液控调节阀空化与冲蚀仿真模拟与分析

发布时间：2018-03-03 23:07

本文选题：液控调节阀　切入点：空化　出处：《中国科技论文》2016年10期 　论文类型：期刊论文

【摘要】：基于液控调节阀的结构特性和流体物性参数,以开度40%为例建立数学模型,并采用Mixture模型和DPM(Discrete Phase Model)模型,对液控调节阀的空化和冲蚀现象进行数值模拟并分析。研究结果表明:当入口压力由4.5 MPa提高到5.5MPa时,阀芯与阀座之间的窄通道内流速变化剧烈,阀芯顶部抛物线段压力下降的区域增大,形成对称小椭圆形空化区域并脱离整个空化区域;当入口颗粒质量浓度一定时,阀芯顶部抛物线段磨损率分布趋势为:随颗粒直径的增大,磨损率先减小、后增大,然后再减小;当入口颗粒直径不变时,磨损率随入口颗粒质量浓度的增大而增大。
[Abstract]:The parameters of structural characteristics and fluid properties of hydraulic control valve based on the opening of 40% as an example to establish the mathematical model, and use the Mixture model and DPM (Discrete Phase Model) model, numerical simulation of cavitation and erosion phenomenon of hydraulic control valve was analyzed. The results show that: when the entrance pressure increased from 4.5 MPa to 5.5MPa, the change velocity of the narrow channel between the spool and the valve seat in the fierce, at the top of the valve core parabolic segment pressure drop increase in the area, form a symmetrical small oval area and separated from the whole cavitation cavitation region; when the mass concentration of particles at the top of the valve core entrance timing, parabolic segment wear rate distribution trend: with the increase of particle diameter, wear rate decreases, then increases, and then decreases; when the entrance diameter is constant, the wear rate increases with the concentration of entrance particles increases.

【作者单位】：浙江理工大学流动腐蚀研究所;
【基金】：国家自然科学基金资助项目(U1361107) 高等学校博士学科点专项科研基金资助项目(20133318120004)
【分类号】：TH137.52

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