DEVELOPMENT OF A MATHEMATICAL MODEL TO DESCRIBE THE CONTAMINANT DISPERSION IN MEANDERING CONDITIONS
DOI:
https://doi.org/10.5902/2179460X20248Keywords:
Meandering. Autocorrelation function. Langevin equation.Abstract
In this work it’s derived a mathematical model to describe the meandering contaminants dispersion in the planetary boundary layer. The model employs a heuristic functional form for the velocity autocorrelation function which describes the negatives lobes observed in meandering data. Furthermore, the model is derived from the linearization of the Langevin equation. The mathematical equations, that represent the longitudinal and lateral wind components describe the bi-dimensional pattern of the meandering flow and can be utilized to calculate the contaminant concentrations occurring in situations in which the meandering phenomenon plays a decisive role.
Downloads
References
Carvalho, J. C. ; Vilhena, M. T. ; Degrazia, G. A. ; Sallet, M. A General Lagrangian Approach to Simulate Pollutant Dispersion in Atmosphere for Low-wind Condition. American Journal of Environmental Engineering, v. 3, p. 8-12, 2013.
Carvalho, J.C. and Vilhena, M. T. M. B. Pollutant dispersion simulation for low wind speed condition by the ILS method", Atmospheric Environment, vol.39, pp.6282-6288, 2005.
Frenkiel, F. N. Turbulent diffusion: mean concentration distribution in a flow field of homogeneous turbulence. Advances in Applied Mechanics, 3, 1953. 61–107.
Moor, L., Degrazia, G., Stefanello, M., Mortarini, L., Acevedo, O., Maldaner, S., Szinvelski, C., Roberti, D., Buligon, L., Anfossi, D. (2015). Proposal of a new autocorrelation function in low wind speed conditions. Physica A: Statistical Mechanics and its Applications, 438, 286–292.
Mortarini, L., Anfossi, D. (2015). Proposal of an empirical velocity spectrum formula in low-wind speed conditions. Quarterly Journal of the Royal Meteorological Society, 141(686), 85–97.
Mortarini, L., Ferrero, E., Falabino, S., Trini Castelli, S., Richiardone, R., Anfossi, D. (2013). Low-frequency processes and turbulence structure in a perturbed boundary layer. Quarterly Journal of the Royal Meteorological Society, 139(673), 1059–1072
Downloads
Published
How to Cite
Issue
Section
License
To access the DECLARATION AND TRANSFER OF COPYRIGHT AUTHOR’S DECLARATION AND COPYRIGHT LICENSE click here.
Ethical Guidelines for Journal Publication
The Ciência e Natura journal is committed to ensuring ethics in publication and quality of articles.
Conformance to standards of ethical behavior is therefore expected of all parties involved: Authors, Editors, Reviewers, and the Publisher.
In particular,
Authors: Authors should present an objective discussion of the significance of research work as well as sufficient detail and references to permit others to replicate the experiments. Fraudulent or knowingly inaccurate statements constitute unethical behavior and are unacceptable. Review Articles should also be objective, comprehensive, and accurate accounts of the state of the art. The Authors should ensure that their work is entirely original works, and if the work and/or words of others have been used, this has been appropriately acknowledged. Plagiarism in all its forms constitutes unethical publishing behavior and is unacceptable. Submitting the same manuscript to more than one journal concurrently constitutes unethical publishing behavior and is unacceptable. Authors should not submit articles describing essentially the same research to more than one journal. The corresponding Author should ensure that there is a full consensus of all Co-authors in approving the final version of the paper and its submission for publication.
Editors: Editors should evaluate manuscripts exclusively on the basis of their academic merit. An Editor must not use unpublished information in the editor's own research without the express written consent of the Author. Editors should take reasonable responsive measures when ethical complaints have been presented concerning a submitted manuscript or published paper.
Reviewers: Any manuscripts received for review must be treated as confidential documents. Privileged information or ideas obtained through peer review must be kept confidential and not used for personal advantage. Reviewers should be conducted objectively, and observations should be formulated clearly with supporting arguments, so that Authors can use them for improving the paper. Any selected Reviewer who feels unqualified to review the research reported in a manuscript or knows that its prompt review will be impossible should notify the Editor and excuse himself from the review process. Reviewers should not consider manuscripts in which they have conflicts of interest resulting from competitive, collaborative, or other relationships or connections with any of the authors, companies, or institutions connected to the papers.
