水力旋流阀内部固液两相流动特性研究

doi:10.3969/j.issn.1005-0329.2023.08.012

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流体机械 ›› 2023, Vol. 51 ›› Issue (8) : 80-86. DOI: 10.3969/j.issn.1005-0329.2023.08.012

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水力旋流阀内部固液两相流动特性研究

马光飞^1,2,3, 丁鹏¹, 冯新红¹, 方勇¹

作者信息 +

Research on solid-liquid two-phase flow characteristics in hydrocyclone valve

MA Guangfei^1,2,3, DING Peng¹, FENG Xinhong¹, FANG Yong¹

Author information +

文章历史 +

摘要

为了研究水力旋流阀在城市管道污水流动中的固液两相流动特性，基于瞬态不可压缩流动的N-S方程和重整化群RNG k-ε湍流模型，耦合颗粒轨迹追踪模型，采用MATLAB编程处理初始边界颗粒分布模型，分析了颗粒质量浓度（5%，10%，15%）对水力旋流阀进出口压降、出口质量流量、内部流场颗粒的运动轨迹分布、颗粒的空间位置及液相速度流线分布的影响。结果表明：随着颗粒浓度增加，出口质量流量呈现减小趋势（52.2～53.2 kg/s），进出口压降线性增加，颗粒浓度影响水力旋流阀的截流特性；当颗粒质量浓度在15%以内，颗粒在水力旋流阀流场中具有很好的跟随性；通过试验验证发现，水力旋流阀内部产生了绕某一中心旋转的气带，该旋流气带可以作用到水力旋流阀出口管道内部，起到截流作用；水力旋流阀通过特有的气带特性，有利于污水管道截流控制的技术发展，具有较高的应用价值。

Abstract

In order to study the solid-liquid two-phase flow characteristics of hydrocyclone valve in urban pipeline sewage flow,based on the N-S equation of transient incompressible flow and the renormalization group RNG k-ε Turbulence model,coupled with particle trajectory tracking model,the initial boundary particle distribution model was processed with MATLAB programming,and the influences of particle mass concentrations(5%,10%,15%) on the pressure drop at the inlet and outlet of the hydrocyclone valve,the mass flow rate at the outlet,the particle trajectory distribution in the internal flow field,the particle spatial position and the liquid velocity streamline distribution were analyzed.The results show that with the increase of particle concentration,the mass flow rate at the outlet decreases(52.2~53.2 kg/s),and the pressure drop at the inlet and outlet increases linearly.The particle concentration affects the interception characteristics of the hydrocyclone valve;When the particle mass concentration is less than 15%,the particles have a good following in the flow field of the hydrocyclone valve;Through test verification,it is found that there is a gas zone rotating around a certain center inside the hydrocyclone valve,which can act on the inside of the outlet pipe of the hydrocyclone valve and play the role of interception;The hydrocyclone valve is beneficial to the technical development of sewage pipe interception control through its unique gas zone characteristics,and has a high application value.

导出引用

马光飞, 丁鹏, 冯新红, 方勇. 水力旋流阀内部固液两相流动特性研究[J]. 流体机械, 2023, 51(8): 80-86 https://doi.org/10.3969/j.issn.1005-0329.2023.08.012

MA Guangfei, DING Peng, FENG Xinhong, FANG Yong. Research on solid-liquid two-phase flow characteristics in hydrocyclone valve[J]. Fluid Machinery, 2023, 51(8): 80-86 https://doi.org/10.3969/j.issn.1005-0329.2023.08.012

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