Numerical Simulation of a Spool Valve in Gaseous Cavitation Conditions
DOI:
https://doi.org/10.13052/ijfp1439-9776.23311Keywords:
Gaseous cavitation, spool valve, 3D – CFD numerical approach, experimental testsAbstract
Spool valves are subject to a deteriorated performance and noise due to the occurrence of cavitation phenomena. It is well known that cavitation effects the performance of the component and causes an unwanted noise. The noise sound levels are influenced by many parameters like geometries and opening areas. In this paper a simple valve body made in plexiglass has been tested analyzing the cavitating area in U-grooves. A dedicated test rig has been equipped with a high-speed camera to acquire images of the phenomenon. A numerical three-dimensional CFD model has been built up using the commercial code. Experimental imagines have been compared with the numerical results showing a high accuracy on the prediction of the gaseous cavitation. The numerical results allow separate examination of several distinctive flow characteristics, which show favorable consistency with experimental observation and a periodic evolution of cavitation structure.
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References
X. Fu, L. Lu, X.D. Ruan, J. Zou, X.W. Du, 2008, Noise Properties in Spool Valves with Cavitating Flow, International Conference on Intelligent Robotics and Applications ICIRA 2008: Intelligent Robotics and Applications pp. 1241–1249;
C.S. Martin, H. Medlarz, D. C. Wiggert, C. Brennen, 1981, Cavitation inception in spool valves, J. Fluids Eng., 103(4), pp. 564–575;
S. Oshima, T. Ichikawa, 1985, Cavitation Phenomena and Performance of Oil Hydraulic Poppet Valve: 1st report mechanism of generation of cavitation and flow performance. Bulletin of JSME, 28(244), pp. 2264–2271.
S. Oshima, T. Ichikawa, 1985, Cavitation Phenomena and Performance of Oil Hydraulic Poppet Valve: 2nd Report, Influence of the Chamfer Length of the Seat and the Flow Performance. Bulletin of JSME, 28(244), pp. 2272–2279.
S. Oshima, T. Ichikawa, 1986, Cavitation Phenomena and Performance of Oil Hydraulic Poppet Valve: 3rd report, influence of the poppet angle and oil temperature on the flow performance. Bulletin of JSME, 29(249), pp. 743–750.
S. Oshima, T. Leino, M. Linjama, K. T. Koskinen, M. J. Vilenius, 2001, Effect of cavitation in water hydraulic poppet valves., International Journal of Fluid Power, 2(3), pp. 5–13.
E. Frosina, A. Senatore, D. Buono, K. A. Stelson, 2016, A Mathematical Model to Analyze the Torque Caused by Fluid–Solid Interaction on a Hydraulic Valve, J. Fluids Eng., 138(6): 061103;
A.K. Singhal, M.M. Athavale, H.Y. Li, Y. Jiang, 2002,“Mathematical basis and validation of the full cavitation model, J. Fluids Eng. vol. 124, pp. 617–624.
E. Frosina, G. Marinaro, A. Senatore, M. Pavanetto, Effects of PCFV and Pre-Compression Groove on the Flow Ripple Reduction in Axial Piston Pumps, Proceeding of 2018 Global Fluid Power Society PhD Symposium, GFPS 2018; Samara; Russian Federation; 18–20 July 2018.
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