当前位置: X-MOL 学术Urban Water J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
CFD modeling of stagnation reduction in drinking water storage tanks through internal piping
Urban Water Journal ( IF 2.7 ) Pub Date : 2021-04-26 , DOI: 10.1080/1573062x.2021.1918184
Mohammad Alizadeh Fard 1 , Apurva Baruah 1 , Brian D. Barkdoll 1
Affiliation  

ABSTRACT

Poor mixing is considered to be the main reason for stagnation in water tanks. This can pose threats to public health. Internal tank piping with sprinklers (distributed outlets) has been previously proposed to avoid flow stagnation. This study is the first to use Computational Fluid Dynamics (CFD) modeling to investigate more cases and come up with design suggestions. The CFD modeling results using a realizable k-ϵ model were verified with experimental results for a limited number of cases involving the sprinkler system. The CFD model was used to investigate various tank aspect ratios and spherical tanks. Results showed the superior mixing of an angled-nozzle sprinkler system for spherical tanks. The effect of height-to-diameter ratio (H/D) on cylindrical tanks employing a sprinkler system as their inlet and outlet were investigated and two equations were suggested for prediction of mixing. These showed that for H/D less than 0.75 there was faster mixing.



中文翻译:

通过内部管道减少饮用水储罐滞流的 CFD 建模

摘要

混合不良被认为是水箱停滞的主要原因。这可能对公共健康构成威胁。先前已建议使用带有洒水器(分布式出口)的内部储罐管道来避免流动停滞。这项研究首次使用计算流体动力学 (CFD) 建模来调查更多案例并提出设计建议。使用可实现的k-ϵ的 CFD 建模结果模型通过涉及喷水灭火系统的有限数量的实验结果进行了验证。CFD 模型用于研究各种储罐纵横比和球形储罐。结果表明,用于球形储罐的斜喷嘴喷水灭火系统具有出色的混合效果。研究了高度直径比 (H/D) 对采用喷水灭火系统作为入口和出口的圆柱形储罐的影响,并提出了两个公式来预测混合。这些结果表明,对于小于 0.75 的 H/D,混合速度更快。

更新日期:2021-04-26
down
wechat
bug