An efficient method to calculate depth-integrated, phase-averaged momentum balances in non-hydrostatic models
نویسندگان
چکیده
Analysis of the mean (wave-averaged) momentum balance is a common approach used to explain physical forcing driving wave set-up and currents in nearshore zone. Traditionally this has been applied phase-averaged models but more recently phase-resolving using post-processing, whereby model output calculate each terms. While have advantage capturing nonlinear properties waves propagating (making them advantageous enhance understanding processes), post-processing calculation terms does not guarantee that closes. We show largely due difficulty (or impossibility) being consistent with numerical approach. If residual similar magnitude as any relevant (which methods we show), analysis compromised. Here present new method internally extract depth-integrated, non-hydrostatic wave-flow SWASH manner implementation. Further, demonstrate utility two existing studies. By framework, internal calculates much lower at computer precision, combined greatly reduced time storage requirements compared techniques. The developed here allows accurate evaluation wave-driven flows while taking complete representation dynamics offered by models. Furthermore, it provides an opportunity for advances processes particularly complex sites where nonlinearity energy transfers are important.
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ژورنال
عنوان ژورنال: Ocean Modelling
سال: 2021
ISSN: ['1463-5003', '1463-5011']
DOI: https://doi.org/10.1016/j.ocemod.2021.101846