摘要
基于真空排水管路输送模拟实验和气液两相流分相模型，建立了真空排水管网摩擦压力损失计算模型。此模型计算结果比传统计算模型更接近实验结果。在此基础上，探讨了最大收集半径问题，在地势平坦的条件下，真空排污管道系统理论上最大服务半径可达2800-4500m。在实际工程中管道因爬坡增加提升损失，收集半径会相应减小。
Based on the simulation experiment and separated flow mode, the model for the estimation of the multiphase frictional head loss in the vacuum drainpipe was deduced. The comparison of the results of the deduced formula with the experimental data in the paper and the results of the traditional formula for the frictional head loss of vacuum sewers was conducted. It was shown that the deduced formula was well available for predicting the frictional pressure drop for multiphase flow in vacuum pipelines. Finally, based on the formula of the frictional head loss established beforehand, the maximum collection radius of the vacuum sewer system was discussed and was thought to be 2 800- 4 500 m.
出处
《华中科技大学学报（城市科学版）》
CAS
2008年第1期28-31,共4页
Journal of Huazhong University of Science and Technology
基金
国家“十五”科技攻关项目(2002BA806B04-01B)
集美大学科研基金项目(CQ2007012)
关键词
真空排水系统
摩擦压力损失
模拟实验
分相流模型
最大收集半径
vacuum drainage system
frictional pressure loss
simulation experiment
separated flowmode
maximum collection radius
