Development of a subchannel void sensor and two-phase flow measurement in 10×10 rod bundle

Takahiro Arai, Masahiro Furuya, Taizo Kanai, Kenetsu Shirakawa

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

An accurate and detailed experimental database is crucial for modeling the multidimensional two-phase flow and for validating the numerical calculation results. In particular, a two-phase flow in the rod bundle flow channel is so complicated that it is difficult to measure a multidimensional flow structure. Based on the available reference, a point-measurement sensor for acquiring void fractions and bubble velocity distributions do not infer interactions of the subchannel flow dynamics, such as a cross flow and flow distribution, etc. In order to acquire multidimensional two-phase flow in a 10 × 10 rod bundle with an o.d. of 10. mm and length of 3110. mm, a new sensor consisting of 11 × 11 wire and 10 × 10 rod electrodes was developed. The electrical potential in the proximity region between the two wires creates a void fraction in the central subchannel, like a so-called wire-mesh sensor. A unique feature of the devised sensor is that the void fraction near the rod surface can be estimated from the electrical potential in the proximity region between one wire and one rod, meaning the additional 400 points of void fraction and phasic velocity in the 10 × 10 rod bundle can be acquired. The devised sensor demonstrates multidimensional flow structures, i.e. void fraction, phasic velocity, sauter mean diameter and interfacial area concentration distributions. Acquired data exhibit complexity of two-phase flow dynamics in a rod bundle flow channel, such as coalescence and the breakup of bubbles in transient phasic velocity distributions.

Original languageEnglish
Pages (from-to)183-192
Number of pages10
JournalInternational Journal of Multiphase Flow
Volume47
DOIs
Publication statusPublished - 2012 Dec 1
Externally publishedYes

Fingerprint

Phase measurement
Void fraction
flow measurement
Flow measurement
two phase flow
Two phase flow
bundles
voids
rods
Wire
sensors
Sensors
Channel flow
Flow structure
Velocity distribution
wire
channel flow
proximity
bubbles
velocity distribution

Keywords

  • Air-water two-phase flow
  • Bubble chord length
  • Interfacial area concentration
  • Phasic velocity
  • Rod bundle
  • Subchannel void sensor
  • Void fraction

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

Cite this

Development of a subchannel void sensor and two-phase flow measurement in 10×10 rod bundle. / Arai, Takahiro; Furuya, Masahiro; Kanai, Taizo; Shirakawa, Kenetsu.

In: International Journal of Multiphase Flow, Vol. 47, 01.12.2012, p. 183-192.

Research output: Contribution to journalArticle

@article{69340c46354d4e3595a215596990c792,
title = "Development of a subchannel void sensor and two-phase flow measurement in 10×10 rod bundle",
abstract = "An accurate and detailed experimental database is crucial for modeling the multidimensional two-phase flow and for validating the numerical calculation results. In particular, a two-phase flow in the rod bundle flow channel is so complicated that it is difficult to measure a multidimensional flow structure. Based on the available reference, a point-measurement sensor for acquiring void fractions and bubble velocity distributions do not infer interactions of the subchannel flow dynamics, such as a cross flow and flow distribution, etc. In order to acquire multidimensional two-phase flow in a 10 × 10 rod bundle with an o.d. of 10. mm and length of 3110. mm, a new sensor consisting of 11 × 11 wire and 10 × 10 rod electrodes was developed. The electrical potential in the proximity region between the two wires creates a void fraction in the central subchannel, like a so-called wire-mesh sensor. A unique feature of the devised sensor is that the void fraction near the rod surface can be estimated from the electrical potential in the proximity region between one wire and one rod, meaning the additional 400 points of void fraction and phasic velocity in the 10 × 10 rod bundle can be acquired. The devised sensor demonstrates multidimensional flow structures, i.e. void fraction, phasic velocity, sauter mean diameter and interfacial area concentration distributions. Acquired data exhibit complexity of two-phase flow dynamics in a rod bundle flow channel, such as coalescence and the breakup of bubbles in transient phasic velocity distributions.",
keywords = "Air-water two-phase flow, Bubble chord length, Interfacial area concentration, Phasic velocity, Rod bundle, Subchannel void sensor, Void fraction",
author = "Takahiro Arai and Masahiro Furuya and Taizo Kanai and Kenetsu Shirakawa",
year = "2012",
month = "12",
day = "1",
doi = "10.1016/j.ijmultiphaseflow.2012.07.012",
language = "English",
volume = "47",
pages = "183--192",
journal = "International Journal of Multiphase Flow",
issn = "0301-9322",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Development of a subchannel void sensor and two-phase flow measurement in 10×10 rod bundle

AU - Arai, Takahiro

AU - Furuya, Masahiro

AU - Kanai, Taizo

AU - Shirakawa, Kenetsu

PY - 2012/12/1

Y1 - 2012/12/1

N2 - An accurate and detailed experimental database is crucial for modeling the multidimensional two-phase flow and for validating the numerical calculation results. In particular, a two-phase flow in the rod bundle flow channel is so complicated that it is difficult to measure a multidimensional flow structure. Based on the available reference, a point-measurement sensor for acquiring void fractions and bubble velocity distributions do not infer interactions of the subchannel flow dynamics, such as a cross flow and flow distribution, etc. In order to acquire multidimensional two-phase flow in a 10 × 10 rod bundle with an o.d. of 10. mm and length of 3110. mm, a new sensor consisting of 11 × 11 wire and 10 × 10 rod electrodes was developed. The electrical potential in the proximity region between the two wires creates a void fraction in the central subchannel, like a so-called wire-mesh sensor. A unique feature of the devised sensor is that the void fraction near the rod surface can be estimated from the electrical potential in the proximity region between one wire and one rod, meaning the additional 400 points of void fraction and phasic velocity in the 10 × 10 rod bundle can be acquired. The devised sensor demonstrates multidimensional flow structures, i.e. void fraction, phasic velocity, sauter mean diameter and interfacial area concentration distributions. Acquired data exhibit complexity of two-phase flow dynamics in a rod bundle flow channel, such as coalescence and the breakup of bubbles in transient phasic velocity distributions.

AB - An accurate and detailed experimental database is crucial for modeling the multidimensional two-phase flow and for validating the numerical calculation results. In particular, a two-phase flow in the rod bundle flow channel is so complicated that it is difficult to measure a multidimensional flow structure. Based on the available reference, a point-measurement sensor for acquiring void fractions and bubble velocity distributions do not infer interactions of the subchannel flow dynamics, such as a cross flow and flow distribution, etc. In order to acquire multidimensional two-phase flow in a 10 × 10 rod bundle with an o.d. of 10. mm and length of 3110. mm, a new sensor consisting of 11 × 11 wire and 10 × 10 rod electrodes was developed. The electrical potential in the proximity region between the two wires creates a void fraction in the central subchannel, like a so-called wire-mesh sensor. A unique feature of the devised sensor is that the void fraction near the rod surface can be estimated from the electrical potential in the proximity region between one wire and one rod, meaning the additional 400 points of void fraction and phasic velocity in the 10 × 10 rod bundle can be acquired. The devised sensor demonstrates multidimensional flow structures, i.e. void fraction, phasic velocity, sauter mean diameter and interfacial area concentration distributions. Acquired data exhibit complexity of two-phase flow dynamics in a rod bundle flow channel, such as coalescence and the breakup of bubbles in transient phasic velocity distributions.

KW - Air-water two-phase flow

KW - Bubble chord length

KW - Interfacial area concentration

KW - Phasic velocity

KW - Rod bundle

KW - Subchannel void sensor

KW - Void fraction

UR - http://www.scopus.com/inward/record.url?scp=84865319237&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865319237&partnerID=8YFLogxK

U2 - 10.1016/j.ijmultiphaseflow.2012.07.012

DO - 10.1016/j.ijmultiphaseflow.2012.07.012

M3 - Article

AN - SCOPUS:84865319237

VL - 47

SP - 183

EP - 192

JO - International Journal of Multiphase Flow

JF - International Journal of Multiphase Flow

SN - 0301-9322

ER -