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- Hans-Arndt Freudigmann
- Robert Bosch GmbH, Corporate Research, Renningen 71272, Germany e-mail:
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- Aaron Dörr
- Robert Bosch GmbH, Corporate Research, Renningen 71272, Germany e-mail:
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- Uwe Iben
- Robert Bosch GmbH, Corporate Research, St. Petersburg 198095, Russia e-mail:
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- Peter F. Pelz
- Chair of Fluid Systems, Technische Universität Darmstadt, Darmstadt 64289, Germany e-mail:
抄録
<jats:p>Impurities like air bubbles in hydraulic liquids can significantly affect the performance and reliability of hydraulic systems. The aim of this study was to develop a model suited for hydraulic system simulation to determine the rate of degassing of dissolved air in a micro-orifice flow at cavitating conditions. An existing model for the flow through a micro-orifice was extended to account for the generation of vapor which is suggested to play the key-role for the degassing mechanism. In comparison with measurements, the results of the modeling approach imply that diffusive mass transfer of dissolved air into generated vapor cavities is the dominating mechanism for the observed air release phenomena.</jats:p>
収録刊行物
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- Journal of Fluids Engineering
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Journal of Fluids Engineering 139 (11), 111301-, 2017-08-10
ASME International