| Автор | P. A. Kalugin |
| Автор | A. V. Sokol |
| Автор | E. B. Tatarinova |
| Дата выпуска | 1990-11-01 |
| dc.description | Motion of a passive component in a periodic incompressible steady flow is studied in the presence of intrinsic diffusivity of a medium. It is rigorously proven that for large distance and time the transport can be described as an effective anisotropic diffusion. Analytical properties of the effective diffusivity D<sub>n</sub>* for a given direction n as a function of complex P<sup>2</sup> (P is the Peclet number) are discussed. It is shown that the function D<sub>n</sub>*(P<sup>2</sup>) is meromorphic and both poles and zeroes of D<sub>n</sub>*(P<sup>2</sup>) are real and negative. It is proven that D<sub>n</sub>* < D(1 + const P<sup>2</sup>) for any real P. New algorithm based on the continued fractions is given to compute D<sub>n</sub>*(P<sup>2</sup>). |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Analytical Properties of the Effective-Diffusion Coefficient in Periodic Flows |
| Тип | lett |
| DOI | 10.1209/0295-5075/13/5/007 |
| Electronic ISSN | 1286-4854 |
| Print ISSN | 0295-5075 |
| Журнал | EPL (Europhysics Letters) |
| Том | 13 |
| Первая страница | 417 |
| Последняя страница | 421 |
| Выпуск | 5 |
