Void fraction measurement in two-phase flow processes via symbolic dynamic filtering of ultrasonic signals

被引：34

作者：

Chakraborty, Subhadeep ^{[1
]}

Keller, Eric ^{[1
]}

Talley, Justin ^{[1
]}

Srivastav, Abhishek ^{[1
]}

Ray, Asok ^{[1
]}

Kim, Seungjin ^{[1
]}

机构：

[1] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2009年 / 20卷 / 02期

关键词：

symbolic dynamics; parameter estimation; void fraction; two-phase flow; regime identification; REGIME IDENTIFICATION; NEUTRON-RADIOGRAPHY; TOMOGRAPHY; PROBE;

D O I：

10.1088/0957-0233/20/2/023001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This communication introduces a non-intrusive method for void fraction measurement and identification of two-phase flow regimes, based on ultrasonic sensing. The underlying algorithm is built upon the recently reported theory of a statistical pattern recognition method called symbolic dynamic filtering (SDF). The results of experimental validation, generated on a laboratory test apparatus, show a one-to-one correspondence between the flow measure derived from SDF and the void fraction measured by a conductivity probe. A sharp change in the slope of flow measure is found to be in agreement with a transition from fully bubbly flow to cap-bubbly flow.

引用

页数：6

共 18 条

[1] Simulation study on electron beam x-ray CT arrangements for two-phase flow measurements [J].

Bieberle, M. ;

Schleicher, E. ;

Hampel, U. .

MEASUREMENT SCIENCE AND TECHNOLOGY, 2008, 19 (09)

[2] Void fraction measurement by using the side-tube method [J].

Chien, KH ;

Chen, TT ;

Pei, BS ;

Lin, WK .

FLOW MEASUREMENT AND INSTRUMENTATION, 1997, 8 (02) :103-112

[3]

Cohen L., 1995, TIME FREQUENCY ANAL

[4] Development of the miniaturized four-sensor conductivity probe and the signal processing scheme [J].

Kim, S ;

Fu, XY ;

Wang, X ;

Ishii, M .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2000, 43 (22) :4101-4118

[5] Flow regime identification using chaotic characteristics of two-phase flow [J].

Lee, Jae Young ;

Kim, Nam Seok ;

Ishii, Mamoru .

NUCLEAR ENGINEERING AND DESIGN, 2008, 238 (04) :945-957

[6]

Mi Y., 1998, THESIS PURDUE U

[7] Visualization and measurement of two-phase flow by using neutron radiography [J].

Mishima, K ;

Hibiki, T ;

Nishihara, H .

NUCLEAR ENGINEERING AND DESIGN, 1997, 175 (1-2) :25-35

[8] Development of high-frame-rate neutron radiography and quantitative measurement method for multiphase flow research [J].

Mishima, K ;

Hibiki, T .

NUCLEAR ENGINEERING AND DESIGN, 1998, 184 (2-3) :183-201

[9] A HIGH RESOLUTION RESISTIVITY PROBE FOR DETERMINATION OF LOCAL VOID PROPERTIES IN GAS-LIQUID FLOW [J].

NEAL, LG ;

BANKOFF, SG .

AICHE JOURNAL, 1963, 9 (04) :490-494

[10] Simultaneous measurement of void fraction and fundamental bubble parameters in subcooled flow boiling [J].

Okawa, Tomio ;

Kubota, Hayato ;

Ishida, Tatsuhiro .

NUCLEAR ENGINEERING AND DESIGN, 2007, 237 (10) :1016-1024

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