The electrical tomography can be utilized to calculate the solid concentration or gas holdup in aqueous based multiphase flows. However, there usually exists a strong nonlinear relationship between the solid concentration and tomographic image. Is there any effective way to handle this problem?
Dear Ziqiang Cui,
Within the classical framework, one can minimize the error between measurements and calculated values, in function of the multiphase electrical properties. There are different optimization algorithms which deal with non-linearity, with the most popular being Gauss-Newton, Simulated Annealing and Kalman filtering. Of these three, Simulated Annealing requires a large processing time and Kalman filtering may be suitable for real time (depending on other aspects).
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