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http://dx.doi.org/10.3795/KSME-B.2004.28.10.1271

Measurement of velocity Pronto in Liquid Metal Flow Using Electromagnetic Tomography  

Ahn Yeh-Chan (포항공과대학교 대학원 기계공학과)
Kim Moo Hwan (포항공과대학교 기계공학과)
Choi Sang-Ho (한국항공우주연구원 열공력그룹)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.10, 2004 , pp. 1271-1278 More about this Journal
Abstract
In order to measure non-intrusively velocity profile in liquid metal flow, a modified electromagnetic flowmeter was designed, which was based on electromagnetic tomography technique. Under the assumption that flow is fully-developed, axisymmetric and rectilinear, the velocity profile was reconstructed after the flowmeter equation, the first kind of Fredholm integration equation, was linearized. In reconstruction process Tikhonov regularization method with regularization parameter was used. The reconstructed velocity profile had the nearly same as turbulent flow profile which was approximately represented as log law. In addition, flowmeter output fur a fixed magnet rotation angle was linearly proportional to flow rate. When magnet rotation angle was 54$^{\circ}$, axisymmetric weight function was nearly uniform so that the flowmeter gives a constant signal for any fully-developed, axisymmetric and rectilinear profile with a constant flow rate.
Keywords
Electromagnetic flowmeter; Velocity Profile; Tomography; Liquid Metal flow;
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Times Cited By KSCI : 1  (Citation Analysis)
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