High-speed visualization and image processing of sub-atmospheric water boiling on a transparent heater

被引：16
作者：
Serdyukov, Vladimir [1 ,2 ,3 ]
Malakhov, Ivan [1 ,2 ]
Surtaev, Anton [1 ,2 ]
机构：
[1] Novosibirsk State Univ, Novosibirsk, Russia
[2] Kutateladze Inst Thermophys, Novosibirsk, Russia
[3] Chinakal Inst Min, Novosibirsk, Russia
来源：
JOURNAL OF VISUALIZATION | 2020年 / 23卷 / 05期
基金：
俄罗斯科学基金会;
关键词：
Sub-atmospheric boiling; Vapor bubbles evolution; High-speed visualization; Image processing; Transparent heater design; VOID FRACTION; VAPOR BUBBLES; 2-PHASE FLOW; DYNAMICS;
D O I：
10.1007/s12650-020-00660-z
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The paper is devoted to the processing and analysis of the high-speed visualization data on water pool boiling in the pressure range of 5.5-103 kPa. The study of the vapor bubbles dynamics and evolution of void fraction near a heated wall during boiling was performed using a special design of a transparent heating element and high-speed visualization from its bottom side. To analyze the wide array of video data, automatic image processing programs were developed. As a result, a detailed statistical analysis of the growth curves and departure diameters of vapor bubbles during boiling at different pressures was carried out. It was shown that at ultra-low pressure 5.5 kPa after the departure of massive vapor bubbles the pulsating boiling regime was occurred. A method based on the estimation of void fraction near a heated wall was proposed and implemented for the description of this cyclic boiling regime at low sub-atmospheric pressure.
引用
收藏
页码：873 / 884
页数：12
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