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Quantificação e avaliação do coeficiente de dispersão longitudinal em cursos d\'água
| Content Provider | Semantic Scholar |
|---|---|
| Author | Oliveira, Vanessa Vaz De |
| Copyright Year | 2013 |
| Abstract | OLIVEIRA, V. V. Quantification and evaluation of longitudinal dispersion coefficient in streams. 2013. 122 p. Dissertação (Mestrado) – Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, 2013. An essential parameter in the mathematical modeling of water quality in order to analyze the impact caused by the release of effluents into surface water bodies is the longitudinal dispersion coefficient (DL) . Therefore, proper quantification of this parameter is of great importance to ensure the reliability of the results of a mathematical model of water quality. Thus, this paper proposed to quantify this parameter. For this, field tests were conducted with stimulus-response tracer salt (sodium chloride) in two small streams located in Uberaba MG. After completion of the field tests, direct methods to quantify the parameter from experimental data were used. The most reliable DL values derived from the routing procedure method, with valuer between 0,70 to 10,44 m 2 / s. Also we developed a mathematical model to predict the longitudinal dispersion coefficient from the experimental results based on dimensional analysis and multiple linear regression technique. The equation r 2 generated was 0,87, suggesting that this equation is suitable for the estimation of longitudinal dispersion in the studied streams. We also performed the validation of the applicability of the developed mathematical model to other field conditions different from those of your deduction, based on experimental results obtained by other authors. Finally we obtained in the literature for the sections of the studied streams, the longitudinal dispersion coefficients by the best known empirical and semi–empirical equations, comparing the performance of such equations with the equation developed in this work through statistical analysis. The equation produced in this study gave better predictions of the longitudinal dispersion coefficient for the studied streams than the equations used for comparison. |
| File Format | PDF HTM / HTML |
| DOI | 10.11606/D.18.2013.tde-27082014-144417 |
| Alternate Webpage(s) | https://teses.usp.br/teses/disponiveis/18/18138/tde-27082014-144417/publico/Vanessa_Vaz.pdf |
| Alternate Webpage(s) | https://doi.org/10.11606/D.18.2013.tde-27082014-144417 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
