在漏效应下的新型冷装置温度场的数值模拟
Ning Yang1,2, Xuyong Wang3, Jixun Ren4
1School of Architecture and Construction, Jiangsu Vocational Institute of Architectural Technology, Xuzhou, China.
PloS one
|May 16, 2024
概括
地下水透会影响地下冷强化. 更高的透率会造成更薄的冷墙,但最佳的透率可以形成密集的墙壁. 过度的透会阻止墙壁的形成.
科学领域:
- 地质技术工程 地质技术工程
- 土木工程 土木工程是指土木工程.
- 环境工程 环境工程
背景情况:
- 地下冷对于建筑和资源开采至关重要.
- 地下水透对冷土壤结构的热稳定性产生重大影响.
- 了解漏效应对于设计有效的冷增强系统至关重要.
研究的目的:
- 调查地下水透对新型冷增强系统温度场的影响.
- 分析不同透速度对冷墙壁的发展和完整性的影响.
- 为了确定成功结增强的关键透率.
主要方法:
- 使用COMSOL有限元软件进行数值模拟.
- 配合达西定律和热传递模块用于多孔介质.
- 模拟变化的水头来控制漏速度.
- 分析了温度场的发展和冷墙的形成.
主要成果:
- 漏降低了结壁的厚度,特别是在高头区域,其影响以更高的速度加剧.
- 漏在沿着流动方向的温度场上表现出时间滞后效应.
- 透率高于1.65m/d促进了更好的结,形成了密集的墙壁.
- 超过5.78 m/d的速度导致土壤温度升高,并且无法形成冰幕.
结论:
- 地下水透是影响地下结强化的一个关键因素.
- 最佳的透率是必要的,以形成有效和密集的冷墙.
- 过度透会对冷钢筋的完整性构成风险,可能导致故障.
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