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| Titel |
The backward Îto method for the Lagrangian simulation of transport processes with large space variations of the diffusivity |
| VerfasserIn |
D. Spivakovskaya, A. W. Heemink, E. Deleersnijder |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 3, no. 4 ; Nr. 3, no. 4 (2007-12-20), S.525-535 |
| Datensatznummer |
250001201
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| Publikation (Nr.) |
 copernicus.org/os-3-525-2007.pdf |
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| Zusammenfassung |
| Random walk models are a powerful tool for the investigation of transport
processes in turbulent flows. However, standard random walk methods are
applicable only when the flow velocities and diffusivity are sufficiently
smooth functions. In practice there are some regions where the rapid but
continuous change in diffusivity may be represented by a discontinuity. The
random walk model based on backward Îto calculus can be used for these
problems. This model was proposed by LaBolle et al. (2000). The latter is best suited to the problems
under consideration. It is then applied to two test cases with discontinuous
diffusivity, highlighting the advantages of this method. |
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