Multi-range sensors for the measurement of liquid film thickness distributions based on electrical conductance

Tiwari, Rashmita; Damsohn, Manuel; Prasser, Horst-Michael; Wymann, Daniel; Gossweiler, Christoph

doi:10.1016/j.flowmeasinst.2014.09.002

Cited by 29 publications

(9 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Geometry 2 was proposed for nondestructive evaluation (NDE) of materials (Chen, 2012). Geometries 4 (Da Silva et al, 2007) and 5 (Tiwari et al, 2014) Damsohn and Prasser ( 2009) were designed and tested for water film thickness in gas-water flow and oil-water mixtures, respectively.…”

Section: Simulation Setupmentioning

confidence: 99%

High spatial and temporal resolution film thickness planar sensor: comparison of geometries

Riaño

Peña

Rodriguez

et al. 2019

View full text Add to dashboard Cite

Purpose The purpose of this paper is to study planar sensor geometries for the measurement of film thickness in a viscous oil–water flow. The study is relevant due to there are only a few measurement techniques for oil-water flow and these techniques involve oil with low viscosity (close to the water viscosity). Specifically, some techniques have been used in the studies of annular flow (gas–liquid and liquid–liquid flows), but applications in other flow patterns were not encountered. Design/methodology/approach Different sensor geometries were numerically simulated to compare their characteristics and choose the best to measure the water film thickness in the oil–water flow through an impedance-based technique. Finite element method was used for resolving the tridimensional electric field over each sensor. The compared characteristics were the penetration depth, the sensitivity, the minimum spatial resolution (high spatial resolution) and the quasi-linear curve. Findings The best geometry tested has a spatial resolution of 2 × 2 mm, a penetration depth of 700 µm and a quasi-linear response in the measuring range. This geometry was tested by means of conductance and capacitance static experiments. From these experiments, it could be determined that conductance and the capacitance systems are promising for measuring water film thickness in an oil–water flow. Originality/value Several measurement techniques such as micro-PIV, planar laser-induced fluorescence and planar conductive or capacitive sensors that are supposed to be adaptable to the liquid–liquid flow have been proposed recently. Micro-PIV and planar-induced fluorescence need transparent pipes and fluids. On the other hand, conductive or capacitive methods have been only applied to low viscosity fluids. In that context, this paper proposes to study a new technique for non-intrusive measurement of the liquid-liquid flow. The main goal is the validation of the new planar sensor as a reference tool for the development of instrumentation for oilfield application.

show abstract

Section: Simulation Setupmentioning

confidence: 99%

High spatial and temporal resolution film thickness planar sensor: comparison of geometries

Riaño

Peña

Rodriguez

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The conductance sensor uses the water conductivity to obtain the thickness value of the liquid film [ 33 , 34 ]. It consists of three electrodes mounted flush to the wall, aligned in the same flow direction of the liquid film and gas flow.…”

Section: Conductance Probes For Annular Flowmentioning

confidence: 99%

Development of Conductivity Sensors for Multi-Phase Flow Local Measurements at the Polytechnic University of Valencia (UPV) and University Jaume I of Castellon (UJI)

Muñoz-Cobo

Chiva

Mendez

et al. 2017

Sensors

View full text Add to dashboard Cite

This paper describes all the procedures and methods currently used at UPV (Universitat Politécnica de Valencia) and UJI (University Jaume I) for the development and use of sensors for multi-phase flow analysis in vertical pipes. This paper also describes the methods that we use to obtain the values of the two-phase flow magnitudes from the sensor signals and the validation and cross-verification methods developed to check the consistency of the results obtained for these magnitudes with the sensors. First, we provide information about the procedures used to build the multi-sensor conductivity probes and some of the tests performed with different materials to avoid sensor degradation issues. In addition, we provide information about the characteristics of the electric circuits that feed the sensors. Then the data acquisition of the conductivity probe, the signal conditioning and the data processing including the device that have been designed to automatize all the measurement process of moving the sensors inside the channels by means of stepper electric motors controlled by computer are shown in operation. Then, we explain the methods used for bubble identification and categorization. Finally, we describe the methodology used to obtain the two-phase flow information from the sensor signals. This includes the following items: void fraction, gas velocity, Sauter mean diameter and interfacial area concentration. The last part of this paper is devoted to the conductance probes developed for the annular flow analysis, which includes the analysis of the interfacial waves produced in annular flow and that requires a different type of sensor.

show abstract

“…The measurement of gas-liquid two-phase flows in a small diameter pipe using a dualsensor multi-electrode conductance probe investigate the flow pattern transition encountered in gasliquid two-phase flows. Tiwari et al [17] pointed out that the effective measurement range of the conductive sensor is dependent on its shape and spatial geometry, and proposed a new sensor composed of a matrix of electrical conducting pads to reach the high spatial resolution and multi-range measurement of the liquid film thickness. Pirouzpanah et al [18] developed a high-speed multi-frequency impedance sensor to study the hysteresis effects and emulsion properties in water cut measurement of oil-water two-phase flows.…”

Section: Measurement Science and Technologymentioning

confidence: 99%

The measurement of gas–liquid two-phase flows in a small diameter pipe using a dual-sensor multi-electrode conductance probe

Zhai¹,

Bian²,

Han³

et al. 2016

Meas. Sci. Technol.

View full text Add to dashboard Cite

We design a dual-sensor multi-electrode conductance probe to measure the flow parameters of gas–liquid two-phase flows in a vertical pipe with an inner diameter of 20 mm. The designed conductance probe consists of a phase volume fraction sensor (PVFS) and a cross-correlation velocity sensor (CCVS). Through inserting an insulated flow deflector in the central part of the pipe, the gas–liquid two-phase flows are forced to pass through an annual space. The multiple electrodes of the PVFS and the CCVS are flush-mounted on the inside of the pipe wall and the outside of the flow deflector, respectively. The geometry dimension of the PVFS is optimized based on the distribution characteristics of the sensor sensitivity field. In the flow loop test of vertical upward gas–liquid two-phase flows, the output signals from the dual-sensor multi-electrode conductance probe are collected by a data acquisition device from the National Instruments (NI) Corporation. The information transferring characteristics of local flow structures in the annular space are investigated using the transfer entropy theory. Additionally, the kinematic wave velocity is measured based on the drift velocity model to investigate the propagation behavior of the stable kinematic wave in the annular space. Finally, according to the motion characteristics of the gas–liquid two-phase flows, the drift velocity model based on the flow patterns is constructed to measure the individual phase flow rate with higher accuracy.

show abstract

Multi-range sensors for the measurement of liquid film thickness distributions based on electrical conductance

Cited by 29 publications

References 21 publications

High spatial and temporal resolution film thickness planar sensor: comparison of geometries

High spatial and temporal resolution film thickness planar sensor: comparison of geometries

Development of Conductivity Sensors for Multi-Phase Flow Local Measurements at the Polytechnic University of Valencia (UPV) and University Jaume I of Castellon (UJI)

The measurement of gas–liquid two-phase flows in a small diameter pipe using a dual-sensor multi-electrode conductance probe

Contact Info

Product

Resources

About