摘要
热油管道再启动过程是一种不稳定的变物性耦合流动。建立了不稳定过程变物性耦合流动的数学模型,采用DTDMA算法对其进行求解。用编制的计算机程序模拟了不同流型管截面的耦合流动特性、截面不同位置的速度和温度随时间的变化趋势。模拟结果增强了对热油管道不稳定过程变物性耦合流动特性的认识。
Unstable coupled flow usually presents during the restarting process of a hot oil pipeline system as the physical properties of the hot oil vary with its temperature. Based on the laws of conservation of mass, momentum and energy, all of which were general for an unstable flow in pipeline, the governing equations for this unstable coupled flow were established. Distributed time division multiple auess （DTDMA） algorithm was then used to solve these equations. The unstable coupled flow was simulated under different flow regimes. So were the tendencies of the velocity and temperature development at different locations on the cross section of the pipe. These simulation results enhance the understanding of the unstable coupled flow of hot oil with variable physical properties.
出处
《管道技术与设备》
CAS
2006年第4期16-18,共3页
Pipeline Technique and Equipment
关键词
热油管道
不稳定过程
变物性
耦合流动
数值模拟
hot oil pipeline
unstable process
changed physical property
coupled flow
numerical analysis
