Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 19, issue 10
Articles | Volume 19, issue 10
https://doi.org/10.5194/hess-19-4041-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hess-19-4041-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 19, issue 10
Research article
 | 
05 Oct 2015
Research article |  | 05 Oct 2015

A methodological approach of estimating resistance to flow under unsteady flow conditions

M. M. Mrokowska, P. M. Rowiński, and M. B. Kalinowska

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Short summary
This paper presents evaluation of resistance parameters: friction slope, friction velocity and Manning coefficient in unsteady flow. Theoretical description is facilitated with the analysis of field data from artificial dam-break flood waves in a small lowland watercourse. The methodology to enhance the evaluation of resistance by relations derived from flow equations is proposed. The study shows the Manning coefficient is less sensitive to simplified relations than other parameters.
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