Experimental investigation of gas-liquid flow in a vertical venturi installed downstream of a horizontal blind tee flow conditioner and the flow regime transition
| Autor: | Muhammad Alif Bin Razali, Wai Lam Loh, Cheng-Gang Xie |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Flow visualization
Flow (psychology) 0207 environmental engineering Mixing (process engineering) 02 engineering and technology Mechanics 01 natural sciences Homogenization (chemistry) Flow measurement Computer Science Applications Volumetric flow rate 010309 optics Flow conditions Modeling and Simulation Venturi effect 0103 physical sciences Electrical and Electronic Engineering 020701 environmental engineering Instrumentation Geology |
| Zdroj: | Flow Measurement and Instrumentation. 80:101961 |
| ISSN: | 0955-5986 |
| Popis: | A venturi device is commonly used as an integral part of a multiphase flowmeter (MPFM) in real-time oil-gas production monitoring. Partial flow mixing is required by installing the venturi device vertically downstream of a blind tee pipework that conditions the incoming horizontal gas-liquid flow (for an accurate determination of individual phase fraction and flow rate). To study the flow-mixing effect of the blind tee, high-speed video flow visualization of gas-liquid flows has been performed at blind tee and venturi sections by using a purpose-built transparent test rig over a wide range of superficial liquid velocities (0.3–2.4 m/s) and gas volume fractions (10–95%). There is little ‘homogenization’ effect of the blind tee on the incoming intermittent horizontal flow regimes across the tested flow conditions, with the flow remaining intermittent but becoming more axis-symmetric and predictable in the venturi measurement section. A horizontal (blind tee) to vertical (venturi) flow-pattern transition map is proposed based on gas and liquid mass fluxes (weighted by the Baker parameters). Flow patterns can be identified from the mean and variance of a fast electrical capacitance holdup measured at the venturi throat. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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