Min W.,Lanzhou University of Technology |
Min W.,Hydraulic and Pneumatic Engineering Research Center in Gansu Province |
Ji H.,Lanzhou University of Technology |
Ji H.,Hydraulic and Pneumatic Engineering Research Center in Gansu Province |
And 4 more authors.
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | Year: 2014
To reveal the stability essence of pressure regulating valve with orifice, the response process of a poppet under the action of step and periodic excitation signal was simulated with fluid structure interaction algorithm. The axial vibration character of the poppet, the surface pressure distribution and varying rule of the poppet in front of valve port of different valve chamber structures were analyzed. It is found that the jet shock to the poppet divides poppet surface in front of valve port into jet impingement area and static pressure area, the vibration amplitude of the poppet depends on phase difference of the fluid force in jet impingement area and static pressure area, and is greatly reduced while the phase difference approaches to 180°.