RECORD
Mixing in a Meandering Jet: a Markovian Approximation
chao-dyn · Submitted 20 Jan 1998
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The outcome of the comparison suggests the possibility of describing in a satisfactory way at least some of the mixing properties ot the system through the very simplified approach of a first order markovian approximation, whereas other properties exhibit memory patterns of higher order.
The compiled record
The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
Open the compiled record
The abstract, sentence by sentence
In this paper we investigate mixing and transport in correspondence of a meandering jet. The large-scale flow field is a kinematically assigned streamfunction. Two basic mixing mechanisms are considered, first separately and then combined together: deterministic chaotic advection, induced by a time dependence of the flow, and turbulent diffusion, described by means of a stochastic model for particle motion. Rather than looking at the details of particle trajectories, fluid exchange is studied in terms of markovian approximations. The two-dimensional physical space accessible to fluid particles is subdivided into regions characterized by different Lagrangian behaviours. From the observed transitions between regions it is possible to derive a number of relevant quantities characterizing transport and mixing in the studied flow regime, such as residence times, meridional mixing, correlation functions. These estimated quantities are compared with the corresponding ones resulting from the actual simulations. The outcome of the comparison suggests the possibility of describing in a satisfactory way at least some of the mixing properties ot the system through the very simplified approach of a first order markovian approximation, whereas other properties exhibit memory patterns of higher order.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In this paper we investigate mixing and transport in correspondence of a meandering jet. | contribution 0.91 | 0.87 | 0.02 | asserted 0.66 |
| s1 | The large-scale flow field is a kinematically assigned streamfunction. | method 0.97 | 0.45 | 0.01 | asserted 1.00 |
| s2 | Two basic mixing mechanisms are considered, first separately and then combined together: deterministic chaotic advection, induced by a time dependence of the flow, and turbulent diffusion, described by means of a stochastic model for particle motion. | method 0.93 | 0.69 | 0.03 | asserted 0.97 |
| s3 | Rather than looking at the details of particle trajectories, fluid exchange is studied in terms of markovian approximations. | method 0.98 | 0.87 | 0.04 | asserted 0.97 |
| s4 | The two-dimensional physical space accessible to fluid particles is subdivided into regions characterized by different Lagrangian behaviours. | method 0.99 | 0.84 | 0.02 | asserted 0.99 |
| s5 | From the observed transitions between regions it is possible to derive a number of relevant quantities characterizing transport and mixing in the studied flow regime, such as residence times, meridional mixing, correlation functions. | method 0.85 | 0.90 | 0.05 | asserted 0.59 |
| s6 | These estimated quantities are compared with the corresponding ones resulting from the actual simulations. | method 0.70 | 0.93 | 0.04 | asserted 0.93 |
| s7 | The outcome of the comparison suggests the possibility of describing in a satisfactory way at least some of the mixing properties ot the system through the very simplified approach of a first order markovian approximation, whereas other properties exhibit memory patterns of higher order. | interpretation 0.76 | 0.94 | 0.89 | hedged possibility 1.00 |
What was examined, and what was not
- arXiv listing abstract v1
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
In this paper we investigate mixing and transport in correspondence of a meandering jet. The large-scale flow field is a kinematically assigned streamfunction. Two basic mixing mechanisms are considered, first separately and then combined together: deterministic chaotic advection, induced by a time dependence of the flow, and turbulent diffusion, described by means of a stochastic model for particle motion. Rather than looking at the details of particle trajectories, fluid exchange is studied in terms of markovian approximations. The two-dimensional physical space accessible to fluid particles is subdivided into regions characterized by different Lagrangian behaviours. From the observed transitions between regions it is possible to derive a number of relevant quantities characterizing transport and mixing in the studied flow regime, such as residence times, meridional mixing, correlation functions. These estimated quantities are compared with the corresponding ones resulting from the actual simulations. The outcome of the comparison suggests the possibility of describing in a satisfactory way at least some of the mixing properties ot the system through the very simplified approach of a first order markovian approximation, whereas other properties exhibit memory patterns of higher order.
Human review
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.