TY - JOUR
T1 - Experimental study on the influence of buoyancy on steam bubble condensation at low steam mass flux
AU - Yang, Qingchuan
AU - Qiu, Binbin
AU - Chen, Weixiong
AU - Zhang, Dan
AU - Chong, Daotong
AU - Liu, Jiping
AU - Yan, Junjie
N1 - Publisher Copyright:
© 2021
PY - 2021/11/1
Y1 - 2021/11/1
N2 - The influence of buoyancy on pressure oscillation amplitude and frequency was studied with two steam jet directions in the range of steam mass flux 8.34–50.13 kg/(m2·s) and water temperature 40–85 °C. At small steam mass flux, the steam bubble pattern of vertical downward jet is attached bubble regime because the direction of steam momentum and buoyancy are opposite. The pressure oscillation frequency is less than 20 Hz, and the pressure oscillation amplitude is less than 1 kPa, which is much smaller than that for a vertical upward jet. It is conducive to the safety of relevant equipment. For the rough grown detached bubble regime, due to the influence of buoyancy, on the pressure oscillation frequency of vertical downward jet is smaller than that of vertical upward jet. Two dimensionless correlations of the pressure oscillation frequency were presented considering the influence of buoyancy. The prediction errors are within ±11%.
AB - The influence of buoyancy on pressure oscillation amplitude and frequency was studied with two steam jet directions in the range of steam mass flux 8.34–50.13 kg/(m2·s) and water temperature 40–85 °C. At small steam mass flux, the steam bubble pattern of vertical downward jet is attached bubble regime because the direction of steam momentum and buoyancy are opposite. The pressure oscillation frequency is less than 20 Hz, and the pressure oscillation amplitude is less than 1 kPa, which is much smaller than that for a vertical upward jet. It is conducive to the safety of relevant equipment. For the rough grown detached bubble regime, due to the influence of buoyancy, on the pressure oscillation frequency of vertical downward jet is smaller than that of vertical upward jet. Two dimensionless correlations of the pressure oscillation frequency were presented considering the influence of buoyancy. The prediction errors are within ±11%.
KW - Buoyancy influence
KW - Condensation patterns
KW - Pressure oscillation
KW - Steam-water condensation
UR - https://www.scopus.com/pages/publications/85108855271
U2 - 10.1016/j.expthermflusci.2021.110467
DO - 10.1016/j.expthermflusci.2021.110467
M3 - 文章
AN - SCOPUS:85108855271
SN - 0894-1777
VL - 129
JO - Experimental Thermal and Fluid Science
JF - Experimental Thermal and Fluid Science
M1 - 110467
ER -