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Mahilyow, Belarus

Malyshev V.L.,Mogilev State University
Theoretical Foundations of Chemical Engineering

The kinetics of internal mass transfer is determined to a considerable extent by the structural features of porous solids. The purpose of the present work is to study the specificity of the process of moisture removal by evaporation from elastic capillary-porous systems. © 2010 Pleiades Publishing, Ltd. Source

Filatova I.I.,National Academy of Sciences of Belarus | Trukhachev F.M.,Mogilev State University | Chubrik N.I.,National Academy of Sciences of Belarus
Plasma Physics Reports

The process of decay of dust structures formed of polydisperse grains injected into an RF discharge is investigated. The dust grain velocities after switching-off of the discharge are measured. The number density, dimensions, and residual charges of dust grains are estimated from the balance of forces acting on the grains after discharge is switched off. © 2011 Pleiades Publishing, Ltd. Source

Malyshev V.L.,Mogilev State University
Journal of Engineering Physics and Thermophysics

The kinetics of internal mass transfer in the course of evaporation of liquids in elastic capillary systems in which the transverse dimensions of the pores can both decrease and increase on exposure to intense thermal effect is investigated. Structural transformations in a material arise as a result of its dehydration. It is assumed that the channel radius changes simultaneously over the entire length, synchronously with the interface motion. Three schemes are possible in principle: a uniform change during the process, a faster change in the initial stage, and, conversely, a faster change in the closing stage. The time-limited additional thermal effect during the period that makes the main contribution to the overall duration of the process is capable of substantially enhancing mass transfer with minimum energy consumption. © 2016 Springer Science+Business Media New York Source

Akulich P.V.,A. V. Luikov Heat And Mass Transfer Institute | Akulich A.V.,Mogilev State University | Dragun V.L.,A. V. Luikov Heat And Mass Transfer Institute
International Journal of Heat and Mass Transfer

The article presents a system of equations of nonstationary wave motion of the disperse phase in a binary vapour-gas medium with account for the heat and mass transfer processes. The effect of pulsations of moist air and superheated steam on motion of gas suspension and rate of heat and mass transfer under the conditions of wave and resonance modes has been investigated in the course of the computational experiment. In particular, it is shown that in the range of the parameters studied gas pulsations lead to enhancement of interphase heat and mass transfer. Use of superheated vapour as a carrying phase results in heat and mass transfer enhancement compared with moist air. An analytical expression has been obtained for determining the frequency of gas velocity oscillations in a low-frequency region, at which maximum intensity of heat transfer is attained. A schematic of the pneumatic setup equipped with the chamber of pulse combustion with an aerodynamic valve is presented. © 2010 Elsevier Ltd. All rights reserved. Source

Emel'Yanenko V.N.,University of Rostock | Stepurko E.N.,University of Rostock | Verevkin S.P.,University of Rostock | Roganov G.N.,Mogilev State University
Russian Journal of Physical Chemistry A

The enthalpies of combustion and formation of 1,4-dioxane-2,6-dione were determined by combustion calorimetry. The transpiration method was used to obtain the temperature dependence of compound vapor pressures and the enthalpies of sublimation and vaporization. Differential scanning calorimetry was used to measure the enthalpy of fusion. Quantum-chemical calculations of the geometric, vibrational, and energy characteristics of the compound were performed, and the enthalpy of formation of the compound in the gas phase was estimated. Statistical thermodynamics methods were used to determine the thermodynamic properties of the compound in the ideal gas state over the temperature range 0-1500 K. Strain energies of some representatives of six-membered cyclic compounds were estimated. © 2011 Pleiades Publishing, Ltd. Source

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