%0 Journal Article
%T Desenvolvimento e valida£¿£¿o de equa£¿£¿o para determina£¿£¿o do coeficiente de dispers£¿o longitudinal em rios de m¨¦dio porte
%A Ribeiro
%A Celso Bandeira de Melo
%A Silva
%A Demetrius David da
%A Soares
%A Jos¨¦ Homero Pinheiro
%A Guedes
%A Hugo Alexandre Soares
%J Engenharia Sanitaria e Ambiental
%D 2010
%I Brazilian Association of Sanitary and Environmental Engineering
%R 10.1590/S1413-41522010000400012
%X in this paper, an equation has been developed to estimate the longitudinal dispersion coefficient (dl) in medium-sized rivers, with flow between 16.20 and 98 m3s-1, from experimental tests using fluorescent tracers. the equation was deduced by dimensional analysis and adjusted to the field data by the multiple linear regression technique. thereafter, the validation of the equation was performed by testing it in another database, which is different from the one it had been developed for, with flow between 19.57 and 48.54 m3s-1. additionally, the performance of four other empirical equations was compared for dl prediction using three comparative methods. the developed equation showed appropriate statistical adjustment and good result, with better overall performance when compared with other equations proposed in literature.
%K longitudinal dispersion
%K water pollution
%K water quality.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1413-41522010000400012&lng=en&nrm=iso&tlng=en