Solid contamination existing as solid particles in power fluid transmission systems may lead to transmission perfor- mance reduction, system failures, and component damage. The hydraulic reservoir will deposit the contamination and store hydraulic fluid. To investigate its purification ability for solid contamination, experiments and simulations for the motion and deposition status of the typical hydraulic system particles are carried out to reveal the interaction of particles and fluid in hydraulic water reservoirs. The results show that the CFD-DEM coupling method could predict the accurate deposition position of iron particles and sand particles when ignoring the small-scale turbulence effect in the flow field. Besides, the particle motion traces and deposition patterns in the reservoir illustrate that the flow development on the bottom surface results in the particles turning, and particles tend to settle in the low flow energy position. The motion of particles is also linked to particles Stokes number, and the same-size sand particles are easily driven by the fluid. The contribution of this paper could provide a guide for predicting the particle motion and depo-sition pattern in the hydraulic reservoir.

Mandi Li;Decai Kong;Qi Guo;Xiangyu Liu;Jing Yao;Jianjun Hu;Lijuan Chen

School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China;Fluid Power Transmission and Control Laboratory,Yanshan University,Qinhuangdao 066004,China;School of Civil Engineering and Mechanics, Yanshan University,Qinhuangdao 066004,China;School of Mechanical Engi-neering,Nanjing Institute of Technology,Nanjing 211167,China

中国机械工程学报

[1]Mandi Li;Decai Kong;Qi Guo;Xiangyu Liu;Jing Yao;Jianjun Hu;Lijuan Chen-.Investigation of Movement and Deposition Behaviors of Solid Particles in Hydraulic Water Reservoir via the CFD?DEM Coupling Method)[J].中国机械工程学报,2022(06):117-128

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