EXPERIMENTAL INVESTIGATION OF THE INSTABILITY OF THE MECHANICAL EQUILIBRIUM OF A FOUR-COMPONENT MIXTURE WITH BALLAST GASES

The instability of the mechanical equilibrium of the diffusion mixing of a four-component mixture with ballast gases by the two-flask method was investigated experimentally. The main gases helium and methane were diluted with nitrous oxide and propane, respectively. An analysis of the evolution of the diffusion mixing of these gases with time has shown that, in the case where the diffusion proceeding in a system with a ballast gas is unstable, in it there arises circulation of the gas-diluent by the diffusion channel from one flask to the other of a diffusion apparatus. It was established that the circulation of the ballast gas by the diffusion channel makes it possible to sustain the unsteady multicomponent diffusion during a long time and, in so doing, to decelerate the change of this regime to the regime of stable mass transfer
   
Author:  M. S. Moldabekova, M. K. Asembaeva, and A. A. Akzholov
Keywords:  diffusion, ballast gas, convection, two-fl ask apparatus, instability, mechanical equilibrium
Page:  417