使用物理和数值模型评估旋转型水力动力分离器的性能
Zhexin Weng1, Yu Qian2, David Z Zhu3
1School of Civil & Environmental Engineering and Geography Science, Ningbo University, Zhejiang, China.
概括
这项研究分析了水力动力分离器,以完全去除悬浮固体. 增加分离器直径比增加高度更能改善沉积物去除,建议J值以优化设计.
科学领域:
- 环境工程 环境工程
- 流体力学 流体力学 流体力学
- 水处理 处理水的方法
背景情况:
- 水力动力学分离器对于控制雨水排水中的总悬浮固体 (TSS) 是至关重要的.
- 有效的TSS清除对于保护自然水体免受污染至关重要.
- 旋转流动力学分离器利用触角入口和出口来增强沉积物分离.
研究的目的:
- 为了研究特定的水力动力分离器设计的沉积物去除效率.
- 分析流速和沉积物特性对去除性能的影响.
- 探索设计修改,特别是维度变化,以改善沉积物捕获.
主要方法:
- 使用数值建模来模拟隔离器内的流场和沉积物运输.
- 在不同的流速和沉积物直径下评估了沉积物去除效率.
- 评估了增加分离器直径与高度对移除效率的影响.
主要成果:
- 数值模型证实,旋转的流场促进了沉积物的聚合和沉积.
- 观察到较低的沉积物去除率与较高的流速或较小的沉积物直径.
- 与增加分离器的高度相比,增加分离器的直径使沉积物清除效率得到了更大的改善.
结论:
- 该研究确定了影响水力动力分离器性能的关键因素,包括流速和沉积物大小.
- 增加分离器直径是一个比增加高度更有效的策略来增强沉积物去除.
- 为设计和优化水力动力分离器,提出了一种新的无维参数J,J ≥0.5表示>80%的去除效率.
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