We investigated the influence of pressure oscillations on the heating of hydraulic oil. The investigation was carried out by means of experiment in which we sent pressure oscillations into a pipe closed at one end. The frequencies of the oscillations were between 0.5 and 40 Hz, at system pressures of 100, 200 and 300 bar. These measurements were performed on a pipe of 2 and 3 m lenght.
We found that the heating of the oil was most pronounced at higher frequencies and pressures. We also found that the pipe and the oil heated up the most in the middle of the pipe.
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