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Experimental Assessment of Water Hammer-Induced Column Separation in Oil-Hydraulic Pipe Flow
Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics. Linköping University, Faculty of Science & Engineering. Epiroc Rock Drills AB, Sweden.
Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-4656-7662
Epiroc Rock Drills AB, Sweden.
Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-5526-2399
2019 (English)In: Journal of Fluids Engineering - Trancactions of The ASME, ISSN 0098-2202, E-ISSN 1528-901X, Vol. 141, no 10, article id 101107Article in journal (Refereed) Published
Abstract [en]

Cavitation erosion through water hammer and column separation is a major concern in hydraulic applications such as percussive rock drilling. Cavitation aspects must be considered both in early and late design stages, which require deep knowledge and tools for prediction. In this study, an oil-hydraulic test equipment for water hammer assessment was designed using state-of-the-art simulation tools. Several tests were performed, with and without column separation, showing good repeatability on measured pressures. At higher flow rates, column separation was the dominating feature and several high-ressure peaks with subsequent time delay reduction could be observed. These patterns were affected by the oil temperature, with most substantial changes at lower temperature ranges (amp;lt; 32 degrees C). Standard transmission line simulations managed to predict the water hammer, but as expected not the column separation, which is the theme of future work using this setup.

Place, publisher, year, edition, pages
ASME , 2019. Vol. 141, no 10, article id 101107
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:liu:diva-160585DOI: 10.1115/1.4043854ISI: 000484559300008OAI: oai:DiVA.org:liu-160585DiVA, id: diva2:1362728
Note

Funding Agencies|Epiroc Rock Drills AB, Orebro, Sweden

Available from: 2019-10-21 Created: 2019-10-21 Last updated: 2019-10-21

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Jansson, MarcusAndersson, MagnusKarlsson, Matts
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Applied Thermodynamics and Fluid MechanicsFaculty of Science & Engineering
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