Cross-sectional void fraction distribution measurements in a vertical annulus two-phase flow by high speed X-ray computed tomography and real-time neutron radiography techniques

被引：32

作者：

Harvel, GD ^{[1
]}

Hori, K ^{[1
]}

Kawanishi, K ^{[1
]}

Chang, JS ^{[1
]}

机构：

[1] McMaster Univ, Dept Engn Phys, Hamilton, ON, Canada

来源：

FLOW MEASUREMENT AND INSTRUMENTATION | 1999年 / 10卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

two-phase flow; void distribution; X-CT; RTNR;

D O I：

10.1016/S0955-5986(99)00008-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A real-time neutron radiography (RTNR) system and a high speed X-ray computed tomography (X-CT) system are compared for measurement of two-phase flow. Each system is used to determine the flow regime, and the void fraction distribution in a vertical annulus flow channel with particular attention on the temporal resolution of the systems and the time behaviour of the two-phase how. The annulus flow channel is operated as a bubble column and measurements obtained for gas flow rates from 0.0 to 30.0 l/min. Both the RTNR and the X-CT systems show that the two-dimensional void fraction distribution can be obtained. The X-CT system is shown to have a superior temporal resolution capable of resolving the void fraction distribution in an (r,theta) plane in 4.0 ms. The RTNR system is shown to obtain void fraction distribution in a (r,z) plane in 33.0 ms. Void fraction distribution for bubbly flow and slug flow is determined. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：259 / 266

页数：8

共 19 条

[1] DETERMINATION OF GAS-LIQUID BUBBLE COLUMN INSTANTANEOUS INTERFACIAL AREA AND VOID FRACTION BY A REAL-TIME NEUTRON RADIOGRAPHY METHOD [J].