一种低成本可编程的逆流柱装置,用于调查混合区
Reid E Buskirk1, Peter S K Knappett1, M Bayani Cardenas2
1Department of Geology and Geophysics, Texas A&M University, College Station, Texas, 77843, USA.
Ground water
|September 30, 2023
概括
一个新的可编程逆流装置准确模拟动态含水层条件. 这种工具对于了解水流和化学成分波动的环境中的溶液运输和反应至关重要.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 地质化学 地质化学
背景情况:
- 水库系统经历了动态流动区域,其中水的混合与不同的化学成分影响溶液的行为.
- 要了解潮波动的河岸的排放,需要模拟复杂的流动模式.
研究的目的:
- 开发和测试一种新的可编程逆流1D (R1D) 实验柱装置.
- 研究在动态逆流条件下的水层中溶解物反应,吸收和运输.
主要方法:
- 使用一个Arduino微控制器和环静电来控制流量大小.
- 使用电磁来控制流动方向,并使用线式探针来持续监测废水特性 (电导率,pH,ORP,温度).
- 进行了恒定 (RCF) 和变量 (RVF) 大小的实验,逆转流程,以模拟自然水文图.
主要成果:
- 模拟的化物突破曲线在RCF和RVF流程下显示了几乎相同的分散性.
- 在RVF实验中的Peclet数有效地捕捉了扩散和分散主导的运输之间的转变.
- 该装置在短暂的,可变的流量条件下准确模拟了保守的混合.
结论:
- 开发的R1D装置有效地模拟了复杂的,短暂的流动模式下的环境相关的混合和溶液运输.
- 精确模拟可变流量逆流量对于研究流速与化学反应之间的相互作用至关重要,特别是当扩散在动力上受到限制时.
- 该装置为研究潮影响的沿海水层和类似环境中的溶液动力学提供了宝贵的工具.
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