Methodological improvement of an intrusive four-sensor probe for the multi-dimensional two-phase flow measurement

Shen, Xiuzhong; Saitō, Yasushi; Mishima, Kaichiro; Nakamura, Hideo

doi:10.1016/j.ijmultiphaseflow.2005.02.003

Cited by 70 publications

(37 citation statements)

References 10 publications

(17 reference statements)

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“…The existing literature for needle probe sensors (Kataoka et al, 1986;Kataoka and Serizawa, 1990;Revankar and Ishii, 1992;Kalkach-Navarro et al, 1993;Cartellier, 1999;Dias et al, 2000;Fu, 2001;Wu et al, 2001;Kim et al, 2001;Euh et al, 2001;Shen et al, 2005;Pradhan et al, 2013) is employed to measure the local two-phase flow parameters in the present work. The four-sensor conductivity probe design used in the present experiments is based in the previous work of (Kim et al, 2001) and consisted of 4 enamelled copper wires (0.2 mm outer diameter).…”

Section: Four-sensor Probe Methodologymentioning

confidence: 99%

“…From the pioneer work of (Kataoka et al, 1986) on the local interfacial area derivation from velocity measurements, (Kim et al, 2001) proposed a miniaturized probe and made it capable of measuring both large and small bubbles. (Shen et al, 2005) and (Shen and Nakamura, 2013) proposed an explicit equation for the instantaneous local interfacial area and local interfacial velocity using four sensor conductivity probes, which take into account both receding and oncoming interfaces. Then, local values of IAC can be calculated as:…”

Section: C) Interfacial Area Concentrationmentioning

confidence: 99%

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Local parameters of air–water two-phase flow at a vertical T-junction

Monrós-Andreu

Martínez‐Cuenca

Torró

et al. 2017

Nuclear Engineering and Design

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Significant experimental work and modeling about vertical T-junction as a phase separator has been done for churn and annular flows, but a survey on the literature reveals a lack of experimental data regarding bubbly flow nor any phenomenological explanation to their behavior. The objective of this work is to extend the understanding of these junctions by obtaining complete datasets, i.e. of both gas and liquid, of the phase splitting process in bubbly flow conditions by means of conductivity needle probes, Laser Doppler anemometry and visual inspection. Measurements and observations of the phase split, as well as the vortex structure in a vertical T-junction with equal pipe diameters (52 mm inner diameter), are reported. Results suggest a relationship between the vortex structure and the efficiency of the junction as phase separator.

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Section: Four-sensor Probe Methodologymentioning

confidence: 99%

Section: C) Interfacial Area Concentrationmentioning

confidence: 99%

Local parameters of air–water two-phase flow at a vertical T-junction

Monrós-Andreu

Martínez‐Cuenca

Torró

et al. 2017

Nuclear Engineering and Design

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“…In order to further verify the accuracy of the void fraction measurements by the differential pressure gauges, we compared them with local void fraction measurements by the optical multi-sensor probe method (Shen et al, 2005b, 2008a, 2008band Shen and Nakamura, 2013 and the X-type hot-film probe method (Bruun, 1995). The measurement errors in both comparisons are within ±10%.…”

Section: Experimental Conditions and Measurement Verificationmentioning

confidence: 99%

Bubbly-to-cap bubbly flow transition in a long-26m vertical large diameter pipe at low liquid flow rate

Shen

Hibiki

Nakamura

2015

International Journal of Heat and Fluid Flow

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“…a flat-tip type probe [33,34] was used to measure the bubble diameter profiles along the diagonal, x-bisector and x-wall-nearest line (see Figure 3) in the same two-phase flow conditions at z/D H = 16.1. The optical probe was traversed by the same traversing device as the hot-film anemometry.…”

Section: Experimental Apparatusmentioning

confidence: 99%

Upward air–water bubbly flow characteristics in a vertical square duct

Sun

Kunugi

Shen

et al. 2013

Journal of Nuclear Science and Technology

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In nuclear engineering fields, gas-liquid bubbly flows exist in channels with various shape and size crosssections. Although many experiments have been carried out especially in circular pipes, those in a noncircular duct are very limited. To contribute to the development of gas-liquid bubbly flow model for a noncircular duct, detail measurements for the air-water bubbly flow in a square duct (side length: 0.136 m) were carried out by an X-type hot-film anemometry and a multi-sensor optical probe. Local flow parameters of the void fraction, bubble diameter, bubble frequency, axial liquid velocity and turbulent kinetic energy were measured in 11 two-phase flow conditions. These flow conditions covered bubbly flow with the area-averaged void fraction ranging from 0.069 to 0.172. A pronounced corner peak of the void fraction was observed in a quarter square area of a measuring cross-section. Due to a high bubble concentration in the corner, the maximum values of both axial liquid velocity and turbulent kinetic energy intensity were located in the corner region. It was pointed out that an effect of the corner on accumulating bubble in the corner region changed the distributions of axial liquid velocity and turbulent kinetic energy intensity significantly.

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Methodological improvement of an intrusive four-sensor probe for the multi-dimensional two-phase flow measurement

Cited by 70 publications

References 10 publications

Local parameters of air–water two-phase flow at a vertical T-junction

Local parameters of air–water two-phase flow at a vertical T-junction

Bubbly-to-cap bubbly flow transition in a long-26m vertical large diameter pipe at low liquid flow rate

Upward air–water bubbly flow characteristics in a vertical square duct

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