Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81293
Title: Simulation of unsteady flow in viscoelastic pipes
Authors: Firkowski, M
Urbanowicz, K
Duan, HF 
Keywords: Water hammer
Viscoelastic pipe
Unsteady flow
Method of characteristics
Frequency dependent friction
Issue Date: 2019
Publisher: Springer
Source: SN applied sciences, June 2019, v. 1, no. 6, 519, p. 1-10 How to cite?
Journal: SN applied sciences 
Abstract: The paper focuses on modeling of unsteady flows in a hydraulic system built of a pressure tank, a plastic pipeline and a quick-closing valve. The influence of unsteady friction as well as the experimentally obtained creep function (necessary for modeling retarded strains) on simulation results was investigated. In addition, the effectiveness of the dimensionless parameter P known from the literature was analyzed, especially in the context of rejecting an unsteady term decision. Detailed investigations on the variability of terms describing unsteady friction have shown that one should still look for a dimensionless parameter with the help of which it will be possible to decide on the friction model before making the calculations. The quantitative analysis carried out showed that the use of unsteady hydraulic resistance in simulated runs brought simulated results closer to experimental results.
URI: http://hdl.handle.net/10397/81293
ISSN: 2523-3963
EISSN: 2523-3971
DOI: 10.1007/s42452-019-0524-2
Rights: © The Author(s) 2019
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
The following publication Firkowski, M., Urbanowicz, K., & Duan, H. F. (2019). Simulation of unsteady flow in viscoelastic pipes. SN Applied Sciences, 1(6), 519, 1-10 is available at https://dx.doi.org/10.1007/s42452-019-0524-2
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