EVOLUTION OF THE DIMENSIONAL SPECTRUM AND THE CONDENSATIONAL STABILITY OF PARTICLES IN A FIELD OF TURBULENT-FLOW-TEMPERATURE PULSATIONS

The evolution of the dimensional spectrum of condensed particles (CP) in a turbulent gas flow is examined with allowance for vapor depletion. We also examine the effect of temperature fluctuations on the condensational stability of the CP's. It is shown that growth of the particle system, including for T//0 equals const, is accompanied by broadening of the dimensional spectrum at the initial stage of growth (due to turbulent pulsations) and by contraction of the spectrum during the final growth stage (due to vapor depletion). Investigation of the stability of a particle system against condensation-evaporation processes taking place in temperature fluctuation ranges showed that particles will evaporate on the average, even at S//0 equals 1 (S//0 is saturation, calculated for the mean temperature).