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Dynamic Mode Decomposition for Subcritical Metal Systems

Zachary K. Hardy, Jim E. Morel, Cory Ahrens

Nuclear Science and Engineering / Volume 193 / Number 11 / November 2019 / Pages 1173-1185

Technical Paper / dx.doi.org/10.1080/00295639.2019.1609317

Received:February 19, 2019
Accepted:April 12, 2019
Published:October 25, 2019

In this paper we explore the use of dynamic mode decomposition (DMD) for modeling the kinetics of subcritical metal systems pulsed with fast neutrons. Our ultimate purpose is to obtain a fast and accurate reduced-order model for such systems that can be used to develop an emulator. An alternative to DMD is α-eigenfunction expansions, but we show that DMD is vastly superior in several ways for the systems of interest to us.

 
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