Simulation of Coupled Thermal and Diffusion Processes Taking Into Account a Substance Decay in a Randomly Nonhomogeneous Stratified Strip
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 4
Abstract
Processes of thermodiffusion of decaying substance are investigated in a stochastically nonhomogeneous body. The statement of the contact initial-boundary value problem is made with taking into account the ideal contact conditions for temperature and non-ideal ones for concentration. The reference problem is reduced to an equivalent set of integral-differential equations. Its solution is found by the method of successive approximations in the form of Neumann series. The calculating formulae are obtained for the temperature and concentration fields averaged over the ensemble of phase configurations under the condition of the uniform distribution of phases in the body. A software package is developed and on the basis of which a dependence of averaged fields of temperature and concentration on the medium characteristics is investigated. It is shown that the time of the steady-state regime for the temperature is five orders less than for the concentration.
Authors and Affiliations
A. Y. Davydok, O. Y. Chernukha, V. Y. Goncharuk
Keywords
Related Articles
- EP ID EP314840
- DOI -
- Views 80
- Downloads 0
Interaction Studying in System GeO - B2O3 by Spectroscopic Methods
Because of X-ray amorphous character of GeO and B2O3 for study of interaction between them methods of IR transmission spectroscopy and spectroscopy of diffuse reflectance are applied. Essential change of positionand inte...
Electrical Conductivity of Nitrogen-Containing Nanoporous Carbon Materials
Dependence of electro-physical characteristics of nanoporous carbon material on the degree of compaction its elements have been investigated. It is ascertained that maximum electrical conductivity occurs with the pressur...
Effect of Solid-Phase Transformations on Plasticity Steels
Plasticity steels as dependence on concentration alloying element is researched. By example of researching ultimate strength (σ0,2) iron-carbon and iron-chrome steels is shown, that plasticity of metals depend on the sol...
Raman Spectroscopy Of Fullerene-Like Molecules Of Silicon Dioxide (SiO2)N(H2O)N/2
The Raman spectra of monosilicic, disilicic acid molecules, tetra- and pentasilicic acid molecules with cyclic structure, cage-like okta- and dekasilicic asid molecules, and of fullerene-like molecule (SiO<sub>2</sub>)<s...
Electric Stimulation of Charge-Discharge Processes of Electrochemical Capacitors
The research is devoted to study the impact of charge-discharge processes in electrochemical capacitors. Nanoporous carbon material was used like electrode material , which was gotten through carbonization of raw plant m...