Three-dimensional phasic velocity determination methods with wire-mesh sensor

被引:21
作者
Kanai, T. [1 ]
Furuya, M. [1 ]
Arai, T. [1 ]
Shirakawa, K. [1 ]
Nishi, Y. [1 ]
机构
[1] Cent Res Inst Elect Power Ind, Komae, Tokyo, Japan
关键词
Wire-mesh sensor; Three-dimensional velocity vector; Air-water two-phase flow; Swirl flow; Wavelet analysis; Cross-correlation analysis; 2-PHASE FLOW; TRANSIENT;
D O I
10.1016/j.ijmultiphaseflow.2012.06.006
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A gas-liquid two-phase flow in a large diameter pipe exhibits a three-dimensional flow structure. The wire-mesh sensor (WMS) can acquire a quasi-three-dimensional void fraction distribution. Furthermore, the WMS can acquire a phasic-velocity distribution on the basis of the time lag of void signals between both sets of WMS. Previously, the acquired phasic velocity was one-dimensional distributions. The authors propose a method to estimate the three-dimensional phasic-velocity distribution from the same WMS data. A three dimensional velocity vector was determined on the basis of cross-correlation analysis. The flow direction is determined by the WMS measuring-point combination, whereby the cross-correlation coefficient between both sets of WMS measuring points reveals the peak. In addition, the flow structure can be extracted by size on the basis of a wavelet analysis. The proposed method was applied for two sets of 64 x 64 mesh sensors in an air-water flow in a vertical pipe with inner diameter of 224 mm. The proposed method can successfully visualize a swirl flow structure where large and small bubbles tend to move respectively in inward and outward directions in turn. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:75 / 86
页数:12
相关论文
共 16 条
[1]  
Aritomi M., 2000, 4 WORKSH MEAS TECHN
[2]  
DAUBECHIES I, 1992, CBMS NSF REGIONAL C, V61
[3]   Local two-phase flow measurements using sensor techniques [J].
Hogsett, S ;
Ishii, M .
NUCLEAR ENGINEERING AND DESIGN, 1997, 175 (1-2) :15-24
[4]  
Kanai T., 2011, P ICAPP 2011 NIC FRA, P11291
[5]  
KIRPALANI DM, 2001, P 4 INT C MULT FLOW
[6]  
Li T., 2002, ACM SIGKDD Explorations Newsletter, V4, P49, DOI DOI 10.1145/772862.772870
[7]   Three-dimensional flow pattern visualization and bubble size distributions in stationary and transient upward flashing flow [J].
Manera, A. ;
Prasser, H. -M. ;
Lucas, D. ;
van der Hagen, T. H. J. J. .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2006, 32 (08) :996-1016
[8]   Experimental investigation on bubble turbulent diffusion in a vertical large-diameter pipe by wire-mesh sensors and correlation techniques [J].
Manera, Annalisa ;
Prasser, Horst-Michael ;
Lucas, Dirk .
NUCLEAR TECHNOLOGY, 2007, 158 (02) :275-290
[9]   An application of the wavelet analysis technique for the objective discrimination of two-phase flow patterns [J].
Nguyen, Van Thai ;
Euh, Dong Jin ;
Song, Chul-Hwa .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2010, 36 (09) :755-768
[10]  
Prasser H.-M., 2002, P INT C ADV NUCL POW