Operator Learning for Surrogate Modeling of Wave-Induced Forces from Sea Surface Waves

• URL: http://arxiv.org/abs/2604.06433v1
• Date: Tue, 07 Apr 2026 20:16:04 GMT
• Title: Operator Learning for Surrogate Modeling of Wave-Induced Forces from Sea Surface Waves
• Abstract summary: Wave setup plays a significant role in transferring wave-induced energy to currents and causing an increase in water elevation.<n>Traditional numerical wave models are complex and computationally expensive.<n>In this work, we explore the use of Deep Operator Networks (DeepONets) as a surrogate for the Simulating WAves Nearshore numerical wave model.
• Score: 1.8679286257105776
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Wave setup plays a significant role in transferring wave-induced energy to currents and causing an increase in water elevation. This excess momentum flux, known as radiation stress, motivates the coupling of circulation models with wave models to improve the accuracy of storm surge prediction, however, traditional numerical wave models are complex and computationally expensive. As a result, in practical coupled simulations, wave models are often executed at much coarser temporal resolution than circulation models. In this work, we explore the use of Deep Operator Networks (DeepONets) as a surrogate for the Simulating WAves Nearshore (SWAN) numerical wave model. The proposed surrogate model was tested on three distinct 1-D and 2-D steady-state numerical examples with variable boundary wave conditions and wind fields. When applied to a realistic numerical example of steady state wave simulation in Duck, NC, the model achieved consistently high accuracy in predicting the components of the radiation stress gradient and the significant wave height across representative scenarios.

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