摘要
在液体管道输送中,管内流动状态的监测对于管道运行具有重要的意义。基于管道模型,通过仿真方法研究了管内流动状态预测,并进一步研究了管道边界条件对仿真计算结果的影响。理论分析和仿真结果均表明:边界条件直接影响仿真的输出波形,并且会影响仿真的动态特性。对在线仿真而言,采用压力作为边界条件可以获得更快的响应速度,从而可以提高基于实时仿真方法的泄漏检测系统的响应速度。所得结论对基于实时模型的泄漏检测方法中边界条件的选择具有指导意义。
In the pipeline transportation of liquid, the flow parameters are essential for management and operation. Based on the physical model of pipeline, flow parameters prediction was studied by means of simulation. And several kinds of boundary conditions were also investigated. The results from both theoretical analysis and simulation showed that the boundary condition would determine the waveform of the model outputs and influence the dynamics of the simulation. It can be concluded that using the pressure measurements at both upstream and downstream would have a relatively shorter setting time for the online simulation which would ensure quicker response when leak detection system based on real-time simulation was adopted. This can be used as an aid for the selection of boundary condition of the leak detection method based on real-time simulation.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2008年第7期1625-1630,共6页
CIESC Journal
基金
国家高技术研究发展计划项目(2006AA04Z428)
国家自然科学基金项目(60574085
60736026)~~
关键词
管道
模型
边界条件
仿真
动态特性
pipeline
model
boundary conditions
simulation
dynamics
