基于CFD仿真模拟的斜板微涡流絮凝池结构优化  

Structural Optimization of Inclined Plate Micro-vortex Flocculation Tank Based on Computational Fluid Dynamics Simulation

作　　者：陈蕃 曾寒轩[3] 周石庆 邓林[1] 施周[1] CHEN Fan;ZENG Han-xuan;ZHOU Shi-qing;DENG Lin;SHI Zhou(Hunan Engineering Research Center of Water Security Technology and Application,College of Civil Engineering,Hunan University,Changsha 410082,China;China Machinery International Engineering Design&Research Institute Co.Ltd.,Changsha 410021,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]湖南大学土木工程学院水安全保障技术及应用湖南省工程研究中心,湖南长沙410082 [2]中机国际工程设计研究院有限责任公司,湖南长沙410021 [3]浙江工业大学土木工程学院,浙江杭州310023

出　　处：《中国给水排水》2024年第17期57-64,共8页China Water & Wastewater

基　　金：国家自然科学基金资助项目(52270004);湖湘青年英才项目(2021RC3039)。

摘　　要：采用计算流体力学(CFD)仿真模拟方法,优化一种新型斜板微涡流絮凝池的结构参数。基于流速、湍动能和湍流耗散率等基础水力指标,提出以涡旋尺度为衡量标准,考察不同结构参数下的流场流态,优化水力条件,提高絮凝效率。而后利用粒子图像测速技术(PIV)和中试验证仿真计算结果,确定最佳运行参数。结果表明,涡旋尺度是一种针对微涡流絮凝池效果评价的有效指标。粒子图像测速技术和中试结果均验证了对新型斜板微涡流絮凝池内部流场进行优化所取得的最佳结构参数。The structural parameters of a novel inclined plate micro-vortex flocculation tank were optimized through computational fluid dynamics(CFD)simulation.Utilizing the vortex scale as a criterion,the flow field and flow state under different structural parameters were investigated based on fundamental hydraulic indexes such as velocity,turbulent kinetic energy,and turbulent dissipation rate.This approach aimed to optimize hydraulic conditions and enhance flocculation efficiency.Subsequently,particle image velocimetry(PIV)and a pilot test were employed to validate the simulation results and ascertain the optimal operating parameters.The vortex scale served as an effective indicator for assessing the performance of micro-vortex flocculation tank.The particle image velocimetry technique and pilot test results validated the optimal structural parameters obtained through optimization of the internal flow field in the novel inclined plate micro-vortex flocculation tank.

关 键 词：计算流体力学 微涡流 涡旋尺度 絮凝 

分 类 号：TU991[建筑科学—市政工程]