Journal ArticleDOI
Criteria for the selection of stochastic models of particle trajectories in turbulent flows
TLDR
In this paper, the relationships between the various criteria are examined for a very general class of models and it is shown that most of the criteria are equivalent and also how a model can be designed to satisfy these criteria exactly and to be consistent with inertial-subrange theory.Abstract:
Many different random-walk models of dispersion in inhomogeneous or unsteady turbulence have been proposed and several criteria have emerged to distinguish good models from bad. In this paper the relationships between the various criteria are examined for a very general class of models and it is shown that most of the criteria are equivalent. It is also shown how a model can be designed to satisfy these criteria exactly and to be consistent with inertial-subrange theory. Some examples of models that obey the criteria are described. As an illustration some calculations of dispersion in free-convective conditions are presented.read more
Citations
More filters
Posted ContentDOI
The Lagrangian particle dispersion model FLEXPART-WRF version 3.0
Journal ArticleDOI
Air-Parcel Residence Times Within Forest Canopies
TL;DR: In this article, a theoretical model based on turbulent diffusion and first-order chemical kinetics is proposed to determine air-parcel residence times and the out-of-canopy export of reactive gases emitted within forest canopies under neutral conditions.
Journal ArticleDOI
Observations and Modeling of Heavy Particle Deposition in a Windbreak Flow
TL;DR: In this article, a Lagrangian stochastic (LS) particle trajectory model is used to simulate heavy particle dispersion in an undisturbed flow and within a flow disturbed by a porous windbreak fence.
Journal ArticleDOI
In pursuit of anomalies—Analyzing the poleward transport of Atlantic Water with surface drifters
TL;DR: In this paper, the trajectories of 168 drifters were examined as a proxy for Atlantic water flowing through the Nordic Seas, and the mean arrival times to these locations were roughly 200 and 500 days, respectively.
Journal ArticleDOI
Predicting Scalar Source-Sink and Flux Distributions Within a Forest Canopy Using a 2-D Lagrangian Stochastic Dispersion Model
TL;DR: In this article, a two-dimensional Lagrangian stochastic dispersion model was proposed to estimate the spatial and temporal variation of scalar sources, sinks, and fluxes within a forest canopy.
References
More filters
Journal ArticleDOI
An Introduction to Probability Theory and Its Applications.
Journal ArticleDOI
Turbulence Structure in the Convective Boundary Layer
TL;DR: In this paper, a boundary layer experiment conducted over a flat site in northwestern Minnesota is discussed, where wind and temperature fluctuations near the ground were measured with AFCRL's fast-response instrumentation on a 32 m tower with MRU probes attached at five different heights to the tethering cable of a 1300 m2 kite balloon.
Book
Theory and Applications of Stochastic Differential Equations
Zeev Schuss,Robert O'Malley +1 more
TL;DR: Presents theory, sources, and applications of stochastic differential equations of Ito's type; those containing white noise; and the role of partial differential equations in this context.