E3S Web Conf.
Volume 280, 2021Second International Conference on Sustainable Futures: Environmental, Technological, Social and Economic Matters (ICSF 2021)
|Number of page(s)||6|
|Section||Water Management and Environmental Engineering|
|Published online||30 June 2021|
Theoretical research of friction factor in hydraulically smooth pipes
1 National University of Water and Environmental Engineering, Department of Hydraulic Engineering and Hydraulics, Rivne, 33028, Ukraine
2 Inner Mongolia Agricultural University, No. 306, Zhaowuda Road, Saihan District, Hohhot, Inner Mongolia, 010018, China
* Corresponding author: firstname.lastname@example.org
The paper presents the disclosure of the problem of calculating the friction factor. This problem exists in the calculations of head losses for a given flow discharge and the geometric parameters of the pipes. The analysis of the formulas recommended by known scientists is described. The article also presents the shortcomings of the formulas and the variance of the adequacy of the experimental data. These research data were obtained by J. Nikuradze for smooth pipes. We obtained a formula based on the method of dimensional analysis. This formula characterizes the inner surface of the pipes. Also, this formula describes the change in the friction factor from the Reynolds number. The accuracy of calculating the obtained formula is higher than the accuracy of existing formulas.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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