FLUCTUATING CHARACTERISTICS OF TWO-PHASE AIR-WATER SLUG FLOW IN PRESSURIZED PIPELINES

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KABIRI SAMANI A.A.R.

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Journal: WATER AND WASTEWATER Year:2009 | Volume:20 | Issue:2 (70) Page(s): 62-68

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Information Journal Paper

Title

FLUCTUATING CHARACTERISTICS OF TWO-PHASE AIR-WATER SLUG FLOW IN PRESSURIZED PIPELINES

Author(s)

KABIRI SAMANI A.A.R. | Issue Writer Certificate

Keywords

FLUCTUATIONSQ3

TWO-PHASE FLOWQ3

SLUG FLOWQ3

PRESSURIZED PIPELINEQ3

Abstract

Two-phase gas-liquid flows occur in a wide variety of situations, e.g., in chemical processing, power generation, water supply systems, and petroleum industry. The study of two-phase fluid flows is of great importance in hydraulic engineering. This type of flow typically occurs in pressurized flow tunnels, culverts, siphons, and bends in which the gas trapped in water pipelines releases from the water as the pressure reduces. The relative discharge rate of fluids and the pipe slope produce a wide variety of flow patterns including stratified, wavy, and SLUG FLOWs. In this paper, the unstable two-phase air-water flow is experimentally investigated. The image processing technique is applied for estimating the FLUCTUATIONS of such parameters as void fraction and length, period and celerity of slug waves. It is shown that the pipe inclination and air flow rate have significant effects on flow characteristics. Also, the relative wave length (L/D, D is the pipe diameter) in a SLUG FLOW varies from 10 to 85, while air bubble length varies from 1/3 to 1/2 of wave length.

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APA: Copy

KABIRI SAMANI, A.A.R.. (2009). FLUCTUATING CHARACTERISTICS OF TWO-PHASE AIR-WATER SLUG FLOW IN PRESSURIZED PIPELINES. WATER AND WASTEWATER, 20(2 (70)), 62-68. SID. https://sid.ir/paper/104002/en

Vancouver: Copy

KABIRI SAMANI A.A.R.. FLUCTUATING CHARACTERISTICS OF TWO-PHASE AIR-WATER SLUG FLOW IN PRESSURIZED PIPELINES. WATER AND WASTEWATER[Internet]. 2009;20(2 (70)):62-68. Available from: https://sid.ir/paper/104002/en

IEEE: Copy

A.A.R. KABIRI SAMANI, “FLUCTUATING CHARACTERISTICS OF TWO-PHASE AIR-WATER SLUG FLOW IN PRESSURIZED PIPELINES,” WATER AND WASTEWATER, vol. 20, no. 2 (70), pp. 62–68, 2009, [Online]. Available: https://sid.ir/paper/104002/en

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