Numerical modeling of water hammer in long water transmission pipeline
| Autor: | Mahnaz Ghaeini-Hessaroeyeh, Mohammad Hossein Arefi, Rasoul Memarzadeh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Water hammer
Hydrogeology Petroleum engineering Water supply for domestic and industrial purposes Water flow 020208 electrical & electronic engineering 0208 environmental biotechnology 02 engineering and technology Pipeline (software) Negative pressure Pumps Transient flows 020801 environmental engineering Volumetric flow rate Pipeline transport Long water transmission pipelines Cavitation 0202 electrical engineering electronic engineering information engineering Environmental science Transient (oscillation) TD201-500 Water Science and Technology |
| Zdroj: | Applied Water Science, Vol 11, Iss 8, Pp 1-10 (2021) |
| ISSN: | 2190-5495 2190-5487 |
| Popis: | In the present study, a water transmission pipeline under steady conditions is modeled followed by examining the transient flow created by the failure of pumps in the pipeline. This pipeline is 31 km from the water transmission pipeline of Kerman, Iran. The software analysis results were compared with those of a numerical model for a laboratory test to validate transient flow modeling. While transient flows are created by pump failure, various areas of the water transmission pipelines will be affected by the transient waves produced. Long water transmission pipelines, usually large in diameter and flow rate, will pose problems in the negative pressure phase. The negative pressure causes threatening problems like water column separation and cavitation. The results indicated that using equipment like air valves when the pumps fail alone does not have the appropriate efficiency in eliminating the hazards in the water transmission pipelines. More examination showed that installing equipment like water flow feed and hydropneumatic tanks along the pipeline length in the right places prevents the negative pressure created and the pipeline risk significantly reduces. |
| Databáze: | OpenAIRE |
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