Diffusion of passive scalars under stochastic convection
The diffusion of passive scalars convected by turbulent flows is addressed here. A practical procedure to obtain stochastic velocity fields with well¿defined energy spectrum functions is also presented. Analytical results are derived, based on the use of stochastic differential equations, where the...
| Authors: | , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 1994 |
| Country: | España |
| Institution: | Universidad de Barcelona |
| Repository: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/24895 |
| Online Access: | https://hdl.handle.net/2445/24895 |
| Access Level: | Open access |
| Keyword: | Mecànica de fluids Turbulència Hidrodinàmica Estadística Mètode de Montecarlo Fluid mechanics Turbulence Hydrodynamics Statistics Monte Carlo method |
| Summary: | The diffusion of passive scalars convected by turbulent flows is addressed here. A practical procedure to obtain stochastic velocity fields with well¿defined energy spectrum functions is also presented. Analytical results are derived, based on the use of stochastic differential equations, where the basic hypothesis involved refers to a rapidly decaying turbulence. These predictions are favorable compared with direct computer simulations of stochastic differential equations containing multiplicative space¿time correlated noise. |
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