Heat transfer in two phase systems is characterized by not only mean values of parameters of a process but and random declinations from mean value of the parameters. Dynamics and evolution of random pulsations can be characterized by a power spectrum of fluctuations. A spectrum restricted from the side of low frequencies corresponds to steady state processes of heat and mass transfer. Experimental investigation of fluctuation dynamics of heat transfer in crisis and transition regimes has shown that such a situation in low-frequency asymptotic behavior is not observed always. High-energy low-frequency pulsations with power spectrum inversely proportional to frequency have been observed in burnout, in jets of superheated liquids under condition of explosive boiling, in vibratory combustion regimes and arc electric discharges. The typical feature of the system with flicker noise is that most part of fluctuation energy is connected with very slow processes and moreover it means a possibility of catastrophically huge outliers in the system.
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