DOE OSTI · code-175974
Sparsified Time-dependent PDEs FNO (STFNO) v1.0.0
Abstract
STFNO (Sparsified Time-dependent PDEs FNO code) is an extension of the popular Fourier Neural Operator (FNO) architecture to the solution of coupled systems of time-dependent partial differential equations. STFNO leverages the sparsified dependencies on the field quantities based on the semi-discretiezed form of the PDEs, enabling significant reduction in the number of model parameters. STFNO has been extensively tested on two fusion simulation codes, NIMROD and GTC, and can be easily tailored to other systems of PDEs.
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Rahman, Mustafa [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)], Liu, Yang [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)]. 2025-02-04. Sparsified Time-dependent PDEs FNO (STFNO) v1.0.0. https://doi.org/10.11578/dc.20260219.2
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