Effects of fluid properties on interfacial and wall friction factors under counter-current flow limitation in a vertical pipe with sharp-edged lower end

2021 ◽  
Vol 373 ◽  
pp. 111020
Author(s):  
Raito Goda ◽  
Ryo Kurimoto ◽  
Kosuke Hayashi ◽  
Michio Murase ◽  
Akio Tomiyama
Keyword(s):  
Current Flow ◽  
Wall Friction ◽  
Flow Limitation ◽  
Vertical Pipe ◽  
Friction Factors ◽  
Fluid Properties ◽  
Counter Current Flow ◽  
Counter Current

Experimental Study on Counter Current Flow Limitation Based on Variation of Gap Size in Narrow Rectangular Channel during Quenching Process

2014 ◽  
Vol 590 ◽  
pp. 613-617
Author(s):  
Mulya Juarsa ◽  
Nandy Putra ◽  
Harinaldi ◽  
Anhar Riza Antariksawan
Keyword(s):  
Current Flow ◽  
Rectangular Channel ◽  
Cooling Water ◽  
Superficial Velocity ◽  
Gap Size ◽  
Flow Limitation ◽  
Narrow Channels ◽  
Quenching Process ◽  
Counter Current Flow ◽  
Counter Current

The Effect of gap size to counter current flow limitation (CCFL) in vertical rectangular channel was studied in this paper. Experiment was conducted by using two vertical plate with 1 mm, 2 mm, and 3 mm narrow gap. The initial temperature of plate was decided at 600oC. Flow rate and temperature of cooling water were controlled about 0.09 L/s and 90oC respectively. Non-dimensional superficial velocity for water is 0.05-0.09 and non-dimensional superficial velocity for vapor is 3.20-3.2. The result shows that the existence of CCFL in the vertical rectangular narrow channels. A new correlation for CCFL base on Wallis has been proposed.

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