四川环境2025，Vol.44Issue(3)：104-113,10.DOI:10.14034/j.cnki.schj.2025.03.014
旋流除砂器用于隧道施工废水颗粒物高效分离的数值模拟研究
Study on Numerical Simulation of Cyclone Desanders for Efficient Separation of Particulates in Tunnel Construction Wastewater
摘要
Abstract
Addressing the efficient separation of particles in tunnel construction wastewater,this study establishes a particle motion model of a cyclone desander based on the CFD-DPM method.The research systematically analyzes how inlet shape,inlet angle,cone angle,inlet flow velocity,and particle lithology affect the flow field distribution,pressure drop,and particle separation characteristics inside the cyclone desander.Results show that while a circular inlet significantly influences the internal flow field distribution,it has no notable effect on the separation of particles larger than 8 μm.The inlet angle should not exceed 30° to avoid significant reduction in particle separation efficiency.Under varying inlet flow velocities,the cyclone desander demonstrates good impact resistance with minimal fluctuations in separation efficiency.A moderate inlet flow velocity is beneficial for reducing pressure drop while achieving high separation efficiency(＞75％).Among the tested materials,particles in wastewater from carbonaceous slate show better removal efficiency compared to mudstone and diorite.关键词
隧道施工废水/旋流除砂器/固液分离/数值模拟Key words
Tunnel construction wastewater/cyclone desander/solid-liquid separation/numerical simulation分类
资源环境引用本文复制引用
李林虎,刘义青,吕淼,何杨,王东梅,龚正君..旋流除砂器用于隧道施工废水颗粒物高效分离的数值模拟研究[J].四川环境,2025,44(3):104-113,10.基金项目
国家重点研发计划青年科学家项目(2023YFB2390100). （2023YFB2390100）
