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

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.