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Computational Fluid Dynamics Can Help You Design Your Disinfection Basin 计算流体力学可以帮助你设计消毒池
发布日期: 1999-01-01
1986年《安全饮用水法》(SDWA)修正案和提议的 消毒剂/消毒副产品规则(D/DBPR)带来了一些冲突 消毒条例,其中消毒的完成水位必须 当消毒剂和消毒副产品残留物必须 降下。本研究项目的目的是评估一种最大化 接触器的液压效率,以减少所需的消毒剂 浓度和随后的消毒副产品 可以控制和/或最小化形成。有效设计新的盆地和 现有洗手池的改造在消毒监管中发挥着重要作用 顺从接触器的液压性能会受到以下因素的影响: 内部挡板和入口和出口位置。了解 关于水力学和消毒的水池配置,从 通常分析在全尺寸或中试规模盆地上进行的示踪试验。 这些昂贵的实验示踪剂测试方法的一个有吸引力的替代品, 是使用计算流体动力学(CFD)建模来模拟示踪物 学习除了测定从 示踪试验、CFD建模提供了对内部流动模式的洞察,包括 速度、能量和压力。这个研究项目的目标是 评估模拟示踪剂测试再现示踪剂数据的能力 并分析了折流板布置和进口与出口的影响 出口位置对接触器性能的影响。不同配置的 使用商用有限元模型对消毒接触器进行建模 元素CFD软件包称为FIDAP(R)。水力和浓度 分布用于确定最佳流域设计。进行了示踪研究 使用CFD软件进行模拟,并最终与经验数据进行比较 验证这种方法。包括22个参考文献、表格和图表。
The Safe Drinking Water Act (SDWA) Amendments of 1986 and the proposed Disinfectants/Disinfection Byproducts Rule (D/DBPR) impose somewhat conflicting disinfection regulations whereby the finished water level of disinfection must be increased while the disinfectant and disinfection byproduct residuals must be lowered. The aim of this research project was to evaluate a method for maximizing the hydraulic efficiency of contactors in order to reduce required disinfectant concentrations and subsequently, the disinfection byproduct formation can be controlled and/or minimized. Effective design of new basins and retrofitting of existing basins play an important role in disinfection regulation compliance. The hydraulic performance of a contactor can be influenced by internal baffling and inlet and outlet location. To understand the effects of the basin configuration on hydraulics and disinfection, empirical data obtained from tracer tests performed on full scale or pilot scale basins are usually analyzed. An attractive alternative to these expensive experimental tracer testing methods, is the use of computational fluid dynamics (CFD) modeling to simulate tracer studies. In addition to determining concentration profiles as obtained from tracer tests, CFD modeling offers insight on the internal flow patterns including velocity, energy, and pressure. The goals of this research project were to evaluate the ability of simulated tracer tests to reproduce data from tracer experiments, and to analyze the influence of baffling arrangements and inlet and outlet positions on the performance of the contactor. Various configurations of disinfection contactors were modeled using a commercially available finite element CFD software package called FIDAP(R). The hydraulics and concentration distribution were used to determine optimal basin designs. Tracer studies were simulated using the CFD software and ultimately compared to empirical data to validate this approach. Includes 22 references, tables, figures.
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发布单位或类别: 美国-美国给水工程协会
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