[1]常志英,黄廷林.基于VOF数值模拟的扬水曝气器提水性能研究[J].西安建筑科技大学学报(自然科学版),2021,53(01):117-125.[doi:10.15986/j.1006-7930.2021.01.016]
　CHANG Zhiying,HUANG Tinglin.Research on the water lifting performance of waterlifting aerator based on VOF[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(01):117-125.[doi:10.15986/j.1006-7930.2021.01.016]
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基于VOF数值模拟的扬水曝气器提水性能研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年01期
页码:
117-125
栏目:
出版日期:
2021-02-28

文章信息/Info

Title:
Research on the water lifting performance of waterlifting aerator based on VOF
文章编号:
1006-7930(2021)01-0117-09
作者:
常志英1; 2; 黄廷林1
(1.西安建筑科技大学 环境与市政工程学院,陕西省环境工程重点实验室,陕西 西安 710055; 2.西安建筑科技大学 建筑设备科学与工程学院,陕西 西安 710055)
Author(s):
CHANG Zhiying1; 2;  HUANG Tinglin1
(1.School of Environmental and Municipal Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 2.School of Building Sevices Science and Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China)
关键词:
扬水曝气器;  提水性能;  数值模拟
Keywords:
water-lifting aerator;  water-lifting performance;  numerical simulation
分类号:
TU451
DOI:
10.15986/j.1006-7930.2021.01.016
文献标志码:
A
摘要:
为探析扬水曝气器内部流动特性,本文采用VOF(Volume of Fluid)法对扬水曝气器流场进行数值模拟,通过比对模拟和实验结果验证了模型的可靠性,详细分析了扬水曝气器内部气弹形成和释放过程及其流动特征,讨论了不同曝气速率和气室体积大小对扬水曝气器提水性能的影响.研究结果表明:数值模拟和试验结果间的误差在6%以内,该方法可靠; 利用VOF方法有效模拟了气室中气体的聚集、气弹形成及释放过程,并发现气体进入上升筒中所形成的并不是一个整体气弹,气弹后还尾随许多中小气泡,研究加深了对扬水曝气器内部流动特性的认识; 出口平均流速随着曝气速率的增大而增大,随着气室体积的减小而增大,并在参数的计算范围内给出了其拟合关系式; 其规律与丛海兵给出的结论一致,进一步印证了本文方法在扬水曝气器性能研究中的适用性,为后续扬水曝气器各项参数的优化设计提供了可靠的分析手段,具有较大的工程应用价值.
Abstract:
In order to analyze the internal flow characteristic of the water-lifting aerator, VOF(volume of fluid)method was used to simulate the flow field of the water-lifting aerator, the reliability of the VOF model was verified by comparing the simulation results with the experimental results, the formation and release process and flow characteristics of the air piston in the water-lifting aerator were analyzed in detail, the effects of different aeration rates and air chamber volume on the water lifting performance of the water-lifting aerator were discussed.The results show that: the error between numerical simulation and experimental results is less than 6%, so the method is reliable; VOF method is used to effectively simulate the process of gas accumulation, gas formation and release in the gas chamber, and it is found that the gas entering the ascending tube is not a whole piston, and many small and medium bubbles are also followed after the piston, which deepens the understanding on the flow characteristics of the internal flow in the water-lifting aerator The results show that: the average outlet velocity increases with the increase of aeration rate, and increases with the decrease of air chamber volume, and its fitting relationship is given within the calculation range of parameters; the law is consistent with the conclusion given by Cong Haibing, which further verifies the applicability of the method in the performance study of the water-lifting aerator, and provides a reference for the optimization design of various parameters of the water-lifting aerator, has great engineering application value.

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备注/Memo

备注/Memo:
收稿日期:2020-10-29 修改稿日期:2021-1-13
基金项目:国家自然科学基金资助项目(51979217); 陕西省重点研发计划项目(2019ZDLSF06-02)
第一作者:常志英(1983-),男,博士生,主要从事扬水曝气系统数值模拟研究.E-mail:changzhiying@xauat.edu.com
通讯作者:黄廷林(1962-),男,教授,博导,主要研究方向为水处理理论与技术和水质微污染控制与水资源保护.E-mail:huangtinglin@xauat.edu.com
更新日期/Last Update: 2021-02-28