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• W2091400314 abstract "Two-phase flows widely exist in many industries. Measuring the phase distribution in two-phase flow is important for the optimization and control of some industrial processes. Electrical resistance tomography (ERT) is a promising non-intrusive visualization technique for monitoring the two-phase flow. However, due to its nonlinear and ill-posed character, high-quality image reconstruction is difficult and some iterative approach is time consuming. In this paper, a boundary element approach is presented for directly estimating the free-surface in two-phase flow using ERT. The unknown free surface is parameterized by a Bezier curve. Coefficients of its control points are estimated by minimizing a residual function using the iterative Levenberg–Marquardt method. To speed up the estimation process, the physical model of ERT is formulated using a boundary element method. Based on this formulation, the forward problem is fast solved through a small size system matrix and the Jacobian matrix is efficiently calculated using an analytic method. After several numerical experiments, this approach is proved fast and precise and several factors influencing the estimation quality are analyzed based on these simulations." @default.
• W2091400314 created "2016-06-24" @default.
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• W2091400314 date "2012-08-01" @default.
• W2091400314 modified "2023-09-22" @default.
• W2091400314 title "A boundary element approach to estimate the free surface in stratified two-phase flow" @default.
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• W2091400314 doi "https://doi.org/10.1088/0957-0233/23/10/105401" @default.
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