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-pressure 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 (<32 °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.
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October 2019
Research-Article
Experimental Assessment of Water Hammer-Induced Column Separation in Oil-Hydraulic Pipe Flow
Marcus Jansson,
Marcus Jansson
Department of Management and Engineering,
Linköping University,
Linköping 58183, Sweden;
Linköping University,
Linköping 58183, Sweden;
1Corresponding author.
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Magnus Andersson,
Magnus Andersson
Department of Management and Engineering,
Linköping University,
Linköping 58183, Sweden
Linköping University,
Linköping 58183, Sweden
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Maria Pettersson,
Maria Pettersson
Underground Rock Excavation,
Epiroc Rock Drills AB,
Örebro 70225, Sweden
Epiroc Rock Drills AB,
Örebro 70225, Sweden
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Matts Karlsson
Matts Karlsson
Department of Management and Engineering,
Linköping University,
Linköping 58183, Sweden
Linköping University,
Linköping 58183, Sweden
Search for other works by this author on:
Marcus Jansson
Department of Management and Engineering,
Linköping University,
Linköping 58183, Sweden;
Linköping University,
Linköping 58183, Sweden;
Magnus Andersson
Department of Management and Engineering,
Linköping University,
Linköping 58183, Sweden
Linköping University,
Linköping 58183, Sweden
Maria Pettersson
Underground Rock Excavation,
Epiroc Rock Drills AB,
Örebro 70225, Sweden
Epiroc Rock Drills AB,
Örebro 70225, Sweden
Matts Karlsson
Department of Management and Engineering,
Linköping University,
Linköping 58183, Sweden
Linköping University,
Linköping 58183, Sweden
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received July 31, 2018; final manuscript received May 17, 2019; published online June 20, 2019. Assoc. Editor: Pierre E. Sullivan.
J. Fluids Eng. Oct 2019, 141(10): 101107 (9 pages)
Published Online: June 20, 2019
Article history
Received:
July 31, 2018
Revised:
May 17, 2019
Citation
Jansson, M., Andersson, M., Pettersson, M., and Karlsson, M. (June 20, 2019). "Experimental Assessment of Water Hammer-Induced Column Separation in Oil-Hydraulic Pipe Flow." ASME. J. Fluids Eng. October 2019; 141(10): 101107. https://doi.org/10.1115/1.4043854
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