Application of the phase method in radioisotope measurements of the liquid - solid particles flow in the vertical pipeline

被引：8

作者：

Hanus, Robert ^{[1
]}

Zych, Marcin ^{[2
]}

Petryka, Leszek ^{[2
]}

Mosorov, Volodymyr ^{[3
]}

Hanus, Pawel ^{[2
]}

机构：

[1] Rzeszow Univ Technol, PL-35959 Rzeszow, Poland

[2] AGH Univ Sci & Technol, PL-30059 Krakow, Poland

[3] Lodz Univ Technol, PL-90924 Lodz, Poland

来源：

EFM14 - EXPERIMENTAL FLUID MECHANICS 2014 | 2015年 / 92卷

关键词：

TIME-DELAY ESTIMATION; CROSS-CORRELATION FUNCTION; HILBERT TRANSFORM; 2-PHASE FLOW; SIGNAL; ABSORPTION;

D O I：

10.1051/epjconf/20159202020

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The paper presents idea and an application of the gamma-absorption method to a two-phase flow investigation in a vertical pipeline, where the flow of solid particles transported by water was examined by a set of two Am-241 radioactive sources and probes with NaI(Tl) scintillation crystals. In the described experiments as solid phase the ceramic models representing natural polymetallic ocean nodules were used. For advanced analysis of electrical signals obtained from detectors the phase of cross-spectral density function has been applied. Results of the average solid-phase velocity measurements were compared with one obtained by application of the classical cross-correlation. It was found that the combined uncertainties of the velocity of solid particles evaluation in the presented experiment did not exceed 0.6% in phase method and 3.2% in cross-correlation method.

引用

页数：5

共 28 条

[1]

[Anonymous], MINERAL RESOURCES SE

[2]

[Anonymous], 1995, GUID EXPR UNC MEAS

[3]

[Anonymous], P 10 ISOPE OC MIN GA

[4] Estimation of volume fractions and flow regime identification in multiphase flow based on gamma measurements and multivariate calibration [J].