6Shi Weixiang, Cao Binggang, Tang Zhiyong. Review and progress on flow force of a poppet valve. In: Proceedings of the Second JHPS International Symposium on Fluid Power,Tokyo: 1993:423-428.
7Borghi M,Milani M,Paoluzzi R.Transient flow force estimation on the pilot stage of a hydraulic valve.Fluid Power and Systems Technology Division(Publication)FPST ASME,1998,5:157-162.
7Yuan Q,Li P Y. Using steady flow force for unstable valve design: modeling and experiments [J]. Journal of Dynamic Systems, Measurement, and Control, 2005,127 : 451-462.
8Amirante R, Vescovo O D, Lippolis A. Evaluation of the flow force on an open centre directional control valve by means of a computational fluid dynamic analysis [J]. Energy Conversion and Management, 2006,47: 1748-1760.
9Ferziger J H,Peric M. Computational methods for fluid dynamics [ M]. Berlin: Bertelsmann Springer Publishing Group, 2002 : 25-36.
