西安理工大学学报2017，Vol.33Issue(1)：29-35,7.DOI:10.19322/j.cnki.issn.1006-4710.2017.01.006
管道输沙阻力损失规律的多相流数值模拟研究
Numerical simulation of multiphase flow on the law of resistance loss of pipeline transportation
摘要
Abstract
The law of resistance loss is closely related to the sediment transport characteristics of pipelines.The mixture model for multiphase flow was used in this paper,utilized the Xiaolangdi reservoir site pipeline pumping sand test parameters to study the pipeline resistance changes with sediment concentration and velocity of flow.The simulation results are compared with Fei Xiangjun,Durand and Chen Guangwen's resistance formula.Research shows that:①in various flow conditions,the pressure drop increases with the increasing sediment concentration;In the same concentration,the pressure loss is two times of linear increase with the growth of velocity.As for the unit weight,the resistance loss of different concentrations of mixed water sand under the same speed is basically the same.②In addition to the high sediment concentration and low flow rate,the simulation results deviate from the Durand resistance formula.In other cases,the numerical simulation results are in good agreement with those of Chen Guangwen,Fei Xiangjun and Durand resistance formula.③When the flow velocity is less than a certain degree(v=1 m/s),the simulation results show that the sediment transport rate is not conserved.It can be further by considering the actual situation and using the analysis of the sediment transport rate in the simulation to judge the silt velocity of the pipeline.关键词
数值模拟/管道输沙/阻力损失/混合模型Key words
numerical simulation/pipeline transportation/resistance loss/mixed model分类
建筑与水利引用本文复制引用
李珊珊,李国栋,张巧玲,秦毅..管道输沙阻力损失规律的多相流数值模拟研究[J].西安理工大学学报,2017,33(1):29-35,7.基金项目
国家自然科学基金资助项目(51579206) （51579206）
水利部公益性行业科研专项经费资助项目(201301063) （201301063）
陕西省自然科学基础研究计划资助项目(2015JM5201) （2015JM5201）
