Investigation of molecular gas admixture diffusion, heat transfer and stress state in amorphous solid subjected to thermal infrared radiation

A simple solution strategy for coupled piezo-diffusion in elastic solids

“…1 can be written basing on a control volume which is closed with respect to the solid and open with respect to the fluid, as proposed in [10,[22][23][24]. An alternative approach, consists of considering a control volume which moves with the body, as is usual in the classical mixture theory, but assuming that the fluid is dilute in the body (diluteness hypothesis) [25][26][27]. As can be easily realized, this last approach leads to developments analogous to the present one.…”

Temperature field of a layer of a fibrous composite material under conditions of external thermal radiation

“…Since, in the transfer equation, the radiation emission by the media is neglected, and the absorption and scattering coefficients are independent of temperature, the system of the equations of radiation transfer and heat conduction becomes unbound. Then we first calculate the radiation intensity from the transfer equation, which enables us to determine heat sources (as a result of the action of radiation) in the equation of heat conduction, and then from the equation of heat conduction determine the temperature state of the layer of the composite material [4].…”

Thermal behavior of absorbing and scattering glass media containing molecular water impurity

“…where c 1 , c 2 are radiation constants [10] and k (0) , k (1) [8] are dimensionless coefficients accounting for the emissivity of the real radiation source as well as for its geometrical position with respect to an irradiated object. In particular case of the radiation source in a shape of infinite surface parallel to an infinite irradiated layer, the coefficient k (s) is simply the emissivity of the radiation source.…”

“…Indeed, individual molecules do not possess physical characteristics proper for their agglomeration. To overcome this difficulty, the method to determine E I approximately was proposed in [8]. Omitting technicalities given there, we arrive at the following equation for the determination of E I…”

“…This paper contributes to the field by analysing the selective effect of radiation on a multicomponent glass medium. Previous investigations presented in [7,8] are improved here by accounting for radiation scattering by water impurities molecules. A selective effect of radiation is accounted for not only by different thermal states of constituents, but also by a specific water diffusion rate.…”