In this paper, we present the estimation analysis of flow field in wave tank based on the ensemble Kalman filter FEM. The ensemble Kalman filter FEM is the fusion method of the ensemble Kalman filter theory and the FEM, and the characteristic of this method is the estimation of flow field can be carried out considering the observed physical variables. In this study, the observed water elevation is utilized for the flow estimation analysis. As the governing equation, the shallow water equation is introduced, and the “Stream Upwind Petrov Gelerkin method” (“SUPG method”) is employed to discretize the governing equation.
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