Abstract
This paper presents parameterisations of the subgrid eddy-eddy and eddy-meanfield interactions in a baroclinic oceanic simulation representative of the Antarctic Circumpolar Current. High resolution benchmark simulations are undertaken using a quasi-geostrophic spectral spherical harmonic code of largest wavenumber T = 504. The eddyeddy interactions are represented by both stochastic and deterministic parameterisations, with model coefficients determined from the benchmark simulation truncated back to the large eddy simulation (LES) truncation wavenumber TR < T. Coefficients of the deterministic eddy-meanfield model are determined by a least squares regression method. Truncations are repeated for various TR, with the dependence of the coefficients on the resolution TR identified. Kinetic energy spectra from the LESs agree with the benchmark simulation. Scaling laws governing the subgrid coefficients are presented, which remove the need to generate the subgrid coefficients from benchmark simulations.
| Original language | English |
|---|---|
| Title of host publication | Proceedings |
| Subtitle of host publication | International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013 |
| Editors | A. V. Johansson |
| Place of Publication | Poitiers France |
| Publisher | University of Poitiers |
| Number of pages | 6 |
| Volume | 1 |
| Edition | 2013 |
| ISBN (Electronic) | 9780000000002 |
| Publication status | Published - 2013 |
| Event | Turbulence and Shear Flow Phenomena 2013 - École Nationale Supérieure de Mécanique et d'Aérotechnique, Poitiers, France Duration: 28 Aug 2013 → 30 Aug 2013 Conference number: 8th https://web.archive.org/web/20130403150344/http://tsfp8.pprime.fr/index.php |
Conference
| Conference | Turbulence and Shear Flow Phenomena 2013 |
|---|---|
| Abbreviated title | TSFP-8 |
| Country/Territory | France |
| City | Poitiers |
| Period | 28/08/13 → 30/08/13 |
| Other | The series of biennial TSFP Symposia is the principal venue for reporting and disseminating recent and ongoing research on turbulence and shear flow phenomena. |
| Internet address |