Abstract
Numerical solutions for the response of a geometrically nonlinear beam are investigated within the context of a new data-driven reduced order modeling (ROM) framework called optimal spatiotemporal reduced order modeling (OPSTROM). This modeling framework, which can potentially improve the accuracy of under-resolved simulations, accounts for the interactions between resolved scales and unresolved scales through the construction of subgrid-scale models which are consistent with the underlying spatiotemporal statistical structure of the dynamical system. Through numerical simulation, certain correlations amongst subgrid-scale dynamical quantities are investigated in order to simplify model construction.
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