低温重油管输温度模拟与管壁-重油界面温升特性分析

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大连海事大学学报 ›› 2025, Vol. 51 ›› Issue (4) : 123-132.

鲍永杰¹，刘欣怡¹，马宇薪¹，孙建锐²，王金龙^*1

作者信息 +

Simulation of temperature field and interfacial thermal response in sub-cooled oil pipeline heating systems

BAO Yongjie¹, LIU Xinyi¹, MA Yuxin¹, SUN Jianrui², WANG Jinlong^*1

Author information +

文章历史 +

摘要

明确深海高粘度重油加热工艺及热传导规律是提高重油回收效率的关键。以管路传输过程中重油加热为研究对象，采用数值模拟建立了高粘度重油在加热管道中的温度场模型，分析了不同加热传输距离、管径、管道加热温度及流速对管壁-重油界面区域（y/D<0.1）重油温度的影响规律。研究结果表明：管道加热条件为80 ℃的重油传输过程中，界面区域温升最为显著，管径增大使得界面处重油温度因受热表面积增加而增大，当重油雷诺数超过2300时流体由层流向湍流转变引起温升拐点（D≥151.66 mm），进一步增加了界面处重油与高温管道之间的对流换热；在给定工况条件下，当管路加热温度提升至140 ℃，有效传热系数由63.14 W/(m2·℃)增至134.24 W/(m2·℃)，有效传热系数增加52.96%，界面对流换热效应增强。

Abstract

Deep-sea heavy oil heating and viscosity reduction is key to improving recovery efficiency. Taking the heated oil flow in pipelines as the research object, a temperature field model of high-viscosity heavy oil in heating pipelines was established to analyze the influence of transmission distance, pipe diameter, heating temperature, and flow rate on the temperature rise of oil in the liquid/solid interface region (y/D < 0.1).Results demonstrate that an 80 °C pipe heating temperature yields the maximum interfacial temperature rise. Pipe diameter enlargement elevates interfacial oil temperature through increased heated surface area. A thermal inflection point emerges when the Reynolds number exceeds 2300 at pipe diameters of 151.66 mm, indicating aminar-to-turbulent flow transition that intensifies interfacial convective heat transfer. Under prescribed conditions, elevation of pipe heating temperature to 140 °C augments the effective heat transfer coefficient from 63.14 W/(m²·°C) to 134.24 W/(m²·°C), constituting a 52.96% increase that thereby enhances interfacial convective heat transfer effects.

导出引用

鲍永杰, 刘欣怡, 马宇薪, 孙建锐, 王金龙. 低温重油管输温度模拟与管壁-重油界面温升特性分析[J]. 大连海事大学学报. 2025, 51(4): 123-132

BAO Yongjie, LIU Xinyi, MA Yuxin, SUN Jianrui, WANG Jinlong. Simulation of temperature field and interfacial thermal response in sub-cooled oil pipeline heating systems[J]. Journal of Dalian Maritime University. 2025, 51(4): 123-132

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