کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4967264 1449367 2017 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sequential data assimilation with multiple nonlinear models and applications to subsurface flow
ترجمه فارسی عنوان
با استفاده از چندین مدل غیرخطی و برنامه های کاربردی به جریان زیرزمینی تقسیم داده های متوالی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
Complex systems are often described with competing models. Such divergence of interpretation on the system may stem from model fidelity, mathematical simplicity, and more generally, our limited knowledge of the underlying processes. Meanwhile, available but limited observations of system state could further complicate one's prediction choices. Over the years, data assimilation techniques, such as the Kalman filter, have become essential tools for improved system estimation by incorporating both models forecast and measurement; but its potential to mitigate the impacts of aforementioned model-form uncertainty has yet to be developed. Based on an earlier study of Multi-model Kalman filter, we propose a novel framework to assimilate multiple models with observation data for nonlinear systems, using extended Kalman filter, ensemble Kalman filter and particle filter, respectively. Through numerical examples of subsurface flow, we demonstrate that the new assimilation framework provides an effective and improved forecast of system behavior.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 346, 1 October 2017, Pages 356-368
نویسندگان
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