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dynamic mode decomposition 1laminar airfoil wake 1modal analysis 1smoothness regularization 1sparsity regularization 1transient dynamics 1

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physics.flu-dyn2026

Dynamic mode decomposition for detecting oscillatory transient activity via sparsity and smoothness regularization

Yutaro Tanaka, Hiroya Nakao

The paper extends dynamic mode decomposition by adding sparsity and smoothness regularization to obtain time‑varying amplitudes, enabling clearer identification of oscillatory tran…