Investigation of slug flow characteristics in hilly terrain pipeline using ultrasonic Doppler method

Yin, Ping; Cao, Xuewen; Zhang, Pan; Yang, Wen; Bian, Jiang; Guo, Dan

doi:10.1016/j.ces.2019.115300

Cited by 27 publications

(3 citation statements)

References 36 publications

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“…Some special phenomena in pipelines, such as unstable flow [1,2] and erosion [3][4][5], can have adverse effects on pipelines and downstream equipment. In T-junction systems, gas-liquid two-phase flows (GLTPF) are often split into multiple branches.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Analysis of Gas-Liquid Flow Breakdown in a T-Junction

Ma,

Han,

et al. 2024

FDMP

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When a gas-liquid two-phase flow (GLTPF) enters a parallel separator through a T-junction, it generally splits unevenly. This phenomenon can seriously affect the operation efficiency and safety of the equipment located downstream. In order to investigate these aspects and, more specifically, the so-called bias phenomenon (all gas and liquid flowing to one pipe, while the other pipe is a liquid column that fluctuates up and down), laboratory experiments were carried out by using a T-junction connected to two parallel vertical pipes. Moreover, a GLTPF prediction model based on the principle of minimum potential energy was introduced. The research results indicate that this model can accurately predict the GLTPF state in parallel risers. The boundary of the slug flow and the churn flow in the opposite pipe can be predicted. Overall, according to the results, the pressure drop curves of the two-phase flow in the parallel risers are basically the same when there is no bias phenomenon, but the pressure drop in the parallel riser displays a large deviation when there is a slug flow-churn flow. Only when the parallel riser is in a state of asymmetric flow and one of the risers produces churn flow, the two-phase flow is prone to produce the bias phenomenon.

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Section: Introductionmentioning

confidence: 99%

An Experimental Analysis of Gas-Liquid Flow Breakdown in a T-Junction

Ma,

Han,

et al. 2024

FDMP

View full text Add to dashboard Cite

show abstract

“…A Non-invasive twophase flowmeter eliminates causes of pressure drop and corrosion of sensor, and importantly, it will help to reduce installation cost and maintenance cost (Kumara et al, 2010a). Ultrasonic Doppler technique is good choice for two-phase flow measurement as it operates without flow disturbance and not restricted by pipeline material (Yin et al, 2019). Ultrasonic techniques have been widely used for both phase velocity and phase fraction measurements (Thorn et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…PWUD utilises a single transducer to intercept the moving stream by sending short ultrasonic burst and receiving echoes from tracer particle along a sound beam. A typical example of such a sensor is described by (Baker and Yates, 1973;Murai et al, 2010;Yin et al, 2019). The CWUD uses two separate transmitting and receiving transducers to measure the average flow velocity (Abbagoni and Yeung, 2016;Brody et al, 1974;Dong et al, 2016Dong et al, , 2015Tan et al, 2021).…”

Section: Introductionmentioning

confidence: 99%