Toy models of developed turbulence
We have investigated the advection of a passive scalar quantity by incompressible helical turbulent flow within the framework of extended Kraichnan model. Turbulent fluctuations of velocity field are assumed to have the Gaussian statistics with zero mean and defined noise with finite timecorrelat...
Збережено в:
| Дата: | 2005 |
|---|---|
| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2005
|
| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119487 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Toy models of developed turbulence / M. Hnatich, M. Jurcisin, M. Repasan // Condensed Matter Physics. — 2005. — Т. 8, № 1(41). — С. 123–133. — Бібліогр.: 30 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | We have investigated the advection of a passive scalar quantity by incompressible
helical turbulent flow within the framework of extended Kraichnan
model. Turbulent fluctuations of velocity field are assumed to have
the Gaussian statistics with zero mean and defined noise with finite timecorrelation.
Actual calculations have been done up to two-loop approximation
within the framework of field-theoretic renormalization group approach.
It turned out that space parity violation (helicity) of turbulent environment
does not affect anomalous scaling which is a peculiar attribute of the corresponding
model without helicity. However, stability of asymptotic regimes,
where anomalous scaling takes place, strongly depends on the amount of
helicity. Moreover, helicity gives rise to the turbulent diffusivity, which has
been calculated in one-loop approximation. |
|---|