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基于量纲分析的湿气管道临界携液流速模型
A critical liquid-carrying flow rate model for wet gas pipelines based on dimensional analysis
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- DOI:
- 10.3969/j.issn.1001-2206.2026.02.006
- 作者:
- 林旭
- 作者单位:
- 中国石油华北油田分公司第一采油厂, 河北任丘 062550
- 关键词:
- 湿气管道; 临界携液流速; 量纲分析; Plackett-Burman; 扩展双流体模型
wet gas pipeline;critical liquid-carrying flow rate;dimensional analysis;Plackett-Burman;expanded two-fluid model
- 摘要:
- 为解决湿气管道临界携液流速模型关键参数获取难、工况适应性差等问题，基于扩展双流体模型和OLGA软件进行数值模拟，采用Plackett-Burman试验筛选影响临界携液流速的关键因素；结合量纲分析Buckingham π定理构建无量纲数群，引入二次多项式作为关联函数，建立工程版临界携液流速计算方法；最后通过数值模拟与现场实测数据联合验证模型的合理性。结果表明，管径、体积含水率和运行压力对临界携液流速的影响非常显著，上坡倾角、下坡倾角和上坡管长的影响显著；基于量纲分析所建模型的平均相对误差为6.23%，校正相关系数达0.921，优化调整流速后，现场凝液缸积液问题得到显著改善。研究结果可为湿气管道工程设计与运行参数优化提供理论依据。
To address the issues of difficulty in obtaining key parameters and poor adaptability to different operating conditions in the critical liquid-carrying flow rate model for wet gas pipelines, numerical simulations were conducted based on the extended two-fluid model and the OLGA software. The key factors affecting the critical liquid-carrying flow rate were screened using the Plackett-Burman experiment; the dimensionless groups were constructed based on the Buckingham π theorem, and a quadratic polynomial was introduced as the correlation function to establish an engineering version of the critical liquid-carrying flow rate calculation method. Finally, the rationality of the model was verified through the joint validation of numerical simulations and on-site measured data. The results show that the pipe diameter, volumetric water content, and operating pressure have a significant impact on the critical liquid-carrying flow rate, while the uphill inclination angle, downhill inclination angle, and uphill pipeline length have a significant impact. Based on the model constructed by dimensional analysis, the average relative error is 6.23%, and the corrected correlation coefficient reaches 0.921. After optimizing and adjusting the flow rate, the liquid accumulation problem in the on-site liquid collection tank has been significantly improved. The research results can provide a reliable theoretical basis for the engineering design and operation parameter optimization of wet gas pipelines.