气流排除倾斜管道积水的理论分析

基金项目: 国家高性能计算基金资助项目(981006)

Theoretical Analysis of Using Airflow to Purge Residual Water in an Inclined Pipe

1.
Department of Mechanics and Engineering Science, Peking University, Beijing 100871, P R China;
2.
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, P R China;
3.
Shiraguri College, Tokyo, Japan

摘要: 运用作者推导的动量积分关系式,分析了向有积水的斜置管道中分别吹入轴向气流和螺旋气流时积水的运动情况。结果表明:在大多数情况下,螺旋气流能除去斜置管道中积水;而轴向气流不能除去积水,一段时间后会出现逆流。这一结果与Horii和赵耀华等人在这个问题上所做的实验结果一致。此外,还讨论了不同的初始条件对排水情况的影响。
- 螺旋流 /
- 轴向流 /
- 排水 /
- 两相流 /
- 管流
Abstract: A refined theoretical analysis for using the spiral airflow and axial airflow to purge residual water in an inclined pipe was presented.The computations reveal that,in most cases,the spiral flow can purge the residual water in the inclined pipe indeed while the axial flow may induce back flow of the water,just as predicted in the experiments presented by Horii and Zhao et al.In addition,the effects of various initial conditions on water purging were studied in detail for both the spiral and axial flow cases.
- spiral flow /
- axial flow /
- water purging /
- two-phase flow /
- pipe flow

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