The hydrodynamic performances of a novel hydraulic shock generator are examined. The shock generator is designed to impose the strong power of waterhammer in mining industry. The experimental results show that the wat...
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The hydrodynamic performances of a novel hydraulic shock generator are examined. The shock generator is designed to impose the strong power of waterhammer in mining industry. The experimental results show that the waterhammer produced by the periodic fast switch of a flowing fluid has different features with that of a single closure observed by other researchers. In particular, the intensity of the waterhammer depends largely on the switch frequency due to the interaction of successive pressure waves. The flow transient phenomena are theoretically proved by the simulation results based on the finite difference method of characteristics.
A statistic linearization analysis method of bad nolinear hydraulic active damping suspension is *** the optimum control strategy of semi active suspension and graded control strategy based on it are puted *** resear...
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A statistic linearization analysis method of bad nolinear hydraulic active damping suspension is *** the optimum control strategy of semi active suspension and graded control strategy based on it are puted *** researches are carried out on a 2 DOF(degree of freedom) hydraulic active damping suspension test *** results showed that an excellent control effectiveness could be obtained by using statistic linearization optimum control which unfortunely requests continuously regulationg the damp in an accurate way and costs much in engeering *** the contrary,the results also showed that graded control is more practicable which has a control effectiveness close to the optimum control and costs less.
The technique of object-oriented feature-based solid modeling andits application in the CAD of hydraulic manifold block (HMB) arediscussed. The research can greatly improve the convenience andefficiency of product des...
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The technique of object-oriented feature-based solid modeling andits application in the CAD of hydraulic manifold block (HMB) arediscussed. The research can greatly improve the convenience andefficiency of product design for HMB, as well as for the othermechanical products.
In this paper the flow field in a static mixer is measured by Particle Image Velocimetry (PIV), which belongs to the technique of flow visualization. The vorticity field is obtained from the velocity field. The sequen...
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In this paper the flow field in a static mixer is measured by Particle Image Velocimetry (PIV), which belongs to the technique of flow visualization. The vorticity field is obtained from the velocity field. The sequences of particle images are analyzed statistically and the mixing homogeneity degrees are also determined by calculating probability densities. The relation between the mixing result is also related to the state of flow. The experiment show that the mixing is mainly affected by the motion of vortices, not turbulence diffusion.
In order to improve the engineering performance of a novel hydraulic shock generator, the fluid flow inside its complex passages is numerically investigated. The effects of the inlet flow velocity upon the turbulenc...
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In order to improve the engineering performance of a novel hydraulic shock generator, the fluid flow inside its complex passages is numerically investigated. The effects of the inlet flow velocity upon the turbulence intensity of the jet flow are analyzed. The calculated pressure loss is experimentally verified with the consideration of temperature determined viscosity shifting. The results are used as the reference in the further development of the hydraulic shock generator
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