Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/82129
Title: Using DGCM to predict transient flow in plastic pipe
Authors: Urbanowicz, K
Bergant, A
Duan, HF 
Stosiak, M
Firkowski, M
Issue Date: 2019
Source: IOP conference series : earth and environmental science, 2019, v. 405, no. 1, 12020
Abstract: Transient flows with cavitation are commonly existent and observed in pressurized conveyance systems. The occurrence of large cavitation caverns accompanying hydraulic impacts in the pressurized pipes is particularly dangerous. There may then be interference of pressure waves traveling inside the pipe (especially between initial and secondary pressure waves). The maximum instantaneous pressures can rise in the most dangerous scenario to-magnitude that are twice as large as those calculated with a classic formula of Joukowsky. To protect these systems at the design stage it is advisable to estimate large pressure pulsations using appropriate numerical models. In this work transient cavitating flow in the plastic pipe was modeled using the modified discrete gas cavity model (DGCM). Retarded strain occurring in the studied plastic pipe was modeled with the aid of a convolutional integral of stress history and a derivative of the creep compliance function of the plastic pipe wall. In the simulation, the unsteady wall shear stress was determined using the recent Urbanowicz's computationally effective method.
Publisher: Institute of Physics Publishing
Journal: IOP conference series : earth and environmental science 
ISSN: 1755-1307
DOI: 10.1088/1755-1315/405/1/012020
Description: 8th IAHR International Workshop on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, IAHR 2019, Germany, 9-11 October 2019
Rights: Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd.
The following publication Urbanowicz, K., Bergant, A., Duan, H. F., Stosiak, M., & Firkowski, M. (2019, December). Using DGCM to predict transient flow in plastic pipe. In IOP Conference Series: Earth and Environmental Science (Vol. 405, No. 1, p. 012020). IOP Publishing, is available at https://doi.org/10.1088/1755-1315/405/1/012020
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