Title: About using an empirical formulas for estimating the length of complete mixing waste waters discharged into the rivers and the channels

Authors: SKOWYSZ, A.

Keywords: length of complete mixing, shear velocity, hydrometric cross-section, dispersion coefficient, roughness, shear stress

Abstract: Majority of mathematical models, which are used for analysis the contaminant discharge impact on water quality, assume complete mixing in the place of discharge or in the short distance from this point. Nevertheless, the complete mixing phenomenon is very rare and the distance at what it occurs is conditioned by many factors. The problem of estimating the distance at which compete mixing occurs should be considered in a given cross-section of river in two dimensions: horizontal and vertical. It’s worth mentioning that mixing is considered as finished if mixing degree is at least 98 %.This article presents the results of estimations of contaminant complete mixing length in the water of Vistula river which were calculated by using an empirical methods encountered in literature.

APA style references: Skowysz, A. (2011). About using an empirical formulas for estimating the length of complete mixing waste waters discharged into the rivers and the channels. Scientific Review Engineering and Environmental Sciences, 20 (3), 237-246.

APA style citation in text: The first time citation in text: (Skowysz, 2011), next citation: (Skowysz, 2011)

Chicago style references: Skowysz, Aleksandra. "About using an empirical formulas for estimating the length of complete mixing waste waters discharged into the rivers and the channels." Scientific Review Engineering and Environmental Sciences, 53 ser., vol. 20, no 3, (2011): 237-246.

Chicago style citation in text: (Skowysz 2011)

Bibtxt style references: @article{Skowysz_2011_PNIKS, author={Skowysz, Aleksandra}, title={About using an empirical formulas for estimating the length of complete mixing waste waters discharged into the rivers and the channels.}, journal={Scientific Review Engineering and Environmental Sciences}, URL={http://iks_pn.sggw.pl/PN53/A8/art8.pdf}, year={2011}, volume={20 (3)}, number={53}, pages={237-246}}

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