热油管道非稳态工况传热与流动的耦合计算模型  

Heat transfer and flow coupling calculation model of transient scenario for hot oil pipeline

作　　者：崔慧[1] 吴长春[1] 

机构地区：[1]中国石油大学石油天然气工程学院,北京102249

出　　处：《石油大学学报（自然科学版）》2005年第3期101-105,共5页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：在进行热油管道工艺计算和运行工况分析时,通常将热力非稳态工况近似按稳态处理,这使得计算结果与实际情况偏差很大,不能客观地反映实际工况。在充分考虑管内油流热力、水力耦合以及管内油流与管外介质耦合的基础上,提出了一个比较完整的非稳态工况传热与流动双层耦合模型。采用双特征线法求解管内油流参数,用有限单元法求解管外土壤温度场,并编制了相应的计算程序。利用该模型和英国ESI公司的管道模拟软件TLNET分别对所建立的几种热油管道非稳态工况进行了模拟计算。结果表明,该模型比较合理,可用于热油管道非稳态工况的计算。Thermal transient scenarios were usually resolved approximately as the steady states in technical calculation and operational analysis of hot oil pipeline. However, there is great error between the calculation results and the real data. An integrated double-coupling mathematic model was presented. The model was based on the thermal-hydraulic coupling of crude oil in the pipeline and coupling of crude oil to medium around pipeline. Double-characteristic method was adopted to solve the parameters of crude oil. Finite element method was used to solve the soil temperature field. The relevant calculating software was programmed. The results compared with TLNET software show that the model is reasonable and can be applied to calculate transient scenarios for hot oil pipelines.

关 键 词：热油管道 油流热力 水力耦合 耦合计算模型 非稳态工况 

分 类 号：TE832.2[石油与天然气工程—油气储运工程]