Electromagnetic Inductive Flow Pattern Reconstruction by Means of Spectrum Expanding |
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| Zhang Xiao-Zhang, Wang Guo-Qiang |
- Abstract:
- In the recent years, the theory of electromagnetic flow meters is being developed to describe more complicated problems in the measurement such as multiphase flow and flow reconstruction. This paper focuses on a method for the reconstruction of flow patterns in two-dimension domain by electromagnetic flow induction.
Theoretical analysis and numerical simulation are completed based on the idea of flow pattern reconstruction by means of electromagnetic flow induction. Main concepts of the theory and reconstruction methods are summarized. A spectrum expanding method is used for flow pattern reconstruction in two-dimensional domain. General expressions for the weight function W and flow velocity distribution V are obtained by series expansion. Examples of the weight function in the case of 4 pairs of electrodes and 2 pairs of magnetic coils, and some flow velocity distributions are studied. Matrix A and signal vector S are worked out. Some cases of symmetrical and asymmetrical flows are reconstructed using the software of MATLAB. The results are showed and discussed. - Keywords:
- Electromagnetic-induction, weight function, flow pattern reconstruction, spectrum expanding, numerical simulation
- Download:
- IMEKO-TC9-2004-057.pdf
- DOI:
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