In this paper a mathematical model is built for a buried hot crude oil pipeline during shutdown, and an unstructured grid and polar coordinate grid are respectively applied to generating grids for the soil region and the three layers in the pipe (wax layer, pipe wall, and corrosion-inhibiting coating). The governing equations are discretized using the finite volume method. The variations in temperatures of static oil and soil were investigated during pipeline shutdown in both summer and winter, in which some important parameters of the soil and crude oils of a Northeast pipeline are employed.
Bibliographical noteFunding Information:
The paper is supported by National High-tech R&D Program of China (No. 2006AA09Z357), the National Science Foundation of China (No. 50876114, No. 10602043), and the Program for New Century Excellent Talents in University (NCET-07-0843) and SRF for ROCS, SEM. This work is also financially supported by the State Key Laboratory of Multiphase Flow in Power Engineering (Xi’an Jiaotong University).
- Equivalent thermal conductivity
- Moving boundary
- Stagnation point
- Thermal influence region
- Unstructured grid
ASJC Scopus subject areas
- Fuel Technology
- Geotechnical Engineering and Engineering Geology
- Energy Engineering and Power Technology
- Geochemistry and Petrology
- Economic Geology