Abstract
Results of an experimental study of pool boiling of distilled water on copper, brass, and SS surfaces are presented in this paper. Visualization of the boiling process has performed in the condition of high subcooling (ΔTsub = 45 K) with multiple bubbles randomly appearing onto the surface. The parameters related to bubble growth characteristics (bubble formation, base diameter, equivalent diameter, bubble growth time) are qualitatively and quantitatively presented for low surface superheat. The total bubble growth time is divided into initial bubble growth time and oscillatory growth time. For a low degree of wall superheat, oscillatory growth time is quite long (two orders of magnitude larger than the initial bubble growth time) and directly related to bubble size. It appears that the bubbles with a lower ratio of equivalent diameter to base diameter have a prolonged transition from hemispherical to an irregular spherical shape and higher volume before departure.
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Alispahić, M., Šikalo, Š. (2022). Oscillatory Behaviour of Bubbles. In: Ademović, N., Mujčić, E., Akšamija, Z., Kevrić, J., Avdaković, S., Volić, I. (eds) Advanced Technologies, Systems, and Applications VI. IAT 2021. Lecture Notes in Networks and Systems, vol 316. Springer, Cham. https://doi.org/10.1007/978-3-030-90055-7_25
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DOI: https://doi.org/10.1007/978-3-030-90055-7_25
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