • Date accepted
    2016-01-09
  • Date published
    2016-05-01

Investigation of polymer material of the working camera-channel of the magnetic pumps for heavy oil

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The article contains results the study of the basic properties of fluorinated polymers used as matrix in the manufacture of magnetically active elastomers (MAE). MAE belong to the group of so-called smart materials, they can be used in the creation of new techniques and technologies. Environments, which is in contact with an element of the MAE, specifically high viscosity asphaltenic oil impose substantial restrictions on the choice of the polymer matrix for its production, taking into consideration the influence of the material selected to modify the rheological properties of the resultant material. The use of magnetically active materials in the system instead of a roller system, pressing on the tube with the substance, and to push it forward will significantly expand the range of application of such equipment. Additionally, the magnetic treatment reduces the viscosity, the limit shear stress and the activation energy of the viscous flow of oil.

How to cite: Vasileva M.A., Feit S. Investigation of polymer material of the working camera-channel of the magnetic pumps for heavy oil // Journal of Mining Institute. 2016. Vol. 221. p. 651. DOI: 10.18454/PMI.2016.5.651