This article is cited in 5 papers

Optical studies of the initial stage of spontaneous boiling-up

A. L. Gurashkin, A. D. Yampol'skiy, A. A. Starostin, P. V. Skripov

Institute of Thermal Physics, Ural Branch, Russian Academy of Sciences, Ekaterinburg

Abstract: Spontaneous liquid boiling-up is studied using the technique of fiber-optic reflectometry. The speed of the experimental technique (10 MS/s) and small dimensions of the measurement area (9 $\mu$m) have opened new possibilities for monitoring the initial stage of boiling-up. When using a double-probe scheme, the fact of measuring the prognostic signal at different times by two sensitive elements of the optical probes was discovered. Based on the experimental results, a hypothesis was formulated regarding the local character of the appearance of the perturbation source generating the observed signal in a superheated liquid. An estimate was obtained for the rate of perturbation propagation in a wide variation range of the degree of liquid superheating.

Received: 13.02.2013

 English version: Technical Physics Letters, 2013, 39:8, 751–754

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