Transport phenomena in non-uniform gas subjected to laser radiation

International Conference "Structural and Phase Transformations in Materials: Theory, Computer Modelling and Experiment"

材料科学;计算机科学

Chermyaninov, I.V.^1 ; Chernyak, V.G.^1

Department of Physics, Ural Federal University, Yekaterinburg

620083, Russia^1

关键词: Boundary surfaces;    Heat and mass transports;    Kinetic coefficient;    Non-equilibrium stationary state;    Onsager reciprocity;    Slip flow regimes;    Temperature and pressures;    Transport phenomena;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/192/1/012013/pdf
DOI  :  10.1088/1757-899X/192/1/012013

来源: IOP

【 摘 要 】

The paper discusses the theory of transport processes in one-component gas located in capillary subjected to resonant laser radiation and both temperature and pressure gradients. The equations for the kinetic coefficients determining heat- and mass transport in the gas are derived on the basis of modified Boltzmann equations for the excited and unexcited particles. The cross kinetic coefficients satisfy the Onsager reciprocity for all Knudsen numbers and laws of gas particles interaction with each other and with boundary surface of the capillary. Analysis of possible non-equilibrium stationary states of first and second order for the one-component gas in the capillary has been developed on the basis of the Prigogine theorem of stationary states. Equations describing the stationary states in Knudsen limit (Kn >> 1) and slip-flow regime (Kn