Modelling of the influence of entrained and dissolved air on the performance of an oil-hydraulic capacity
DOI:
https://doi.org/10.1080/14399776.2015.1110094Keywords:
entrained air, dissolved air, air mass transfer, lumped parameter simulation, bulk modulusAbstract
Fluids used in fluid power systems to transmit power and energy seldom consist of pure oil due to a large number of impurity sources. Especially impurities in form of air bubbles highly change the system behaviour with respect to stiffness and efficiency. The aim of this paper is to provide a mathematical model to simulate the effect of air on the pressure build-up and release in an oil-hydraulic capacity. Therefore, first a model to calculate the mass transfer between dissolved and entrained air is presented. In the end, the new developed model is validated with measurements.
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