scholarly journals Analytical Study on Mechanism of Countercurrent Flow Limitation in Vertical Rectangular Channels.

1994 ◽  
Vol 60 (574) ◽  
pp. 2176-2182
Author(s):  
Yukio Sudo
Keyword(s):  
Analytical Study ◽  
Countercurrent Flow ◽  
Flow Limitation ◽  
Rectangular Channels

Countercurrent flow limitation in inclined channels with bends

1994 ◽  
Vol 152 (1-3) ◽  
pp. 379-388 ◽  
Author(s):  
S.M. Ghiaasiaan ◽  
R.E. Turk ◽  
S.I. Abdel-Khalik
Keyword(s):  
Countercurrent Flow ◽  
Flow Limitation ◽  
Inclined Channels

scholarly journals Effects of Diameters on Countercurrent Flow Limitation at a Square Top End in Vertical Pipes

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Michio Murase ◽  
Koji Nishida ◽  
Toshihide Torige ◽  
Toshiya Takaki ◽  
Raito Goda ◽  
...  
Keyword(s):  
Water Level ◽  
Flow Rate ◽  
Liquid Flow ◽  
Liquid Flow Rate ◽  
Strong Relationship ◽  
Countercurrent Flow ◽  
Flow Limitation ◽  
Vertical Pipe ◽  
Surge Line ◽  
Inclined Pipe

The falling liquid flow rate under flooding conditions is limited at a square top end of a vertical pipe in the pressurizer surge line with the diameter of about 300 mm that consists of a vertical pipe, a vertical elbow, and a slightly inclined pipe with elbows. In this study, therefore, we evaluated effects of diameters on countercurrent flow limitation (CCFL) at the square top end in vertical pipes by using existing air-water data in the diameter range of D = 19-250 mm. As a result, we found that there was a strong relationship between the constant CK and the slope m in the Wallis-type correlation where the Kutateladze parameters were used for the dimensionless gas and liquid velocities. The constant CK and the slope m increased when the water level is increased in the upper tank h. CCFL at the square top end of the vertical pipes could be expressed by the Kutateladze parameters with CK = 1.53±0.11 and m = 0.97 for D ≥ 30 mm. The CK values were smaller for D = 19-25 mm than those for D ≥ 30 mm.

Countercurrent flow limitation at a square top end of vertical pipes and in a pressurizer surge line

2020 ◽  
Vol 363 ◽  
pp. 110624
Author(s):  
Toshiya Takaki ◽  
Michio Murase ◽  
Koji Nishida ◽  
Toshihide Torige ◽  
Akio Tomiyama
Keyword(s):  
Countercurrent Flow ◽  
Flow Limitation ◽  
Surge Line

A Proposed Calculational Model for Two-Phase Countercurrent Flow Limitation in Channels with Abrupt Area Change

1990 ◽  
Vol 89 (2) ◽  
pp. 227-232
Author(s):  
Tanvir Salim ◽  
Woon-Shing Yeung ◽  
R. Thomas Fernandez
Keyword(s):  
Countercurrent Flow ◽  
Flow Limitation ◽  
Two Phase ◽  
Area Change

Prediction of Countercurrent Flow Limitation and Its Uncertainty in Horizontal and Slightly Inclined Pipes

2017 ◽  
Vol 197 (2) ◽  
pp. 140-157 ◽  
Author(s):  
Michio Murase ◽  
Yoichi Utanohara ◽  
Takayoshi Kusunoki ◽  
Yasunori Yamamoto ◽  
Dirk Lucas ◽  
...  
Keyword(s):  
Countercurrent Flow ◽  
Flow Limitation ◽  
Inclined Pipes

Countercurrent flow limitation in a pressurizer surge line

2018 ◽  
Vol 326 ◽  
pp. 175-182 ◽  
Author(s):  
Yasunori Yamamoto ◽  
Michio Murase ◽  
Akio Tomiyama
Keyword(s):  
Countercurrent Flow ◽  
Flow Limitation ◽  
Surge Line
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