ICONE23-1066 NUMERICAL SIMULATIONS FOR EFFECTS OF PRESSURE AND TEMPERATURE ON COUNTER-CURRENT FLOW LIMITATION AT LOWER END OF A VERTICAL PIPE

2015 ◽  
Vol 2015.23 (0) ◽  
pp. _ICONE23-1-_ICONE23-1
Author(s):  
Takayoshi Kusunoki ◽  
Michio Murase ◽  
Takashi Takata ◽  
Akio Tomiyama
Keyword(s):  
Numerical Simulations ◽  
Current Flow ◽  
Flow Limitation ◽  
Vertical Pipe ◽  
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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