Abstract
We present the results of fully resolved direct numerical simulations of monochromatic gravity waves breaking in the middle atmosphere. The simulations are initialized with optimal perurbations of the gives waves. Given a wavelength of 3 km, the required grid sizes range up to 3.6 billion computational cells, depending on the necessary domain size and the turbulence intensity. Our results provide an insight into the mechanics of gravity wave breaking they will be of great value for the validation of lower order methods for the prediction of wave breaking.
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Acknowledgements
U. A. and S. H. thank Deutsche Forschungsgemeinschaft (German Research Foundation, DFG) for partial support through the MetStröm (Multiple Scales in Fluid Mechanics and Meteorology) Priority Research Program (SPP 1276), and through Grants HI 1273/1-2 and Ac71/4-2. Computational resources were provided by the HLRS Stuttgart under the grants TIGRA and DINSGRAW and by the CSC Frankfurt.
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Remmler, S., Hickel, S., Fruman, M.D., Achatz, U. (2015). Direct Numerical Simulation of Breaking Atmospheric Gravity Waves. In: Nagel, W., Kröner, D., Resch, M. (eds) High Performance Computing in Science and Engineering ‘14. Springer, Cham. https://doi.org/10.1007/978-3-319-10810-0_39
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DOI: https://doi.org/10.1007/978-3-319-10810-0_39
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