Identification of gas-liquid flow regimes using a non-intrusive Doppler ultrasonic sensor and virtual flow regime maps

Nnabuife, Somtochukwu Godfrey; Pilario, Karl Ezra S.; Lao, Liyun; Cao, Yi; Shafiee, Mahmood

doi:10.1016/j.flowmeasinst.2019.05.002

Cited by 48 publications

(30 citation statements)

References 35 publications

(40 reference statements)

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“…A bank of two blowers/compressors supply the air. A peak air flow rate of 1410m 3 /hr Free Air Delivery (FAD) at seven bars can be supplied if the compessors are arranged in parallel [20]. An 8m 3 capacity receiver accumulates the air in order to maintain a constant pressure of the air from the compressors.…”

Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

“…An 8m 3 capacity receiver accumulates the air in order to maintain a constant pressure of the air from the compressors. After the receiver, the air flows through a bank of three filters (medium, coarse, fine) followed by a cooler so that condensates and debris are removed prior to entering the flow meters [20]. The water is provided from a water tank with 12.5m 3 capacity.…”

Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

“…The water pumps are controlled remotely using the DeltaV SACDA system. The water flow rate is measured using a 1-inch Rosemount 8742 magnetic flow meter (up to 7.36 l/s) and 3-inch Foxboro CFT50 Coriolis meter (up to 30kg/s) [20].…”

Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

“…Following the experiment, the water and air are separated in an 11.12m 3 horizontal multiphase gravity separator. After separating and cleaning, the air is emitted into the atmosphere while water enters a 1.6m 3 coalescer where additionally cleaning takes place before being returned to the storage tank [20]. A schemetic of the venturi flow meter is presented in Figure 2.…”

Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

“…The S-shaped 2-inch pipe is transparent to allow observation of the different flow regimes. The desired flow regime is obtained by control of the flow rate is by adjusting the the valves via the DeltaV SCADA [20].…”

Section: B the S-shape Riser Test Sectionmentioning

confidence: 99%

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Venturi Multiphase Flow Measurement based Active Slug Control

Nnabuife

Whidborne

Lao

et al. 2019

2019 25th International Conference on Automation and Computing (ICAC)

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Riser slug flow poses a significant challenge to offshore oil production systems, most especially for oil fields in their later life. Active control of slugging through choking has been proven a practical approach in eliminating riser slug flow in oil production pipeline-riser systems. However, existing conventional active slug control systems may reduce oil production significantly due to excessive over choking. Again, some of the existing active slug flow control systems rely on seabed measurements, which are difficult to maintain, costly to install, unreliable, and seldom readily available. This study is an experimental investigation of the feasibility of active riser slug control by taking topside differential pressure measurement from the inlet of the venturi flow meter to the throat. Experimental results indicate that under active slug flow control, the system was able to eliminate slug flow at a higher valve opening when compared to manual choking. A valve opening of 24% with riser base pressure at 2.85 bar from open loop unstable of 23% was recorded, which is superior to manual choking which maintained flow stability up to 21% valve opening with riser base pressure of 3.8 bar.

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Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

Section: A the Multiphase Flow Facilitymentioning

confidence: 99%

Section: B the S-shape Riser Test Sectionmentioning

confidence: 99%

See 3 more Smart Citations

Venturi Multiphase Flow Measurement based Active Slug Control

Nnabuife

Whidborne

Lao

et al. 2019

2019 25th International Conference on Automation and Computing (ICAC)

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Passive acoustic identification of bubble flow regime based on synchrosqueezing wavelet transform and deep learning

Zhang

Xing

et al. 2021

AIChE Journal

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A passive acoustic method based on synchrosqueezing wavelet transform (SWT) and deep learning was proposed to automatically identify bubble flow regimes in process industries. The method was established on the bijection relationship between bubble flow regime and the time-frequency (TF) textures of its passive acoustic emission (PAE) signals. Specifically, the PAE signal of the bubble flow was first acquired by hydrophones, then converted into TF representations (TFRs) by SWT and finally used to train convolutional neural network (CNN) to identify bubble flow regimes automatically. The effects of TF analysis method and CNN architecture were studied: the SWT represented TF textures of PAE signals the best, and its combination with ResNet gave the highest identification accuracy of 99.67%. As its main contribution, the method validated the feasibility of PAE and CNN in bubble flow regime identification, and achieved automatic identification of bubble flow regime with high accuracy and barely no subjective interference.

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Recent advancements in volumetric flow meter for industrial application

Mohindru

2023

Heat Mass Transfer

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Identification of gas-liquid flow regimes using a non-intrusive Doppler ultrasonic sensor and virtual flow regime maps

Abstract: The version in the Kent Academic Repository may differ from the final published version. Users are advised to check http://kar.kent.ac.uk for the status of the paper. Users should always cite the published version of record.

Cited by 48 publications

References 35 publications

Venturi Multiphase Flow Measurement based Active Slug Control

Venturi Multiphase Flow Measurement based Active Slug Control

Passive acoustic identification of bubble flow regime based on synchrosqueezing wavelet transform and deep learning

Recent advancements in volumetric flow meter for industrial application

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