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Model predictive inverse method for recovering boundary conditions of two-dimensional ablation
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作者 Guang-Jun Wang Ze-Hong Chen +1 位作者 Guang-Xiang Zhang Hong Chen 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第3期129-139,共11页
A model predictive inverse method (MPIM) is presented to estimate the time- and space-dependent heat flux onthe ablated boundary and the ablation velocity of the two-dimensional ablation system. For the method, first ... A model predictive inverse method (MPIM) is presented to estimate the time- and space-dependent heat flux onthe ablated boundary and the ablation velocity of the two-dimensional ablation system. For the method, first of all, therelationship between the heat flux and the temperatures of the measurement points inside the ablation material is establishedby the predictive model based on an influence relationship matrix. Meanwhile, the estimation task is formulated as aninverse heat transfer problem (IHTP) with consideration of ablation, which is described by an objective function of thetemperatures at the measurement point. Then, the rolling optimization is used to solve the IHTP to online estimate theunknown heat flux on the ablated boundary. Furthermore, the movement law of the ablated boundary is reconstructedaccording to the estimation of the boundary heat flux. The effects of the temperature measurement errors, the numberof future time steps, and the arrangement of the measurement points on the estimation results are analyzed in numericalexperiments. On the basis of the numerical results, the effectiveness of the presented method is clarified. 展开更多
关键词 ablation heat transfer model predictive inverse method(MPIM) boundary reconstruction
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Undetermined modeling methods for predicting the transition of fresh and salt water interface
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《Global Geology》 1998年第1期82-82,共1页
关键词 Undetermined modeling methods for predicting the transition of fresh and salt water interface
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