@article{Pace_Ferro_Fraternale_Vedova_Caimano_Maggiore_2018, title={COMPARATIVE ANALYSIS OF A HYDRAULIC SERVO-VALVE}, volume={14}, url={https://journals.riverpublishers.com/index.php/IJFP/article/view/222}, abstractNote={<p>The aim of this work was to obtain the correct hydraulic proprieties of a hydraulic spool servo-valve using computational fluid-dynamics (CFD) techniques and adopting an accurate enough mesh to analyse the flow pattern inside the valve. The zones where thickening of the mesh is necessary have been detected and a method to generate the mesh, based on Reynolds numbers and spool stroke, has successfully been used to minimize computational resources. A comparison with numerical and experimental results (Dong and Ueno, 1999) confirms the accurate description of the behaviour of the valve. The results have been compared with the theoretical behaviour, through a 1D multi-physics model simulation, in order to understand in which conditions the theoretical model is not able to describe the valve properties carefully enough and a more accurate CFD model should be used. As CFD analysis requires high computational resources, a method to improve 1D model accuracy through CFD techniques has been proposed, so that after a preliminary CFD analysis of the valve, it would be possible to analyse a whole hydraulic system with a 1D model.</p>}, number={2}, journal={International Journal of Fluid Power}, author={Pace, Lorenzo and Ferro, Marco and Fraternale, Federico and Vedova, Matteo Dalla and Caimano, Antonio and Maggiore, Paolo}, year={2018}, month={Dec.}, pages={53–62} }