Open AccessComprehensive study of boiling regimes with use of high-speed imaging and gradient heatmetry
Author(s) -
С. З. Сапожников,
V. Yu. Mityakov,
A. V. Mityakov,
А. В. Павлов,
P G Bobylev,
N E Kikot,
A. V. Bikmulin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2127/1/012058
Subject(s) - boiling , subcooling , heat flux , mechanics , materials science , heat transfer , nucleate boiling , thermodynamics , flux (metallurgy) , volume (thermodynamics) , physics , metallurgy
In the study of heat transfer during boiling, optical methods and thermometry are prevailing. The possibilities of experiment are significantly expanded by new technology – gradient heatmetry, in which heterogeneous gradient heat flux sensors with time constant of nanoseconds are used. When studying of boiling of subcooled water in a large volume on the surface of the titanium sphere, preheated up to 300-500 °C, heatmetry was combined with visualization of boiling modes using a high-speed camera Evercam 1000-4-M. It is possible to obtain the distribution of heat flux per unit area along the latitudinal coordinate and to relate the local heat flux per unit area with observed boiling regimes and initial temperatures of water and the model.