化工学报 ›› 2016, Vol. 67 ›› Issue (12): 4969-4975.DOI: 10.11949/j.issn.0438-1157.20160034

• 流体力学与传递现象 • 上一篇    下一篇

水下管道向下泄漏的羽/射流特性

张军1, 臧晓刚1, 张园春2, 何宏舟1, 陈怀民1   

  1. 1 集美大学机械与能源工程学院, 福建省能源清洁利用与开发重点实验室, 福建 厦门 361021;
    2 长庆油田勘探开发研究院, 陕西 西安 710018
  • 收稿日期:2016-01-08 修回日期:2016-09-19 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: 张军(1966-),男,博士,副教授。bull0202@sina.com
  • 基金资助:

    福建省自然科学基金项目(2014J01201);福建省科技计划项目(2014H6019)。

Dynamic characteristics of plume/jet from underwater pipe downward leakage

ZHANG Jun1, ZANG Xiaogang1, ZHANG Yuanchun2, HE Hongzhou1, CHEN Huaimin1   

  1. 1 Fujian Province Key Laboratory of Energy Cleaning Utilization and Development, Jimei University, Xiamen 361021, Fujian, China;
    2 Research Institute of Changqing Oil Exploration & Development, Xi'an 710018, Shaanxi, China
  • Received:2016-01-08 Revised:2016-09-19 Online:2016-12-05 Published:2016-12-05
  • Supported by:

    supported by the Natural Science Foundation of Fujian Province(2014J01201) and the Fujian Provincial Science and Technology Project(2014H6019).

摘要:

对水下管道向下泄漏的羽流特性进行了实验及理论研究。采用拉格朗日控制体积分法建立了向下运动的羽动力模型,并对羽流参数进行了模拟。模拟结果表明模型对羽流半径及长度的预测与实验结果基本相符,但在接近羽流终端时,对羽流半径的预测结果要高于实验值。实验及模拟结果还表明,向下泄漏时羽流的初始动量衰减很快,与向上泄漏时羽流相比,羽流长度很短。随着Froude数的增大,向上羽流的长度增长较大,而向下羽流的长度却增长缓慢。

关键词: 水下管道, 向下泄漏, 羽流动力特性, 数值模拟, 实验研究

Abstract:

The plume dynamic characteristics from underwater pipe downward leakage are experimentally and theoretically investigated. The Lagrangian integral method is used to establish the dynamic model of downward plume. The model is numerically solved and the main plume parameters are obtained. The simulated results show that the simulated values in plume radius and length are generally consistent with the experimental values, but the simulated radius is higher than experiment value in area near plume terminal. The experimental and simulated results also show that for downward leakage the initial momentum of plume quickly decays and the plume length is very short compared with upward leakage. With increasing Froude number, the maximum length of upward plume rapidly grows while the maximum length of downward plume slowly grows.

Key words: underwater pipe, downward leakage, plume dynamic characteristics, numerical simulation, experimental investigation

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