TY - JOUR

T1 - High-speed visualization and image processing of sub-atmospheric water boiling on a transparent heater

AU - Serdyukov, Vladimir

AU - Malakhov, Ivan

AU - Surtaev, Anton

PY - 2020/10/1

Y1 - 2020/10/1

N2 - 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

AB - 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

KW - High-speed visualization

KW - Image processing

KW - Sub-atmospheric boiling

KW - Transparent heater design

KW - Vapor bubbles evolution

KW - 2-PHASE FLOW

KW - VAPOR BUBBLES

KW - DYNAMICS

KW - VOID FRACTION

UR - http://www.scopus.com/inward/record.url?scp=85087047710&partnerID=8YFLogxK

U2 - 10.1007/s12650-020-00660-z

DO - 10.1007/s12650-020-00660-z

M3 - Article

AN - SCOPUS:85087047710

VL - 23

SP - 873

EP - 884

JO - Journal of Visualization

JF - Journal of Visualization

SN - 1343-8875

IS - 5

ER -