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

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ZAREI MOHSEN; ANSARI MOHAMMAD REZA; ROSTAMI PEYMAN

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Journal: Modares Mechanical Engineering Year:2017 | Volume:16 | Issue:12 Page(s): 433-444

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Title

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 | Issue Writer Certificate

Keywords

TWO-PHASE FLOWQ2

COUNTER-CURRENT FLOWQ1

FLOW PATTERNS MAPQ1

REVERSE FLOWQ1

KELVIN – HELMHOLTZ INSTABILITYQ1

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.

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APA: Copy

ZAREI, MOHSEN, ANSARI, MOHAMMAD REZA, & ROSTAMI, PEYMAN. (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. SID. https://sid.ir/paper/178168/en

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[Internet]. 2017;16(12 ):433-444. Available from: https://sid.ir/paper/178168/en

IEEE: Copy

MOHSEN ZAREI, MOHAMMAD REZA ANSARI, and PEYMAN ROSTAMI, “IDENTIFICATION OF FLOW PATTERNS MAPS FOR COUNTER-CURRENT GAS-LIQUID TWO-PHASE FLOW IN LARGE DIAMETER TUBES,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 12 , pp. 433–444, 2017, [Online]. Available: https://sid.ir/paper/178168/en

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