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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   MARCH 2017 , Volume 16 , Number 12 ; Page(s) 433 To 444.
 
Paper: 

IDENTIFICATION OF FLOW PATTERNS MAPS FOR COUNTER-CURRENT GAS-LIQUID TWO-PHASE FLOW IN LARGE DIAMETER TUBES

 
 
Author(s):  ZAREI MOHSEN, ANSARI MOHAMMAD REZA*, ROSTAMI PEYMAN
 
* DEPARTMENT OF MECHANICAL ENGINEERING, TARBIAT MODARES UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

In this research, counter-current gas-liquid two phase flow is investigated adiabatically in vertical Plexiglas tubes with internal diameters of 60 mm, 80 mm and 110 mm. All of the tubes have the same height of 2 m. So far, there have been few studies on counter-current flows in large diameter tubes.
Water and air flow downward and upward through the tubes, respectively. Superficial velocities of air and water ranges are 1.77-7.17 m/s and 0.05-0.11 m/s for 60 mm tube, 0.99-4.03 m/s and 0.03-0.09 m/s for 80 mm tube and 0.55-2.26 m/s and 0.01-0.05 m/s for 110 mm tube. In addition to reverse flow, other main regimes can be observed as slug, churn and annular in the tubes. Our efforts in drawing the flow patterns map were aimed at minimizing uncertainties at the boundaries. Based on the obtained experimental results, slug and annular regimes gradually comprise smaller regions of the flow map as the tube diameter increases. However, churn regime contains larger area of the flow pattern maps.
Moreover, Kelvin – Helmholtz instability is observed in tubes and experimental and analytical results represent appropriate consequences in comparison. Eventually, validation of experimental flow patterns map is accomplished by theoretical results.

 
Keyword(s): TWO-PHASE FLOW, COUNTER-CURRENT FLOW, FLOW PATTERNS MAP, REVERSE FLOW, KELVIN – HELMHOLTZ INSTABILITY
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

ZAREI, M., & ANSARI, M., & ROSTAMI, P. (2017). IDENTIFICATION OF FLOW PATTERNS MAPS FOR COUNTER-CURRENT GAS-LIQUID TWO-PHASE FLOW IN LARGE DIAMETER TUBES. MODARES MECHANICAL ENGINEERING, 16(12 ), 433-444. https://www.sid.ir/en/journal/ViewPaper.aspx?id=572820



Vancouver: Copy

ZAREI MOHSEN, ANSARI MOHAMMAD REZA, ROSTAMI PEYMAN. IDENTIFICATION OF FLOW PATTERNS MAPS FOR COUNTER-CURRENT GAS-LIQUID TWO-PHASE FLOW IN LARGE DIAMETER TUBES. MODARES MECHANICAL ENGINEERING. 2017 [cited 2021August02];16(12 ):433-444. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572820



IEEE: Copy

ZAREI, M., ANSARI, M., ROSTAMI, P., 2017. IDENTIFICATION OF FLOW PATTERNS MAPS FOR COUNTER-CURRENT GAS-LIQUID TWO-PHASE FLOW IN LARGE DIAMETER TUBES. MODARES MECHANICAL ENGINEERING, [online] 16(12 ), pp.433-444. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=572820.



 
 
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