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| Author(s): |
Alexandre Silveira
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Carlos. |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) |
| Defense date: | 2004-03-19 |
| Examining board members: |
Marcius Fantozzi Giorgetti;
Antenor Rodrigues Barbosa Junior;
Carlos Alberto Gasparetto;
Josmar Davilson Pagliuso;
Woodrow Nelson Lopes Roma
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| Advisor: | Marcius Fantozzi Giorgetti |
| Abstract | |
The influence of the atmospheric humidity on the process of absorption of oxygen by a water body through its free surface is presented herein. Laboratory experiments were run for the reoxygenation of a water mass kept in a cylindrical vessel under mechanical agitation. The quality of the atmospheric air transferring oxygen to water is controlled and the tests are run with several levels of air humidity, what renders different rates of evaporation. The corresponding coefficients of reaeration K2 (h-1) are determined for each experiment. The correlation between these two latter parameters is investigated. The process of reoxygenation is analyzed initially using a classical methodology based on traditional mathematical models (possibly inadequate). An original model for the same analysis is proposed in this work. (AU) | |