Analysis and countereasure on hydraulic impact phenomena in hydraulic systems;

Characteristics analysis of coupling vibration of hydraulic impact

By analyzing the impact phenomenon of hydraulic support's hydraulic system,this research finds out the cause of hydraulic impact lies in the discontinuity of hydraulic flow velocity.

On the hydraulic shock in steering system of submarine;

On the basis of system design, the author analyzes the origin of hydraulic shock and cavitation erosion etc phenomena.

Through analysis of the hydraulic shock produced in the course of reversing of the reversing valve used in the cylinder pump circuit pump, the paper shows that this hydraulic shock in the return oil pipe in the hydraulic cylinder is the result from the mutual effect due to the oil inertial force and the loading inertia force.

A wet flue gas desulfurization impinge stream scrubber was introduced.

By the method of Volume-of-Fluid (VOF), a droplet impinging on a constant temperature flat surface is investigated numerically,the droplet size is between 50～150μm,and the velocity is between 1.

Oil Price Shocks: Macroeconomic Influence and the Adjustment of Monetary Policy;

Based on the LSTVAR model developed by Charlesl Weise and T-O-O grids search method,this paper analyzes nonlinear effects of oil price shocks on economy fluctuation of US,China and Japan.