International Science Index


High-Fidelity 1D Dynamic Model of a Hydraulic Servo Valve Using 3D Computational Fluid Dynamics and Electromagnetic Finite Element Analysis

Abstract:The dynamic performance of a 4-way solenoid operated hydraulic spool valve has been analyzed by means of a one-dimensional modeling approach capturing flow, magnetic and fluid forces, valve inertia forces, fluid compressibility, and damping. Increased model accuracy was achieved by analyzing the detailed three-dimensional electromagnetic behavior of the solenoids and flow behavior through the spool valve body for a set of relevant operating conditions, thereby allowing the accurate mapping of flow and magnetic forces on the moving valve body, in lieu of representing the respective forces by lower-order models or by means of simplistic textbook correlations. The resulting high-fidelity one-dimensional model provided the basis for specific and timely design modification eliminating experimentally observed valve oscillations.
[1] M. Gayer, J. Kortelainen and T. Karhela, “CFD modeling as an integrated part of multi-level simulation of process plants: semantic modelling approach,” Proc. of the 2010 Summer Computer Sim. Conf. (SCSC ’10). Society of Computer Simulation International, San Diego, CA, USA, 219-227.
[2] M. Ljubijankic, C. Nytsch-Geusen, A. Jänicke, and M. Schmidt, “Advanced Analysis of Coupled 1D/3D Simulation Models by the Use of a Solar Thermal System,” Proc. of the 12th Conf. of Int. Building Perf. Sim. Association, 2011, pp. 1871-1877.
[3] X. Chen, J. Yang, T. Yu, and S. Yang, “A Coupled 1D/3D Co-Simulation Approach in Simulating Aircraft Cabin Temperature Field,” Int. J. of Sim. Systems. Science and Technology, Vol.17, No. 40, pp. 11.1-11.7.
[4] K. Wolf, and P. Bayrasy, “Generic Coupling of 1D System Codes with 3D CFD Tools,” ERCIM News, 2010, No.81, pp.27-28, ISSN: 0926-4981.
[5] Z. Liu, S., Benjamin, C. Roberts, H. Zhao, and A. Arias-Garcia, “A coupled 1D/3D simulation for the flow behaviour inside a close-coupled catalytic converter,” SAE Technical Paper, 2003-01-1875.
[6] C. Mehring, A. Zopey, M. Latham, T. Ihde, and D. Massie, “Decoupled 1D/3D Analysis of a Hydraulic Valve,” Int. Conf. of Comp. Methods in Sci. and Eng. 2014, AIP Conf. Proc. 1618, 2014, pp. 979-982.
[7] H. E. Merritt, “Hydraulic Control Systems,” John Wiley and Sons, Inc., 1967, Ch. 5, pp. 76-77.