Abstract
We consider a steady, geophysical 2D fluid in a domain, and focus on its western boundary layer, which is formally governed by a variant of the Prandtl equation. By using the von Mises change of variables, we show that this equation is well-posed under the assumptions that the trace of the interior stream function is large, and variations in the coastline profile are moderate.
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Notes
Note that here y is the tangential variable and \(\xi \) is the rescaled normal variable, in contrast with the usual convention in the study of the Prandtl equation. We have made this choice to stick to the geophysical setting, in which u is the East-West component of the velocity and v its North-South component.
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Acknowledgements
This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program Grant Agreement No. 637653, project BLOC “Mathematical Study of Boundary Layers in Oceanic Motion”. The authors have also been partially funded by the ANR project Dyficolti ANR-13-BS01-0003-01.
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Dalibard, AL., Paddick, M. An Existence Result for the Steady Rotating Prandtl Equation. J. Math. Fluid Mech. 23, 13 (2021). https://doi.org/10.1007/s00021-020-00524-4
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DOI: https://doi.org/10.1007/s00021-020-00524-4