Abstract
An experimental investigation of the boiling-up dynamics of a jet of superheated water at the discharge through a short nozzle of small diameter (d=0.2 mm) has been conducted. A change in the shape of a boiling-up jet has been traced at various degrees of superheat. A complete flow opening has been established in a temperature range T=493 – 583K. The instability of a complete breakup has been revealed. On the bases of experimental data the dependence of a change of an opening jet angle on the saturation pressure has been plotted in dimensionless coordinates. Low-frequency pulsations with a power spectrum inversely proportional to the frequency (1/f - spectrum) have been found under changes of shapes of a boiling-up flow.
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