Data-driven reduced order modeling of environmental hydrodynamics using deep autoencoders and neural ODEs
Data-driven reduced order modeling of environmental hydrodynamics using deep autoencoders and neural ODEs
复制标题
使用深度自动编码器和神经常微分方程进行数据驱动的环境流体动力学降阶建模
DOI:
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发表时间:
2021
期刊:
影响因子:
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通讯作者:
M. Putti
中科院分区:
文献类型:
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作者:
S. Dutta;Peter Rivera;Orie M. Cecil;M. Farthing;E. Perracchione;M. Putti
Model reduction for fluid flow simulation continues to be of great interest across a number of scientific and engineering fields. In a previous work [arXiv:2104.13962], we explored the use of Neural Ordinary Differential Equations (NODE) as a non-intrusive method for propagating the latent-space dynamics in reduced order models. Here, we investigate employing deep autoencoders for discovering the reduced basis representation, the dynamics of which are then approximated by NODE. The ability of deep autoencoders to represent the latent-space is compared to the traditional proper orthogonal decomposition (POD) approach, again in conjunction with NODE for capturing the dynamics. Additionally, we compare their behavior with two classical non-intrusive methods based on POD and radial basis function interpolation as well as dynamic mode decomposition. The test problems we consider include incompressible flow around a cylinder as well as a real-world application of shallow water hydrodynamics in an estuarine system. Our findings indicate that deep autoencoders can leverage nonlinear manifold learning to achieve a highly efficient compression of spatial information and define a latent-space that appears to be more suitable for capturing the temporal dynamics through the NODE framework.
DOI:
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发表时间:
2021-04
期刊:
ArXiv
影响因子:
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作者:
S. Dutta;Peter Rivera-Casillas;M. Farthing
通讯作者:
S. Dutta;Peter Rivera-Casillas;M. Farthing
DOI:
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发表时间:
2019-08
期刊:
ArXiv
影响因子:
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作者:
Yifan Sun;Linan Zhang;Hayden Schaeffer
通讯作者:
Yifan Sun;Linan Zhang;Hayden Schaeffer
影响因子:
2
作者:
Ruthotto, Lars;Haber, Eldad
通讯作者:
Haber, Eldad