Analysis of Unsteady Friction Models Used in Engineering Software for Water Hammer Analysis: Implementation Case in WANDA
| Autor: | Sam van der Zwan, David Ferras, Omar M. Abdeldayem, Maria D. Kennedy |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Water hammer
hydraulic transients lcsh:Hydraulic engineering Computer science Geography Planning and Development 0207 environmental engineering Mechanical engineering 02 engineering and technology Aquatic Science 01 natural sciences Biochemistry Viscoelasticity WANDA 010305 fluids & plasmas Software lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 0103 physical sciences unsteady friction hydraulic networks 020701 environmental engineering water hammer Reliability (statistics) Water Science and Technology Commercial software lcsh:TD201-500 business.industry Transient waves Experimental data Transient (oscillation) business |
| Zdroj: | Water, Vol 13, Iss 495, p 495 (2021) Water Volume 13 Issue 4 |
| ISSN: | 2073-4441 |
| Popis: | Transient events are frequent in water distribution systems. However, until now, most of the applications based on transient analyses are merely theoretical. Additionally, their implementation to real engineering problems is limited due to several physical phenomena accompanying transient waves, which are not accounted for in the classic approach, such as unsteady friction. This study investigates different unsteady friction models’ performance in terms of accuracy, efficiency, and reliability to determine the most-suited engineering practice. As a result of this comparison, Vítkovský’s unsteady friction model was found to be the best fit and was then implemented in WANDA commercial software. The implementation was verified with experimental data based on a reservoir–pipe–valve system. The model proved excellent performance however, it was noticed that it fell short in simulating plastic pipes, where viscoelastic effects dominate. The upgraded software was then tested on different hydraulic networks with varying pipe materials and configurations. The model provided significant improvement to water hammer simulations with respect to wave shape, damping, and timing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|