Abstract
The vaporization of liquid n-butane at its superheat limit temperature is filmed at speeds of up to 5 × 10 5 frames per second and the associated far-field pressure is studied. Bubble growth rates of up to 25 m s −1 are measured and compared with theoretical models and previous experimental data. The far-field pressure is distorted by multiple reflections within the butane droplet, although this does not explain all the structure in the first 13 μs or so of the recorded pressures; in particular, bubble growth becomes very dramatic after about 7 μs. Various other details of the pressure traces can be understood in terms of bubble behaviour.
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