scholarly journals Two-phase flow in parallel channels: Mal-distribution, hysteresis and mitigation strategies

2022 ◽  
Vol 247 ◽  
pp. 117044
Author(s):  
Lei Zhang ◽  
Guilin Hu ◽  
Xiaotao T. Bi
Keyword(s):  
Two Phase Flow ◽  
Mitigation Strategies ◽  
Phase Flow ◽  
Two Phase ◽  
Parallel Channels

The Influence of Non-Uniform Heating on Two-Phase Flow Instability in Parallel Channels

2013 ◽  
Author(s):  
Xiaodong Lu ◽  
Linglan Zhou ◽  
Hong Zhang ◽  
Yingwei Wu ◽  
Guanghui Su ◽  
...  
Keyword(s):  
Heat Flux ◽  
Two Phase Flow ◽  
Flow Instability ◽  
System Stability ◽  
System Control ◽  
Phase Flow ◽  
Uniform Heating ◽  
Two Phase ◽  
System Pressure ◽  
Parallel Channels

The two-phase flow instability in parallel channels heated by uniform and non-uniform heat flux has been theoretically studied in this paper. Based on the homogeneous flow model in two-phase region, the system control equations of parallel channels were established. Semi-implicit finite-difference method and staggered mesh method were used to discretize the system control equations and the difference equations were solved with a chasing method. The cosine profile and uniform constant heat flux represent the non-uniform and uniform heating condition, respectively. The marginal stability boundaries (MSB) of parallel channels and the three-dimensional instability spaces (or instability reefs) of different heat flux models were obtained. For cosine profile heating, the stability of parallel channels increases with the increase of the system pressure and inlet resistant coefficient. In high inlet subcooling region, cosine heat flux can strengthen the system stability. However, in low inlet subcooling region, the negative effect to system stability will be caused by non-uniform heating. The increase of inlet resistant coefficient will move the turning point of the MSB to high inlet subcooling number.

scholarly journals Heating limits of boiling downward two-phase flow in parallel channels.

1989 ◽  
Vol 31 (6) ◽  
pp. 699-709
Author(s):  
Kenji FUKUDA ◽  
Takaaki SAKAI ◽  
Tetsuya KONDOH ◽  
Shu HASEGAWA
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Parallel Channels

Theoretical research on two-phase flow instability in parallel channels

2009 ◽  
Vol 239 (7) ◽  
pp. 1294-1303 ◽  
Author(s):  
Y.J. Zhang ◽  
G.H. Su ◽  
X.B. Yang ◽  
S.Z. Qiu
Keyword(s):  
Two Phase Flow ◽  
Flow Instability ◽  
Theoretical Research ◽  
Phase Flow ◽  
Two Phase ◽  
Parallel Channels
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