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Title: Evaluation of flow resistance in smooth rectangular open channels with modified Prandtl friction law
Authors: Cheng, Nian-Sheng
Nguyen, Hoai Thanh
Zhao, Kuifeng
Tang, Xiaonan
Keywords: DRNTU::Engineering::Civil engineering::Water resources
Issue Date: 2011
Source: Cheng, N. S., Nguyen, H. T., Zhao, K., & Tang, X. (2011). Evaluation of Flow Resistance in Smooth Rectangular Open Channels with Modified Prandtl Friction Law. Journal of Hydraulic Engineering, 137(4), 441-450.
Series/Report no.: Journal of hydraulic engineering
Abstract: Flow resistance in open channels is usually estimated by applying the approach that is developed originally for pipe flows. Such estimates may be useful for engineering applications but always differ from measurements to some extent. This paper first summarizes empirical approaches that have been proposed in the literature to reconcile the resistance difference. These include various modifications of the pipe friction for applications to rectangular ducts and open channel flows. An improved friction equation is then derived for evaluating flow resistance of smooth rectangular open channels. Comparisons are made with experimental data reported by previous researchers and those collected in the present study. It is shown that the new proposed equation is applicable for both narrow and wide channels and is more accurate than those available in the literature.
ISSN: 0733-9429
DOI: 10.1061/(ASCE)HY.1943-7900.0000322
Schools: School of Civil and Environmental Engineering 
Rights: © 2011 ASCE. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Hydraulic Engineering, American Society of Civil Engineers. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI:].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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