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Journal of Applied Mechanics and Technical Physics

2002 year, number 1

Flicker noise and self-organized criticality in crisis boiling regimes

A. V. Reshetnikov, V. N. Skokov, V. P. Koverda, V. P. Skripov, N. A. Mazheiko, A. V. Vinogradov
Institute of Thermal Physics,
Ural Division, Russian Academy of Sciences, Ekaterinburg 620016


The paper describes an experimental
study of thermal fluctuations during
transition from bubble to film boiling
of water on a wire heater and
fluctuations of the shape of a
superheated liquid jet discharged from a
high-pressure vessel. It is found that
for a heat-transfer crisis on the wire
heater and for intense volume boiling of
the superheated liquid jet, the
fluctuation power spectrum has a low-
frequency component (flicker noise)that
diverges under the law 1/f. This effect
is due to nonequilibrium phase
transitions in the system<!colon!> the
heat<!dash!>transfer crisis during
transition from bubble to film boiling
and a flow crisis during boiling of the
superheated liquid jet. P. 109-113