The International Conference on Multiphase Systems, ICMS'2000
|Thermodynamic Approach to the Transfer Phenomena Description in Disperse Systems under a Radio-Frequency Electromagnetic Field Impact|
Kovalyova L. A.
Bashkir State University, Ufa, Russia.
The effect of powerful radio-frequency electromagnetic fields on the multicomponent systems can considerably intensify heat and mass transfer processes, that enables to use these fields in various technological processes, in particular, with heavy oils production increase. In this connection the necessity in theoretical and experimental researches of interaction of radio-frequency (RF) electromagnetic (EM) fields with materials of petroleum technology has increased. The thermodynamics of multicomponent systems with cross transfer effects based on ideas and methods of thermodynamics irreversible processes has been formulated in our paper. There have been obtained the numerical evaluation of the thermodiffusion coefficients by comparing experiments and mathematics modeling of a filtration process in multicomponent hydrocarbonaceous systems under the radio-frequency electromagnetic field influence. A peculiarity of interaction of radio-frequency electromagnetic fields with dispersible systems is the delay of polarizing processes in comparison with change of parameters of radio-frequency electromagnetic fields. As a result, the process of polarization becomes non-equilibrium and is accompanied by an intensive dissipation of energy of the field. The lag effect of thermo and hydrodynamic processes as contrasted to electrodynamic allows to characterize a condition of medium by values, mean on the period of a field.