Zernike Ultrasonic Tomography for Fluid Velocity Imaging Based on Pipeline Intrusive Time-of-Flight Measurements

被引:9
|
作者
Besic, Nikola [1 ,2 ]
Vasile, Gabriel [1 ]
Anghel, Andrei [1 ,4 ]
Petrut, Teodor-Ion [1 ]
Ioana, Cornel [1 ]
Stankovic, Srdjan [3 ]
Girard, Alexandre [5 ]
d'Urso, Guy [5 ]
机构
[1] CNRS Grenoble INP, GIPSA lab, Grenoble, France
[2] Univ Montenegro, Podgorica, Montenegro
[3] Univ Montenegro, Fac Elect Engn, Podgorica, Montenegro
[4] Univ Politehn, Fac Elect Telecommun & Informat Technol, Bucharest, Romania
[5] EDF, R&D, Chatou, France
关键词
FLOW METER; WAVE-PROPAGATION;
D O I
10.1109/TUFFC.2014.006515
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
In this paper, we propose a novel ultrasonic tomography method for pipeline flow field imaging, based on the Zernike polynomial series. Having intrusive multipath time-of-flight ultrasonic measurements (difference in flight time and speed of ultrasound) at the input, we provide at the output tomograms of the fluid velocity components (axial, radial, and orthoradial velocity). Principally, by representing these velocities as Zernike polynomial series, we reduce the tomography problem to an ill-posed problem of finding the coefficients of the series, relying on the acquired ultrasonic measurements. Thereupon, this problem is treated by applying and comparing Tikhonov regularization and quadratically constrained l 1 minimization. To enhance the comparative analysis, we additionally introduce sparsity, by employing SVD-based filtering in selecting Zernike polynomials which are to be included in the series. The first approach-Tikhonov regularization without filtering, is used because it is the most suitable method. The performances are quantitatively tested by considering a residual norm and by estimating the flow using the axial velocity tomogram. Finally, the obtained results show the relative residual norm and the error in flow estimation, respectively, similar to 0.3% and similar to 1.6% for the less turbulent flow and similar to 0.5% and similar to 1.8% for the turbulent flow. Additionally, a qualitative validation is performed by proximate matching of the derived tomograms with a flow physical model.
引用
收藏
页码:1846 / 1855
页数:10
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