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| 给水厂高密度沉淀池沉淀效果三维数值模拟与优化 | |
| 引用本文： | 雷晓玲,陈昆萍,陶礴. 给水厂高密度沉淀池沉淀效果三维数值模拟与优化[J]. 中国给水排水, 2012, 28(1): 43-47 |
| 作者姓名： | 雷晓玲 陈昆萍 陶礴 |
| 作者单位： | 1. 重庆交通大学河海学院,重庆 400074;重庆市科学技术研究院,重庆 401123 2. 重庆交通大学河海学院,重庆,400074 |
| 基金项目： | 重庆交通大学研究生教育创新基金 |
| 摘 要： | 应用FLUENT流体力学软件对重庆某大型在建给水厂高密度沉淀池沉淀区的流速场和浓度场进行了三维数值模拟,分析了不同运行参数与结构参数对沉淀区水流流场与沉淀效果的影响。模拟结果表明,增加进水口流速在一定程度上缓解了异重流现象,但不能提高沉淀效果;选取进水口流速为0.016 m/s,将沉淀池的导流墙左侧改为弧形,在斜板沉淀区前端加上1 m的挡板,可使异重流现象减弱,且沉淀效果得到明显的改善。 |
| 关 键 词： | 高密度沉淀池 三维数值模拟 运行参数 结构参数 |
3-D Numerical Simulation and Optimization of High-density Sedimentation Tank in Water Treatment Plant |
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| LEI Xiao-ling , CHEN Kun-ping , TAO Bo. 3-D Numerical Simulation and Optimization of High-density Sedimentation Tank in Water Treatment Plant[J]. China Water & Wastewater, 2012, 28(1): 43-47 | |
| Authors: | LEI Xiao-ling CHEN Kun-ping TAO Bo |
| Affiliation: | 1(1.School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074, China;2.Chongqing Academy of Science and Technology,Chongqing 401123,China) |
| Abstract: | The 3-D numerical simulation of velocity field and concentration field of sedimentation zone in high-density sedimentation tank of a large-scale water treatment plant under construction in Chongqing City was performed using FLUENT software.The influence of different operation parameters and structure parameters on the flow state and sedimentation effect was analyzed.The results show that increasing the inlet velocity can relieve the density current to a certain extent,but can not improve the sedimentation effect.When the inlet velocity is 0.016 m/s,changing the left side of guide wall into arc shape and adding one meter baffle in the front of the inclined plate settling zone can ease the density current,and the sedimentation effect can be significantly improved. |
| Keywords: | high-density sedimentation tank 3-D numerical simulation operation parameters structure parameters |
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