F<scp>LOW</scp>-R<scp>ATE</scp> M<scp>EASUREMENT IN</scp> T<scp>WO</scp>-P<scp>HASE</scp> F<scp>LOW</scp>

Oddie, Gary; Pearson, J. R. A.

doi:10.1146/annurev.fluid.36.050802.121935

Cited by 60 publications

(21 citation statements)

References 23 publications

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“…This leads to a desynchronization of departures and depths of liquid penetration inside the nozzle. This study can help to reveal the complex dynamics of multiphase flow from the experimental data [40]. The results could be important for applications in microchannel technology [41].…”

Section: Discussionmentioning

confidence: 80%

The loss of synchronization between air pressure fluctuations and liquid flow inside the nozzle during the chaotic bubble departures

2016

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The paper investigates the dynamics of bubble departures from a glass nozzle submerged in a tank filled with distilled water. Air pressure and liquid flow inside the nozzle are simultaneously recorded using a data acquisition system and a high speed camera. The recurrence plot and cross recurrence plot methods are used to identify the loss of synchronization between air pressure fluctuations and the depth of liquid flow inside the nozzle during chaotic bubble departures. We claim that the synchronization between pressure fluctuations and the depth of liquid penetration inside the nozzle is suppressed during chaotic bubble departures. The experimental results show agreement with the numerical findings. The results demonstrate that the non-linearities of processes occurring during liquid penetration inside the nozzle have a significant impact on the synchronization between the time histories of pressure and the corresponding depths of liquid penetration inside the nozzle.

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Section: Discussionmentioning

confidence: 80%

The loss of synchronization between air pressure fluctuations and liquid flow inside the nozzle during the chaotic bubble departures

2016

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“…Flowrate measurement of gas-liquid two-phase flow is of great importance in many industries such as chemical, petroleum, energy, and power engineering [1][2][3]. Although significant progress has been made in developing methods for two-phase flow measurement, many issues remain to be resolved because of the inherent complexity of two-phase flow [1,2].…”

Section: Introductionmentioning

confidence: 99%

Air–water two-phase flow measurement using a Venturi meter and an electrical resistance tomography sensor

Meng

Huang

Wang

et al. 2010

Flow Measurement and Instrumentation

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“…Conventional approaches to flow metering of multiphase flows are such that an individual phase needs to be sufficiently separated for the metering device to be effective. Alternatively, homogeneous mixing allows the devices to approximate the flow rate [20]. However, such phase-control operations require a change in pipeline systems and invariably experiences a significant pressure loss.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound Flow-Monitoring and Flow-Metering of Air–Oil–Water Three-Layer Pipe Flows

et al. 2017

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The combined use of ultrasound pulse-echo intensity and Doppler shift frequency is examined as a means to measure strong unsteady three-phase pipe flows of a gas and two liquids. With air, oil, and water as components of the fluid media, particular attention is given to analyze ultrasound responses at the air-oil and oil-water interfaces. Reciprocating slugging is generated inside a 55-mm-diameter circular pipe, of which edges oscillate vertically at a controlled frequency. We use an ultrasound velocity profiler to obtain the 1-D cross-sectional distributions of the instantaneous flow velocity at the sampling rate of 60 Hz. All the measurements are realized by a single ultrasound transducer located outside the pipe. Measurement accuracy is validated using a high-speed camera coupled with particle image velocimetry that is synchronized with the profiler. The results demonstrate that the proposed technique works properly in sensing both interfaces as well as in-phase flow velocity distributions. In addition, multiphase volume flow rates for the constituents are obtained by velocity profile integration assuming vertical phase stratification in an approximation.INDEX TERMS Doppler method, flow metering, multiphase flow, particle image velocimetry, pipe flow, pipe line, ultrasound

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FLOW-RATE MEASUREMENT IN TWO-PHASE FLOW

Cited by 60 publications

References 23 publications

The loss of synchronization between air pressure fluctuations and liquid flow inside the nozzle during the chaotic bubble departures

The loss of synchronization between air pressure fluctuations and liquid flow inside the nozzle during the chaotic bubble departures

Air–water two-phase flow measurement using a Venturi meter and an electrical resistance tomography sensor

Ultrasound Flow-Monitoring and Flow-Metering of Air–Oil–Water Three-Layer Pipe Flows

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